Big-Rig Friendly Campgrounds in Montana (Scored 1–10)
By Calvin Whitlock · Last updated July 7, 2026 · How we score
TL;DR: Montana is the opposite problem from Florida: length capacity is easy to find here — what decides the score is approach grade, fuel gaps between towns, and a short operating season. These 10 campgrounds score highest on the Big-Rig Standard™ — a uniform 1–10 score built from eight data points. Yellowstone Grizzly RV Park in West Yellowstone (9.5) leads with forty 80-foot paved pull-throughs three blocks from the park gate; Butte KOA (9.0) is the best interstate overnight at the I-90/I-15 junction; North American RV Park near Glacier (9.0) takes rigs to 100 feet; Osen's RV Park in Livingston (6.5) is the honest workable-with-planning pick for a Yellowstone north-entrance base.
Every campground below is scored the same way, on the same eight data points, so a 9 here means the same thing as a 9 in Florida or Texas. For what each data point means and how the score is calculated, see Big-Rig Friendly, Defined.
How to read the score: 9.0–10 = rolls right in · 7.0–8.5 = big-rig comfortable · 5.0–6.5 = workable with planning. Cells marked (inferred) are derived from terrain and road data, not published specs — confirm with the park and help us sharpen them via the correction link at the bottom.
The 10 highest-scoring big-rig campgrounds in Montana
1. Yellowstone Grizzly RV Park — West Yellowstone · Big-Rig Score: 9.5
The benchmark for big-rig camping at a national park gate. Forty premium 80-foot pull-through sites — plus 70- and 80-foot drive-throughs the park says "will accommodate the largest rigs" — with 20/30/50-amp, water, sewer, and cable at every site, three blocks from Yellowstone's west entrance on West Yellowstone's flat town grid. Arrive on US-20/US-191, park the rig for the week, and drive the toad into the park. Seasonal — confirm opening and closing dates before shoulder-season trips.
| Data point | Value |
|---|---|
| Max rig length | 80 ft pull-through (40 premium sites; 70–80 ft drive-throughs) |
| Turn radius / entry | Flat town-grid streets; wide interior roads (inferred — modern purpose-built layout) |
| Pull-through vs. back-in | Pull-through (70–80 ft) and back-in |
| Low-clearance warnings | None (inferred — open lodgepole layout; town approach) |
| Fuel within 10 mi | Diesel + propane in West Yellowstone (inferred — gateway-town services) |
| Grade on approach | Long climbs on US-191/US-20 into the plateau; town itself is flat (inferred — plan the drive, not the arrival) |
| Overnight allowed | Yes (seasonal — confirm dates) |
| Surface / power | Paved/level pads · 20/30/50-amp full hookups + cable |
210 S Electric St, West Yellowstone, MT 59758 · (406) 646-4466
2. Butte KOA Journey — Butte · Big-Rig Score: 9.0
The best interstate overnight in the state. Pull-throughs run to a published 90-foot max — directory listings put the ceiling at rigs up to 95 feet — with 50-amp, water, and sewer, one block off I-90 / I-15 at Exit 126. Fuel at the interchange, no backing, out in the morning. One planning note that outranks the campground itself: if you're continuing east, I-90 climbs Homestake Pass just out of town — check your brakes and the weather before you roll.
