Day one in Acadia National Park kicks off with a coastal alpine feel—either a sunrise summit on Cadillac Mountain or an adrenaline-filled climb on the iron rungs of Precipice Trail. For a slightly shorter but still thrilling option, tackle the Beehive Trail, combining steep scrambles with sweeping ocean views. Whichever route you choose, it’s a high-energy start—exposure, elevation, and classic Maine coastline scenery.