Dinosaur National Monument · Utah
Overview Rainbow Park Campground is 28 miles (45 km) from the Quarry Visitor Center in the Utah portion of Dinosaur National Monument. It is located on a rugged dirt road that is impassable when wet. The campground sits beside the Green River near the Rainbow Park Boat Ramp at the head of Split Mountain Canyon.
Sites at Rainbow Park Campground are reserved through Recreation.gov. Sites here can be reserved in advance through the official system, and they are claimed fast — cancellations then trickle back all season, unannounced, at any hour of the day or night.
| Total sites | 5 |
|---|---|
| Site types | Tent only |
| Location | Jensen, UT |
| Book through | Recreation.gov |
| Official listing | Recreation.gov |
Because sites are booked months ahead, a steady share of reservations get cancelled as trips fall through. Each cancellation instantly returns that site and those nights to the official calendar — first-come, first-served, no waitlist, no announcement. Refreshing the booking page yourself, every few minutes for weeks, works in theory. In practice, the people who get these sites are the ones who hear about the opening first.
ItOpened scans the Recreation.gov calendar for Rainbow Park Campground around the clock. When a site matching your dates and your vehicle opens, you get a text with a direct link to it. You book it yourself, in your own account, at the normal price. We never book, hold, or resell — your fee pays for monitoring, and openings are first-come, so speed is the whole game.
| Green River Campground | Cancellation alerts available |
|---|---|
| Echo Park Campground | Cancellation alerts available |
| Gates of Lodore Campground | Cancellation alerts available |
| Deerlodge Park Campground | Cancellation alerts available |
| Split Mountain Group Campground | Cancellation alerts available |
Page data refreshed 2026-10-29. Site facts come from the official directory listing for Rainbow Park Campground; cancellation statistics come from our own scanning logs.