If you’re planning a trip to Rocky Mountain National Park between late spring and mid-October, there’s a step that catches a lot of people off guard. On top of the regular entrance fee or park pass, the park also requires a timed entry reservation during the busiest months. Show up without one and you can be turned away at the gate, even if you’ve already driven up from Denver.
Do I actually need one?
For 2026, a timed entry reservation is required to enter the park from May 22 through mid-October. This isn’t the entrance fee itself, it’s a separate reservation that controls how many vehicles come through the gates during the busiest part of the day. The requirement applies during specific hours rather than all day long, so if your plans have you arriving outside that window, you may not need a reservation at all. The exact hours have shifted a bit from year to year, so check the current window on the park’s website close to your visit date.
Timed Entry or Timed Entry Plus Bear Lake Road?
There are two versions of the reservation. A standard Timed Entry reservation gets you into the park, but not into the Bear Lake Road corridor, which is the area with some of the most popular trailheads, including Bear Lake and Emerald Lake. If your plans include that area, you need the Timed Entry Plus Bear Lake Road version instead. If you’re not sure yet what your day looks like, booking the Bear Lake Road version is the safer call, since it covers the rest of the park too.
When do reservations open?
Reservations are released in batches, not all at once. For 2026, reservations covering May 22 through June 30 opened on May 1 at 8 a.m. Mountain time, and reservations for October 1 through 18 are scheduled to open on September 1 at 8 a.m. Mountain time. For dates outside those windows, a smaller batch is released the evening before, at 7 p.m. Mountain time, on a first-come, first-served basis. That last-minute release genuinely helps if you didn’t plan ahead, but it’s also competitive, so don’t treat it as your only backup.
How much does it actually cost?
The reservation itself is $2, which is the Recreation.gov processing fee. That’s separate from the park’s entrance fee or your annual pass, both of which still apply on top of the reservation.
What do I need to show at the gate?
Once you book, you’ll get a confirmation email with your reservation details. Bring that with you, either printed or as a screenshot, since cell service near the entrance stations isn’t reliable enough to count on pulling it up on the spot.
What if I can’t get a reservation for the day I want?
A few things help here. Booking the moment the relevant release window opens gives you the best shot at popular dates, especially weekends. Checking the 7 p.m. next-day release is worth doing even if earlier dates look sold out. And if your trip is flexible, visiting outside the May 22 to mid-October window, or planning your time in the park around the hours outside the reservation requirement, both sidestep the system entirely.
The timed entry system feels like an extra hurdle when you’re already juggling flights, hotels, and everything else for a Colorado trip, but it’s a quick step once you know it’s coming. If your trip is built around the aspens turning color in October, that’s one more reason to handle this early, since that release window tends to go fast.