The Big Alta

100K · Marinwood, CA, US · 2027-03-20 · official site · registration

Course

Distance62.5 mi
Distance (metric)100.6 km“The 62.5 mile course packs in a laundry list of "greatest hits" scenic locations” source
Course typepoint-to-point“a world-class point-to-point 100K on Saturday” source
Elevation gain12,750 ft“Approximately 12,750' of ascent and 12,700' of descent.” source
Net elevation50 ft“Approximately 12,750' of ascent and 12,700' of descent.” source
Terrainmountain, coastal“the highest point in Marin County” source

Getting there

Nearest townMarinwood“Marinwood Community Center," "Marinwood, CA” source
StateCA“Marinwood, CA” source
CountryUS“Marinwood, CA” source
Race starts atFort Baker, Sausalito, CA“Race Start: 6:00AM sharp at Fort Baker (mass start, no waves, no announcements)” source
Nearest major airportSFO“SFO | San Francisco International Airport | large hub | 36.2” source
Driving distance to airport36.2 mi“"distance":58269” source

Race day

Date2027-03-20
Start time06:00
Entry fee$370
Aid stations9
Drop bagsyes
Runners400

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