| Data point | Value |
|---|---|
| Max rig length | 90 ft pull-through (listings cite rigs to 95 ft) |
| Turn radius / entry | One block off the interstate exit; simple urban approach |
| Pull-through vs. back-in | Pull-through (majority) and back-in |
| Low-clearance warnings | None (inferred — open valley-floor layout) |
| Fuel within 10 mi | Diesel + propane — I-90/I-15 interchange services (inferred — strong) |
| Grade on approach | Park approach is flat; I-90 east of Butte climbs a mountain pass — plan the onward leg (inferred — caution) |
| Overnight allowed | Yes — ideal one-night stop |
| Surface / power | Level sites · 30/50-amp full hookups |
1601 Kaw Ave, Butte, MT 59701 (I-90/I-15 Exit 126) · (406) 782-8080
3. North American RV Park & Yurt Village — Coram · Big-Rig Score: 9.0
The length champion of the Glacier corridor: 108 full-hookup sites, max RV length 100 feet, 30/50-amp, on US-2 about 5.5 miles from Glacier National Park's west entrance. The park sits in the open Flathead Valley floor, so the approach avoids the mountain-grade problem that dogs most Glacier-area camping. Critical pairing note: Going-to-the-Sun Road bans vehicles over 21 feet — this is your basecamp, not your through-route.
| Data point | Value |
|---|---|
| Max rig length | 100 ft (published max) |
| Turn radius / entry | Straight US-2 highway approach; open layout (inferred — adequate) |
| Pull-through vs. back-in | Both available (inferred — confirm loop when booking) |
| Low-clearance warnings | None on approach (inferred — US-2 is the trucking route to the valley) |
| Fuel within 10 mi | Diesel + propane — Hungry Horse / Columbia Falls on US-2 (inferred) |
| Grade on approach | Gentle — valley floor; save the mountain driving for the toad |
| Overnight allowed | Yes (seasonal — confirm dates) |
| Surface / power | Full hookups · 30/50-amp |
10640 US Hwy 2 E, Coram, MT 59913 · (406) 387-5800
4. Billings KOA Holiday — Billings · Big-Rig Score: 8.5
The world's first KOA, on the Yellowstone River off I-90, and still one of Montana's most capable: pull-throughs range 35 to 80 feet, with 90 fifty-amp sites and a published 100-foot max RV length. Full-service city fuel and repairs minutes away — the best big-rig infrastructure town in eastern Montana. The knock, per repeat guests: site spacing runs tight in the older rows, so a 45-footer with dual slides should request a longer pull-through by number.
| Data point | Value |
|---|---|
| Max rig length | 100 ft max (pull-throughs 35–80 ft — request the long rows) |
| Turn radius / entry | Established riverside layout; spacing tight in places (guest reviews) |
| Pull-through vs. back-in | Pull-through (35–80 ft) and back-in |
| Low-clearance warnings | Mature cottonwoods on riverside rows — watch the roofline (inferred — caution) |
| Fuel within 10 mi | Diesel + propane — I-90 Billings corridor (inferred — strong) |
| Grade on approach | None — Yellowstone River valley floor |
| Overnight allowed | Yes — year-round listings |
| Surface / power | Level sites · 30/50-amp full hookups |
547 Garden Ave, Billings, MT 59101 · (406) 252-3104
5. Jim & Mary's RV Park — Missoula · Big-Rig Score: 8.5
Family-owned, flower-gardened, and genuinely big-rig capable: 42 pull-through sites, 80-foot max RV length, 30/50-amp full hookups, on US-93 just north of the I-90 interchange. The operational quirk to respect: the site you book is the site you keep — they don't shuffle arrivals — so book a 50-amp pull-through explicitly, not a back-in with hope. Season runs roughly April through September.
| Data point | Value |
|---|---|
| Max rig length | 80 ft (42 pull-throughs) |
| Turn radius / entry | US-93 highway frontage; straightforward (inferred — adequate) |
| Pull-through vs. back-in | 42 pull-through + back-in |
| Low-clearance warnings | Mature landscaping on interior rows (inferred — caution) |
| Fuel within 10 mi | Diesel + propane — US-93 / I-90 Missoula corridor (inferred — strong) |
| Grade on approach | None — valley floor |
| Overnight allowed | Yes (seasonal, ~April–September; book the exact site you need) |
| Surface / power | Full hookups · 30/50-amp |
9800 US Hwy 93 N, Missoula, MT 59808 · (406) 549-4416
6. Dick's RV Park — Great Falls · Big-Rig Score: 8.0
The central-Montana workhorse: 61 pull-throughs, most pads 70 feet, 20/30/50-amp full hookups, minutes from the I-15/US-87 junction in Great Falls. Not a destination resort — it's an in-town park — but for a big rig crossing the Hi-Line or running the I-15 corridor to Glacier or Canada, it's the reliable full-hookup stop in a 150-mile radius, with city fuel and RV service close.
