A Cadillac Mountain reservation is required to drive to the summit for sunrise and throughout the day during Acadia's busy season, so planning ahead is essential. Cadillac is the highest peak on the U.S. Atlantic coast and one of the first spots in the country to catch the sunrise, which is exactly why the park manages traffic with timed vehicle reservations. This guide explains how the system works and how to secure a spot.
What is a Cadillac Mountain reservation?
It is a timed vehicle reservation that lets you drive the Cadillac Summit Road during the reservation season. It applies to the vehicle, not each person, and is separate from your park entrance pass. The system was introduced to ease congestion and protect the fragile summit environment. Learn more in our Acadia National Park guide and our Maine travel overview.
When do you need a reservation?
Reservations are typically required from late spring through fall, roughly May through October, during daytime hours and for the coveted sunrise window. Outside the reservation season, the road is generally first come, first served or closed for winter. Because the exact dates shift each year, always confirm the current-year reservation season before planning your visit.
How to book a Cadillac Mountain reservation
Reservations are sold through the federal recreation booking site in two batches: a block released well in advance for the season, and a rolling batch released a couple of days ahead. Create an account early, know your desired date and time, and be ready the moment reservations drop, since sunrise slots vanish within minutes. Confirm the current-year release schedule before you book.
How much does it cost?
The reservation carries a small per-vehicle booking fee on top of your Acadia entrance pass. It is inexpensive, but nonrefundable if you miss your window, so choose your date carefully. Prices can change year to year, so verify the current-year fee when you reserve.
Tips for getting a sunrise reservation
Set a reminder for the exact release time, log in a few minutes early, and have alternate dates ready in case your first choice sells out. The rolling two-day-ahead release is a great backup if you missed the main block or your plans firmed up late. Weekdays and shoulder-season dates are far easier to snag than peak-summer weekends.
Where to stay for an early start
Because sunrise slots begin before dawn, staying close to the park makes a huge difference. Bar Harbor is the most convenient base, just minutes from the Cadillac entrance, while nearby towns like Northeast Harbor and Trenton offer quieter lodging. Reserve rooms months ahead for summer and fall, when the whole region books up for leaf season and sunrise chasers.
What if you cannot get a reservation?
You can still hike to the summit on the North Ridge or South Ridge trails without any vehicle reservation, or ride the Island Explorer shuttle to other stunning viewpoints. For sunrise without the summit, spots like Sand Beach and Otter Cliff also face east. See our companion guide to the best hikes in Acadia for trail options.
FAQ
Do you need a reservation to hike Cadillac Mountain?
No. The reservation only applies to driving the Summit Road. Hiking up the North or South Ridge trails requires no vehicle reservation, just your park pass.
How far in advance can you book?
A large block opens well ahead of the season, with additional slots released about two days in advance. Confirm the current-year release dates on the official booking site.
Is the Cadillac Mountain reservation the same as park entry?
No. You still need a valid Acadia entrance pass in addition to the vehicle reservation. The two are purchased separately.
What happens if it is cloudy at sunrise?
Reservations are nonrefundable regardless of weather, and sunrises are unpredictable. Consider a flexible mindset, and remember the summit is spectacular in daylight too.