Distance
5.4 miles roundtrip
Trail Guide
Mailbox Peak Old Trail
5.4 mi roundtrip · 4,000 ft gain · Hard · Mailbox Peak
Trail Stats
Elevation Gain
4,000 ft
Highest Point
4,841 ft
Trailhead Elevation
900 ft
Difficulty
Hard
Trail Type
Out And Back
Features
Steep conditioning
Mountain views
Summit mailbox
Technical Notes
Extremely steep and relentless — one of the hardest day hikes near Seattle. Not an official trail: unmaintained, loose rocks, exposed roots, vertical scramble sections near the summit. Popular as a conditioning hike. Bring trekking poles. Trail is slippery when wet. No switchbacks — goes straight up.
Getting There
Trailhead
Mailbox Peak Trailhead
SE Middle Fork Rd, North Bend, WA
Parking: ~30 spaces
From Seattle
38 mi · 45 min drive
I-90 East to Exit 34 (468th Ave SE). Turn left at the stop sign onto SE Middle Fork Rd. Follow for ~2.5 miles to the trailhead parking area on the right.
Planning Details
Best Season
May through November
Dogs Allowed
Yes
Required Pass
Discover Pass
Annual: $35.00 · Day: $11.50
Mountain
Mailbox Peak · 4,841 ft · Snoqualmie Region
Avalanche Forecast
Check current avalanche conditions for the Mailbox Peak zone before your trip.
Ready to plan?
Get a full trip report with weather, gear, logistics, and an event draft.