| Data point | Value |
|---|---|
| Max rig length | 70 ft pull-through pads (most of 61 pull-throughs) |
| Turn radius / entry | City-street approach; manageable (inferred — confirm route off I-15) |
| Pull-through vs. back-in | 61 pull-through + back-in |
| Low-clearance warnings | None flagged (inferred — urban lot layout) |
| Fuel within 10 mi | Diesel + propane — I-15 / US-87 Great Falls corridor (inferred — strong) |
| Grade on approach | None — Missouri River bench |
| Overnight allowed | Yes |
| Surface / power | Full hookups · 20/30/50-amp |
1403 11th St SW, Great Falls, MT 59404 · (406) 452-0333
7. Yellowstone's Edge RV Park — Paradise Valley (Emigrant) · Big-Rig Score: 8.0
A mile of private Yellowstone River frontage on US-89, halfway between Livingston and the park's north entrance. Pull-throughs run 44 to 70 feet long and 32 feet wide — that width is the sleeper spec, giving dual-slide rigs real breathing room — with 30/50-amp full hookups. US-89 through Paradise Valley is a legitimate big-rig road: two lanes, gentle river grade, no passes. Riverfront rows book out; reserve early for summer.
| Data point | Value |
|---|---|
| Max rig length | 70 ft pull-through (44–70 ft × 32 ft wide) |
| Turn radius / entry | Direct US-89 highway entrance (inferred — adequate) |
| Pull-through vs. back-in | Pull-through (44–70 ft) and back-in |
| Low-clearance warnings | None (inferred — open riverside layout) |
| Fuel within 10 mi | Limited mid-valley; full diesel + propane in Livingston (~17 mi) — top off before US-89 south (inferred — plan ahead) |
| Grade on approach | Gentle river grade on US-89; no passes between Livingston and the park |
| Overnight allowed | Yes (seasonal — confirm dates) |
| Surface / power | Full hookups · 30/50-amp |
3502 US Hwy 89 S, Livingston, MT 59047 (Paradise Valley, mile marker ~44) · (406) 333-4036
8. Polson Motorcoach & RV Resort — Polson (Flathead Lake) · Big-Rig Score: 8.0
Montana's luxury Class-A resort: 61 widely spaced full-hookup sites with paved roads and landscaped patios overlooking Flathead Lake, listed as a Big-Rigs-RV "Best Bet." The score would run higher on pure geometry, but stay flexibility caps it: the resort is built for Class A coaches 30 feet or longer, 10 years old or newer — fifth wheels and older rigs should book elsewhere on this list. Open roughly April 15 – October 15.
| Data point | Value |
|---|---|
| Max rig length | 45 ft Class A comfortably (inferred — motorcoach-resort design, 61 wide sites on 25 acres) |
| Turn radius / entry | Paved interior roads, wide spacing; bluff-top entrance off Irvine Flats Rd — take the marked approach (inferred — caution on first arrival) |
| Pull-through vs. back-in | Both; premium patio sites (inferred — confirm site class) |
| Low-clearance warnings | None (inferred — open bluff layout) |
| Fuel within 10 mi | Diesel + propane — Polson / US-93 (inferred) |
| Grade on approach | Short climb from US-93 to the bluff (inferred — caution, verify with resort) |
| Overnight allowed | Yes — Class A only, 30 ft+, 10-year rule; April 15 – Oct 15 |
| Surface / power | Paved/landscaped · 50-amp full hookups |
200 Irvine Flats Rd, Polson, MT 59860 · (406) 883-2333
9. West Glacier KOA Resort — West Glacier · Big-Rig Score: 7.5
The full-amenity Glacier option: Pull-Thru Deluxe Patio sites with 50/30/20-amp full hookups, level pads "with plenty of room for slide-outs," pool, and restaurant, about 2.5 miles from the park's west entrance. Guests report 40-foot Class A + towed Jeep fitting without drama. It scores below North American RV Park on raw length ceiling and on the wooded resort loops — pick this one for the amenities, that one for the biggest rigs.
