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Gary Giacomini Open Space Preserve Trails & Conditions

Gary Giacomini Open Space Preserve is a mountain bike trail network in the Marin & Mount Tamalpais area, with 11 featured trails tracked here for daily conditions, the 7-day outlook, and the best time to ride.

6 featured trails elevation 344–1,060 ft in Marin & Mount Tamalpais

Is Gary Giacomini Open Space Preserve rideable right now?

Right now about 6 of 6 Gary Giacomini Open Space Preserve trails are riding well. Conditions change daily with rain, so the list below shows the live read for each trail, and the chart shows which day ahead is your best bet.

Gary Giacomini Open Space Preserve conditions at a glancesnapshot · Aug 14

Live conditions map
© OpenStreetMap
Open the live map →
Riding right now
6 of 6 trails riding well
Dusty / loose 6
Air quality
Good
EPA AirNow (observed) + CAMS forecast. Informational.
Next 9 days
Trails riding well each day · blue dot = rain
6Today6Sat6Sun6Mon6Tue6Wed6Thu6Fri6Sat
Most trails are riding well and should hold through the week.
Temperature this week
Lower trails95–820 ft
50°typical 55°–69°F75°
High country1,847–1,847 ft
48°typical 51°–65°F69°
40°60°80°
Trail soil & drainage
Loam 83%Clay 17%
Mostly loam, which drains at a moderate pace.
See the live map & forecastEvery trail's live read · best time to ride · 10-day outlook→
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Trails & current conditions

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Gary Giacomini Open Space Preserve FAQ

When will Gary Giacomini Open Space Preserve dry out?

It depends on recent rain and the soil. The 10-day outlook on this page shows how many Gary Giacomini Open Space Preserve trails are expected to be riding well each day, with rain markers, so you can pick the right day. See the 10-day outlook →

How many mountain bike trails are in Gary Giacomini Open Space Preserve?

Gary Giacomini Open Space Preserve has 6 featured mountain bike trails tracked here for conditions. It's part of the Marin & Mount Tamalpais riding area in California.

Where is Gary Giacomini Open Space Preserve?

Gary Giacomini Open Space Preserve is a mountain bike trail network in the Marin & Mount Tamalpais area of California, running from about 344–1,060 ft. Open the live map for trailheads, GPX, and today's conditions on each trail. Open the live map →

Is Gary Giacomini Open Space Preserve too muddy to ride after rain?

Gary Giacomini Open Space Preserve is mostly loam soil, which drains at a moderate pace. After a storm some trails firm up within a day while others stay greasy, so the live read above shows which are rideable before you drive out. Check the live conditions →

What is the best day this week to ride Gary Giacomini Open Space Preserve?

Based on the 10-day outlook, Friday looks best, with about 6 of 6 Gary Giacomini Open Space Preserve trails expected to ride well. The outlook chart above shows the full 10 days so you can time your ride.

More Marin & Mount Tamalpais trail networks

All Marin & Mount Tamalpais trails → · California conditions →