The hardest Colorado campgrounds to book

Name: How fast Colorado campsite cancellations get re-booked
Creator: CampSage

The best Colorado campsites are “sold out” months out — but people cancel constantly. The real question isn’t whether a spot opens, it’s how long it lasts before someone else grabs it. We scan every Colorado campground on recreation.gov several times a day and log the check at which each site frees up — and the check at which it is gone again. Here’s what that reveals.

At Graham Creek Campground, half the cancellations we logged were already gone by the time we looked again — within 23.8 hrs. You have hours, not days.

⏱️ Fastest-vanishing cancellations

For half the openings we logged, the site was already re-booked by our next check — this is how long that took. Lower means you have to move faster.

#	Campground	Gone within	Openings measured
1	Graham Creek Campground	23.8 hrs	30
2	West Lake	23.8 hrs	31
3	Thirty Mile	23.8 hrs	21
4	Purgatoire Campground	23.8 hrs	28
5	North Canyon Campground	23.9 hrs	28
6	House Creek	23.9 hrs	25
7	Heaton Bay	23.9 hrs	46
8	Pawnee	23.9 hrs	26
9	Dowdy Lake	23.9 hrs	82
10	Prospector	23.9 hrs	23
11	Rocky Mountain National Park Glacier Basin Campground	24.0 hrs	35
12	Lawn Lake	24.0 hrs	34

🔄 Where cancellations happen most (best odds if you watch)

These Colorado parks turn over the most — set an alert and your chances are highest here.

#	Campground	Openings/week
1	Dowdy Lake	6.8
2	Rocky Mountain National Park Timber Creek Campground	5.5
3	Pinon Flats Campground	5.4
4	Bogan Flats Campground and Group	5.1
5	Oh Be Joyful Campground	5.1
6	Cayton Campground	5.1
7	Haviland Lake Campground	5.0
8	Redstone	4.9
9	Mavreeso Campground	4.8
10	Difficult Campground	4.8

Methodology. CampSage scans every Colorado campground on recreation.gov continuously and appends an event each time a site opens or fills. This ranking covers 59.3 days of continuous tracking since July 11, 2026 (7,206 matched open→re-booked events); it updates daily and gets more robust as the record grows. Parks shown have at least 20 measured openings, because a park with a handful ranks on noise rather than on demand. These figures are upper bounds, not stopwatch readings: we observe checks, not moments, and our checks are hours apart, so a site retaken ten minutes after it opened and one that lasted four hours can land in the same bucket. Read “gone within 4 hrs” as “already taken by the time we looked again.” The median is the middle value, so one unusually long-lived opening cannot skew it. Journalists / researchers: happy to share the underlying data or a longer window — about CampSage.

Want to catch one of these? Set a free alert on the live map → and we’ll email you the second a site opens.

Other regions. California · Ontario · Washington · British Columbia · Oregon

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