| Data point | Value |
|---|---|
| Max rig length | 40–45 ft on deluxe pull-throughs (inferred — guest-reported 40 ft + toad fits; confirm 45 ft when booking) |
| Turn radius / entry | Paved resort roads; wooded loops tighter than open-field parks (inferred — caution) |
| Pull-through vs. back-in | Pull-through deluxe and back-in |
| Low-clearance warnings | Tree canopy on interior loops — watch the roofline (inferred — caution) |
| Fuel within 10 mi | Diesel + propane — West Glacier / Hungry Horse on US-2 (inferred) |
| Grade on approach | Short local grade off US-2 (inferred — manageable; valley-floor highway approach) |
| Overnight allowed | Yes (seasonal — confirm dates) |
| Surface / power | Level pads · 50/30/20-amp full hookups |
355 Half Moon Flats Rd, West Glacier, MT 59936 · (406) 387-5341
10. Osen's RV Park by Starry Night Lodging — Livingston · Big-Rig Score: 6.5
The honest workable-with-planning pick. 17 pull-throughs and 24 full-hookup sites in town at Livingston, right where I-90 meets US-89 — the natural staging point for Yellowstone's north entrance when Paradise Valley is booked out. It's a compact in-town park, not a resort: rows are tighter than anything above, and Livingston's famous wind funnels through the Yellowstone River gap here, so plan your awning and your backing accordingly. Call ahead, request a pull-through by number, and it works fine for a 40-footer.
| Data point | Value |
|---|---|
| Max rig length | 40 ft realistic on pull-throughs (inferred — compact in-town lot; call to confirm for 45 ft) |
| Turn radius / entry | In-town streets; tighter rows (inferred — caution) |
| Pull-through vs. back-in | 17 pull-through; remainder back-in |
| Low-clearance warnings | None flagged (inferred — open lot; check street trees on approach) |
| Fuel within 10 mi | Diesel + propane — I-90 Livingston exits (inferred — strong) |
| Grade on approach | None in town; high wind zone — Livingston gusts are a real handling factor on I-90 |
| Overnight allowed | Yes |
| Surface / power | Full hookups (24 sites) · confirm 50-amp on the specific site (inferred) |
20 Merrill Ln, Livingston, MT 59047 · (406) 222-0591
How we scored these
Every campground is scored on the Big-Rig Standard™: a weighted 1–10 composite of length capacity (30%), site type & power (20%), maneuverability (20%), clearance & grade (15%), fuel & services within 10 mi (10%), and stay flexibility (5%).
Montana flips the Florida math. Length is abundant — five parks on this list publish 80-foot-plus capacity — so the separators are approach grade, fuel gaps between towns, seasonal operation, and wind. Most Montana parks close October through April; every "seasonal" flag above means confirm dates before a shoulder-season booking. Pull-through lengths, site counts, amp service, and hookups are sourced from park listings and campground directories (July 2026). Fuel proximity, clearance, and grade are inferred from terrain and the surrounding road network and are marked (inferred) in each table. If you've stayed at one of these and the data's off, the Submit a correction link below feeds straight into the next update.
