Sunday, Mar 20, 2022 @ 8:00 AM
Registration closes: Sun, Mar 13 @ 11:59 PM

Hit the green register button above to sign up! Please visit our website for more info.

A trail running charity fundraiser dedicated to World Water Day.

Would you like to experience the gorgeous trails surrounding some of Marin County’s most pristine reservoirs, while simultaneously contributing towards alleviating the global water crisis? If so, we would love to have you as a part of the first ever Lag Bon 10K Race!

Our goal is to raise money and awareness of the need for access to clean and reliable drinking water through our shared passion for trail running. All ticket sales collected in excess of the cost of the event will go directly to the highly effective NGO, Evidence Action.

Where: Lake Lagunitas Picnic Grounds at end of Sky Oaks Road, Fairfax CA

When: Sunday, March 20th, 2020 – Run begins at 8:00 am

Course Info

The Lag Bon 10K is a moderately challenging and beautiful course. On this technical run you will encounter stairs, bridges, roots and rocks. Event will be held rain or shine so be prepared for cold, wet and muddy conditions as well. Start/Finish is at the Lagunitas picnic grounds parking lot. Aid stations/bathrooms will be after Bon Tempe Dam at the 3.5 mile point and at the Start/Finish. Although people of all abilities are encouraged to participate there will be a 2 hour limit to complete the course due to permit restrictions so a walking pace is not recommended. No dogs or strollers please.

Registration Fee

Early Registration Fee* – $50

Late Registration Fee* – February 13th to March 4th – $55

Last Minute Registration Fee (no shirt) - March 5th to March 15th - $55

*Includes event T-shirt

Space is limited to 75 runners to minimize environmental impact and race day registration is not available.

Packet pick up will be at the Novato Sports Basement on Saturday, March 19th from 11am to 2pm. If you are unable to pick up at this time and location please email

Local time: 7:12 PM
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