Campground · CO
Rocky Mountain National Park Aspenglen Campground
CO · Rocky Mountain National Park
Booking is hardest here in June (5/10) and easiest in April (1/10). Pick a month below for the full breakdown.
Booking difficulty by month
Midweek tip: in the busiest month (June), arrivals are lightest on Tuesday — shift your dates to improve your odds.
When reservations open
Booking window
Reservations open on a rolling 6-month window at 7:00 AM America/New York.
For example, sites for January 15, 2027 become bookable on July 15, 2026. Set a reminder a few minutes before release for the best shot.
Standard Recreation.gov 6-month rolling window: sites become bookable 6 months before arrival at 7:00 AM ET.
Sites & amenities
- 15 tent-only sites
- 54 RV sites
- 3 accessible sites
- Max RV length 30 ft
Activities: FISHING, CAMPING, AMPHITHEATER, ACCESSIBLE SWIMMING, BACKPACKING, BIKING, CANOEING, EVENING PROGRAMS, GUIDED INTERPRETIVE WALKS, KAYAKING, WILDLIFE VIEWING, MOUNTAIN CLIMBING, INTERPRETIVE PROGRAMS, PICNICKING, RANGER STATION, SKIING, SNOWSHOEING, WILDERNESS, DAY USE AREA, VISITOR CENTER, HORSEBACK RIDING, HIKING, SCENIC DRIVE