The 30 percent of Cadillac Summit Road daytime vehicle reservations released at 10 a.m. ET, 90 days before the reservation date.
Acadia's own reservation page says vehicle reservations are required for Cadillac Summit Road from Wed May 20 through Sun Oct 25, 2026, cost $6, and are sold only on Recreation.gov — not at the park. 30 percent of each day's reservations go on sale at 10 a.m. ET 90 days ahead and the other 70 percent at 10 a.m. ET two days ahead. We watch for both releases and alert the moment they open.
Updated , checked by hand against the target's own page.
Watched from nps.gov, the target's own public page — not a reservation system we poll.