Also known as: Old Mailbox, New Mailbox
A brutally steep trail in the Middle Fork Snoqualmie valley that has become a Seattle-area fitness test. The old trail gains nearly 4,000 feet in under 3 miles of relentless climbing. A newer, slightly gentler route was added in 2014. A classic mailbox sits on the summit, stuffed with trail register books and random items left by climbers.
Mailbox Peak has been a local fitness benchmark for Seattle-area hikers and trail runners for decades. The old trail is one of the steepest maintained trails in the state. The summit mailbox tradition began in the 1960s and is maintained by volunteers.