RV travel in Wyoming
Wyoming is one of the most iconic RV states in the country: Yellowstone, Grand Teton, Devils Tower, the Bighorns, and Flaming Gorge in one state. It's also the least-populated state in the Lower 48, which means empty roads and serious distances between services. Two real planning constraints dominate Wyoming RV travel: wind, which routinely closes I-80 between Laramie and Rawlins to high-profile vehicles for hours or days at a time, and the Yellowstone/Teton reservation system, which now books out 6-12 months ahead for peak summer. Plan around both and Wyoming delivers some of the best big-sky RV trips you can do in the West. The shoulder seasons (May, September) are the sweet spot before everything closes for winter.
Last verified: 14 May 2026
Free RV PDF guide to Wyoming
Driving rules, RV-friendly and RV-restricted highways, NPS reservation rules, BLM and NF boondocking, propane, dump stations, weather, and emergency contacts. Save it to your phone for offline use on the road.
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Driving rules
Interstate (cars)80 mph (rural I-80 / I-25 stretches; 75 mph elsewhere)
Interstate (trucks + towing)70 mph
US/State highway (cars)70 mph
US/State highway (towing)65 mph
Built-up areas25-35 mph (posted)
Drive onRight
RV passenger seatbeltsRequired for front-seat occupants; under-18s in all seats
Cell phone use while drivingTexting banned statewide; some cities ban hand-held (Cheyenne, Laramie). Stay hands-free.
RV-friendly and RV-restricted highways
RV-friendly
I-80Cheyenne west across the southern tier to Utah. Big-rig standard but the most wind-affected interstate in the country. Watch wyoroad.info wind closures (closures to "light/empty" or "high-profile" vehicles happen on dozens of days/year).
I-25Cheyenne north to Buffalo, Sheridan, and on to Montana. Wind-exposed but less so than I-80.
I-90Buffalo east through Sheridan and Gillette to South Dakota. Standard interstate.
US-26 / US-287Jackson southeast through Dubois and on toward Lander/Casper. Togwotee Pass (9,658 ft) is the only sustained climb -- open year-round but chains in heavy snow.
US-191Jackson north into Yellowstone (south entrance) and through Pinedale south to I-80. Easy.
US-14 / US-14A / US-16 (Bighorn crossings)Three routes across the Bighorns; all three are scenic mountain passes. US-14A has the steepest grades.
US-30 / WY-789Rawlins north to Lander and on to the Wind River. Standard.
RV-restricted
Grand Teton Inner Park Loop & access roadsAntelope Flats and some pullouts have 30-ft vehicle limits. The road to Jenny Lake is RV-accessible but tight at the visitor center.
Yellowstone Beartooth approach (US-212)10,947 ft; switchbacks. Open late May to mid-October. Legal for big rigs but not pleasant for fifth wheels.
Chief Joseph Scenic Byway (WY-296)8,000+ ft; switchbacks. Closed in winter. Rigs over 35 ft tough.
Mirror Lake Highway approach (WY-150)Crosses into Utah; high-elevation, closed Nov-May.
South Pass City / Atlantic City spur (WY-28 access)Dirt access roads to historic mining camps; not for big rigs.
National parks and monuments
Yellowstone NP$35/vehicle (7 days), $80 America the Beautiful annual. 12 campgrounds; 5 reservable via recreation.gov (Madison, Canyon, Bridge Bay, Grant, Fishing Bridge RV) all booking 6+ months out. Fishing Bridge is the only hookup campground (50/30A) and books fastest. Others first-come; arrive by 0800 in summer. Bear-safe food storage strictly enforced.
Grand Teton NP$35/vehicle (7 days). 6 campgrounds; Colter Bay and Gros Ventre reservable, others first-come. Headwaters at Flagg Ranch and Colter Bay RV Park (concessioner) have hookups. Wildlife (bears, moose, bison) are routinely on campground roads -- give them 100 yards.
Devils Tower NM$25/vehicle (7 days). Belle Fourche Campground reservable May-Sep; RVs to 35 ft. Climbers' camping closer to the tower; RV-friendly. Stunning at sunrise.
Fort Laramie NHSFree entry. Day-use only; nearest RV in Guernsey State Park or Torrington.
Fossil Butte NMFree entry. Day-use only; nearest RV in Kemmerer.
Bighorn Canyon NRA (Wyoming portion)Free entry; camping $15-30. Horseshoe Bend (MT side) and Barry's Landing reachable from Lovell. Mostly accessed from Montana.
Boondocking and dispersed camping
BLM: Wyoming is roughly 50% federal land and BLM dominates the basins between mountain ranges -- the Red Desert, Bridger Basin, Bighorn Basin, and large stretches around Pinedale and Rock Springs. Free 14-day dispersed camping is the default outside developed recreation areas. The Killpecker Sand Dunes (NW of Rock Springs) is a popular free boondock. Carry water -- the basins are dry.
National Forests: Bridger-Teton, Shoshone, Bighorn, Medicine Bow-Routt, and Black Hills National Forests cover the mountain ranges. Free dispersed camping along forest roads; 14-day limit. Popular FR areas around Jackson (Bridger-Teton) fill summer weekends and many are increasingly restricted -- check Jackson Ranger District for current dispersed-camping closures. Fire restrictions Jul-Sep most years.
Stay limit: typically 14 days per location.
Service stops
Propane: Reliable in Cheyenne, Casper, Laramie, Rock Springs, Sheridan, Gillette, Jackson, Cody, and along I-80/I-25. Sparse in the Red Desert (Rawlins is the last reliable westbound; nothing dependable for 100+ miles), the Wind River Reservation (limited stops in Riverton and Lander), and the western Bighorns. U-Haul reliable; many small-town hardware and ranch supply stores do refills.
Dump stations: Wyoming state parks all have free dumps for paid guests. Flying J / Pilot stops along I-80 and I-25 charge $10-15. Jackson, Cody, Sheridan, and Cheyenne have multiple commercial options. Most Yellowstone-gateway campgrounds in West Yellowstone (MT) and Cody dump for guests.
Fuel: Diesel widely available along interstates. Long gaps to watch: I-80 Rawlins to Rock Springs (105 miles, multiple stations but wind-closure trap); US-26/287 Jackson to Dubois (60 miles over Togwotee, last reliable before WY-Wind River corridor); US-14 over the Bighorns (Greybull/Lovell to Sheridan is 100+ miles); WY-789/US-287 between Rawlins and Lander (90+ miles). Wyoming fuel taxes among the lowest in the country -- fill before crossing into Colorado or Idaho. Carry an extra 5 gallons for non-interstate routes.
Weather windows
Best monthsMid-June through mid-September for the mountains. Daytime highs 70-85 F in summer; nights drop to 30-50 F at elevation even in July. May and September are the shoulder windows -- cold nights but much less crowded.
Avoid monthsOctober through May for anything over 7,000 ft. Yellowstone interior roads close in November and reopen in stages through May (only the north loop and the route Mammoth-Cooke City stays open year-round, and only Mammoth-Tower in winter). Wyoming wind closures on I-80 happen any month but are worst Nov-Mar.
Wyoming wind closures are the single biggest planning constraint. WYDOT closes I-80 to "light, high-profile" vehicles regularly between Laramie and Rawlins; closures to ALL traffic happen during ground blizzards Nov-Mar. Sign up for wyoroad.info alerts. A 40-ft RV with a slide is high-profile. Don't try to outrun a closure warning -- WYDOT will detour you off the interstate at the next exit.
Emergency and road conditions
State patrolDial *HP (*47) from a cell phone for Wyoming Highway Patrol non-emergency