Mount Tamalpais · Marin County, California
81 trails.
How many have you run?
Every named singletrack on Tam — 103 miles of it. Any order, any pace, as many outings as it takes. Connect Strava and we'll check your history for you.
Read-only access. Your progress is worked out in your browser and visible only to you.
81
named trails
103.4
miles of singletrack
11
trailhead areas
0
fire roads. They don't count.
How it works
01
Connect Strava
One tap, read-only. No forms, no uploads, no spreadsheet.
02
See what's left
We match every run, hike and walk you've logged on Tam against the 81 trails. Most regulars are already partway there.
03
Plan the next outing
Remaining trails grouped by trailhead. Come back after a run and the count goes down.
The story
30 runs.
357 days.
All 81.
In January 2019 Brian Biggs set out to run every trail on Tam. It took most of a year, a few wrong turns, and one headlamp season.
Read the story →What counts
Counts
- Named singletrack on Tam proper — Middle Peak, East Peak and its flanks
- Each trail covered end to end, on foot, in any order
- Historic Mill Valley local trails: Zig-Zag, Tenderfoot, Cypress
Doesn't count
- Fire roads
- Anything north of Kent, Alpine, Bon Tempe and Phoenix reservoirs
- Anything south of Hwy 1
- Neighborhood connector trails (Maytag)
The details are on Rules & FAQ.