How this list was made: We screened Montana RV parks for published big-rig specs (pull-through length, 50-amp full hookups, max rig length), scored each on the six-factor Big-Rig Standard™, and cross-checked maneuvering notes against guest reviews on Campendium, RV LIFE, Good Sam, and Tripadvisor. Research and drafting were AI-assisted and human-reviewed. We have not personally stayed at every park on this list — where a score rests on inference rather than a published spec or a guest report, the cell is marked (inferred), and safety-relevant fields (clearance, grade) are kept conservative. No park paid for placement or for its score.
Sources
- Park specifications: official listings for Yellowstone Grizzly RV Park, Butte KOA Journey, North American RV Park & Yurt Village, Billings KOA Holiday, Jim & Mary's RV Park, Dick's RV Park, Yellowstone's Edge RV Park, Polson Motorcoach & RV Resort, West Glacier KOA Resort, and Osen's RV Park by Starry Night Lodging (accessed July 2026).
- Maneuvering / spacing notes: guest reviews on Campendium, RV LIFE Campground Reviews, Good Sam, and Tripadvisor (accessed July 2026).
- Vehicle-size limits for Going-to-the-Sun Road: National Park Service, Glacier National Park (21 ft length / 10 ft width restriction).
Verification status (last verified July 7, 2026): Name, address, and phone confirmed via web for all 10 parks (verified Jul 2026). Pull-through lengths for Yellowstone Grizzly (80 ft), Butte KOA (90 ft max), North American (100 ft max), Billings KOA (35–80 ft), Jim & Mary's (80 ft max), Dick's (70 ft pads), and Yellowstone's Edge (44–70 ft × 32 ft) come from published listings. Fuel within 10 mi was not individually walked for any park — all fuel cells remain (inferred) from corridor networks. Coram's postal code is the town's single ZIP. Per-listing GPS coordinates and low-clearance/Street-View checks are pending and will be confirmed during the directory build.
Frequently asked questions
What is the most big-rig friendly campground in Montana?
By the Big-Rig Standard™, Yellowstone Grizzly RV Park in West Yellowstone (9.5) — forty 80-foot paved pull-through sites with 50-amp full hookups on a flat town grid, three blocks from Yellowstone's west entrance.
Can I drive a 40-foot motorhome through Glacier National Park?
No — Going-to-the-Sun Road prohibits vehicles over 21 feet long or 10 feet wide. The big-rig play is to base at North American RV Park in Coram (9.0, 100-ft max) or West Glacier KOA (7.5) and drive the alpine road in a toad or on the park shuttle.
Which Montana campground is best for a one-night interstate stop?
Butte KOA Journey (9.0) — 90-foot max pull-throughs with 50-amp full hookups one block off the I-90/I-15 junction at Exit 126. Fuel at the interchange, no backing, and you're positioned for either interstate in the morning. Billings KOA (8.5) is the eastern-Montana equivalent off I-90.
Are Montana RV parks open in winter?
Most close roughly October through April — Jim & Mary's runs about April–September, Polson Motorcoach April 15–October 15, and the Yellowstone and Glacier gateway parks are seasonal. Billings KOA and the in-town parks (Dick's in Great Falls, Osen's in Livingston) are your most likely cold-season options, but confirm dates and winterized hookups with the park before any October–April booking.
Do Montana mountain passes matter when choosing a campground?
Yes — more than the campground itself in some cases. I-90 crosses a mountain pass east of Butte, US-191 and US-20 climb into West Yellowstone, and Livingston's wind gap is a known handling hazard for high-profile rigs. Every listing above flags approach grade in its data table; plan fuel and brakes around the drive between parks, not just the arrival.
Compare across the directory: Big-Rig Friendly Restaurants in Montana (with RV parking) · Big-Rig Friendly Stops Along I-90 (the interstate that carries Butte, Billings, Missoula, and Livingston on this list) · Big-Rig Friendly Stops Along I-80 (the main east–west corridor one state south) · What "Big-Rig Friendly" means
[ Submit a correction → ] Stayed at one of these? Tell us what the data got wrong and we'll update the score.