RV, camper and motorhome trip planning toolbox – The best ever created
Embark on an epic three-week journey that loops through the heart of the American West. This extensive route offers a perfect blend of prehistoric discoveries, geothermal wonders, and high-altitude adventures.
| Start & End Point | Denver, Colorado (Roundtrip) |
| Total Distance | 2,931 mi |
| Recommended Duration | 21 Days |
| States Explored | Colorado, Idaho, Montana, Nebraska, South Dakota, Utah, Wyoming |
| Ideal Traveler | Families, history buffs, and outdoor enthusiasts seeking a comprehensive western adventure |
| Best Season | Late Spring to Early Fall (Summer is peak for mountain accessibility) |
Denver is one of the premier RV hubs in the United States, offering excellent rental fleets and easy access to multiple interstate highways. This 2,931 mi loop is a masterclass in slow travel, allowing you to traverse seven distinct states without feeling rushed. Because it is a roundtrip, travelers avoid complex drop-off logistics and one-way fees, making it a highly efficient way to experience a massive swath of the country. From the sprawling plains to the towering Rockies, an RV provides the perfect mobile basecamp for a trip that shifts dramatically in elevation and scenery.
To truly enjoy a trip of this magnitude, pacing is everything. Rather than rushing from point to point, this route is designed in regional stages that let you settle into the local landscape. For the complete day-by-day itinerary and specific campground pairings, consult the full plan on RV PLANET.
Your journey begins by heading out of the Colorado mountains and into the sweeping plains of Nebraska and South Dakota. This leg is characterized by wide-open driving and fascinating historical deep-dives. You will transition from modern rail yards to ancient fossil beds, enjoying a relaxed driving pace as you acclimate to your RV.
As you move through South Dakota and into Wyoming, the elevation climbs and the landscapes become more dramatic. This stage focuses on iconic national memorials and the rugged beauty of the Black Hills and beyond. The driving distances are manageable, allowing plenty of time for wildlife watching and heritage tours.
Crossing into the heart of Wyoming and Montana, the route shifts to natural phenomena. You will navigate through areas famous for active geysers and soothing hot springs. The pacing here encourages long, lingering stops to hike, relax in thermal waters, and take in the expansive northern skies.
The final leg guides you south through Idaho and Utah before returning to Colorado. You will trade volcanic features for botanical gardens, high desert canyons, and eventually, alpine sailing. This stage offers a beautiful, scenic wind-down as you make your way back to Denver.
This itinerary is packed with more than 20 diverse destinations. While the full list is available inside RV PLANET, here are the core themes you will experience along the way:
We strongly recommend dedicating the full 21 days to this journey. Covering 2,931 mi across seven states requires a steady pace. Three weeks allows you to drive comfortably, enjoy extended stops at major attractions, and incorporate necessary rest days.
Absolutely. This is a quintessential American road trip. It combines education (science sites and museums), recreation (water parks, kayaking, hiking), and world-famous natural features into a single, cohesive loop.
This route is a dream for families, wildlife enthusiasts, and anyone fascinated by history and geology. The mix of amusement parks, zoos, and traditional markets ensures there is something to capture the interest of travelers of all ages.
Late spring through early fall is ideal. Summer provides the best access to high-elevation mountain passes and water-based activities like sailing and tubing. Be aware that some northern sections in Montana and Wyoming may experience snow early in the fall or late in the spring.
When booking your RV for a 2,931 mi trip, mileage is a crucial factor. Because this is a long-distance journey, standard mileage allowances (often 100 miles per day) will likely be exceeded. When reviewing your rental options, look for unlimited mileage packages or pre-purchase extra miles to secure the best value. Furthermore, since this is a roundtrip starting and ending in Denver, you will not have to worry about one-way drop fees, leaving more room in your budget for attractions and campground upgrades. Check the live pricing tool below for current rates on Class C motorhomes and family-friendly travel trailers.
The Grand Dinosaur route offers a lifetime of memories packed into three incredible weeks. From prehistoric fossils to the peaks of the Rockies, this is the ultimate way to experience the West. Review the detailed day-by-day itinerary and secure your vehicle by visiting RV PLANET today.
See the full polyline, drag stops to customize, and get live pricing in one click.
Open this route in RV PLAN →| Nearby RV rental stations | Cruise America- 26-E (Denver (DEN area)), Native Campervans-24 E (Denver (DEN area)), Indie Campers USA - 26 E (Denver (DEN area)), Britz USA-25/26-E (Denver (DEN area)), El Monte-2026-E (Denver (DEN area)) |
|---|---|
| Sample RV cost — 4 travelers (Class A / B / C) | {{BANDANA_PRICING_TABLE}} |
| Estimated fuel cost (total) | $950–$1,200 |
| Estimated campground cost (total) | $1,000–$1,500 |
| Estimated attractions & entrance fees — family of 4 | $350–$650 |
| Estimated groceries / self-catered food — family of 4 | $1,800–$2,400 |
| Live availability & pricing | Check live availability & pricing on Rent Motorhome → |
Estimate assumptions: Estimates assume a Class C motorhome averaging 10 mpg, a mix of state park and private campground stays at $60/night, and summer travel rates. All figures are estimates — verify on Rent Motorhome and RV PLAN for your travel dates.
A high-level look at how the route flows in stages. The exact daily stops, overnight picks, and detour options are built for you inside RV PLAN — open the route to see the full plan.
A relaxed drive out of Colorado into Nebraska and South Dakota, focusing on historical digs and iconic national memorials.
Venturing through the Black Hills of South Dakota and into Wyoming to experience rugged landscapes and deep heritage.
Navigating Wyoming and Montana to witness active geothermal features, abundant wildlife, and soothing natural hot springs.
Dropping southward through Idaho and Utah to explore expansive botanical gardens before returning to the Colorado Rockies for a scenic conclusion.
Total cost for this 21-day itinerary depends on the rig you pick, the pickup season, mileage add-ons, and any one-way drop-off fee across the 2,931 mi route. Check live availability and a real quote for the Denver → Denver pickup window on Rent Motorhome.
Live availability & pricing for this exact route
Prices update daily. See the full breakdown — nightly rate, taxes, one-way fee, mileage package — for your travel dates.
These are real vehicles in our Denver pickup fleet that fit a multi-week western U.S. itinerary. Configure dates on rvplan.net to see live availability and the total trip cost for the exact rig you want.
| Motorhome | Class | Sleeps | Length | Transmission |
|---|---|---|---|---|
| Comfort Space Select Indie Campers USA - 26 E |
Class A - Integrated | 8 | 29.2 ft | Auto Transmission |
| Family Sleeper (FS) El Monte-2026-E |
Class C - Alcove | 7 | 31.8 ft | Auto Transmission |
| R 29-31 Road Bear RV-26 E |
Class C - Alcove | 7 | 30.8 ft | Auto Transmission |
| Comfort Standard Select Indie Campers USA - 26 E |
Class C - Alcove | 7 | 24.1 ft | Auto Transmission |
| C-30 Cruise America- 26-E |
Class C - Alcove | 7 | 29.9 ft | Auto Transmission |
Pick your dates below and we'll open the live RV PLANET booking flow for the Denver → Denver route.
Picking up in Denver but want a shorter loop or a different destination? Compare these RV PLANET itineraries that depart from the same depot: