Trail Running calendar near Lake Sonoma 2025-2026

Enjoy a trail running weekend in San Francisco and the Marin Headlands with routes over the Golden Gate Bridge. As the final stop of the Spartan Trail World Championship, this end of season event offers scenic coastal challenges.

Run Krampus Cross Country in San Francisco live on Dec 7 or virtually Dec 5 to 8 with 5K 10K and the Naughty Nine Miler. All entrants get a wooden woodallion a Krampus tee and a beer sampler stein plus a brewfest on Dec 5.

Peacock Gap Trail Run offers three scenic trail distances through China Camp and Harry Barbier parks near San Rafael. Expect technical singletrack, big views and well stocked aid stations; bring your own bottle or reusable cup for this cupl..

Run the iconic Hunter S. Thompson Fear & Loathing in San Francisco on December 7, a free grassroots single loop that winds past city landmarks and finishes at Twin Peaks. Choose 50 mile or 50K distances and help support Shoes For Runners.

Run a scenic, challenging loop around Angel Island with sweeping views of the Golden Gate, Alcatraz and San Francisco. Choose the half marathon or 10K and ride the chartered ferry to this intimate 400 runner event.

Run scenic coastal trails in the Marin Headlands at the Golden Gate Trail Run in Sausalito offering distances from 8K to 50K plus a kids dash. Expect rugged views, stocked aid stations and finisher medals for all.

Experience panoramic Bay views on the hilly trails of Angel Island with 5, 10, and 15 mile options and a free kids dash. Finishers earn custom medals and pre registered runners receive shirts; a charter ferry from Tiburon is required.

Tackle scenic trails at China Camp State Park in March 2026 with in person or virtual 5K, 10K, and a challenging half marathon. All entrants receive a beer sampler stein, event shirt, and handcrafted woodallion.

Challenge yourself on classic Marin trails with towering redwoods, coastal ridges and sweeping bay views starting at Rodeo Beach. Choose a 50 mile or 50K route over technical single track and fire roads for a true Bay Area ultrarunning expe..

Three days of scenic trail running in Marin County with routes summiting Loma Alta and Big Rock Ridge and sweeping Bay Area views. Choose from 28K, 50K or a point to point 100K for a well supported race weekend.

Experience scenic single track trails through Bothe Napa Valley State Park with marathon, half marathon and 10K options. Limited to 300 runners, this hilly, creek lined route showcases vineyard country and rewards finishers with medals and..

Run the Lag Bon 10K on March 22 in Fairfax on a scenic, technical Lagunitas trail with roots, rocks and muddy sections. This small charity race supports World Water Day with proceeds to safe water programs and runners get a shirt and medal.

Run with sweeping views of the Golden Gate Bridge, San Francisco Bay and Pacific Ocean on scenic trails in the Marin Headlands. Choose Marathon, Half Marathon or 10K on April 4, 2026 in a 400 runner field for an intimate coastal challenge.

Run Angel Island on a scenic hilly loop with sweeping Golden Gate, Alcatraz and Bay views. Choose a 10K or a half that circles the island twice at the 35th annual event limited to 400 runners, ferry included.

Run scenic, challenging trails at Lake Sonoma Recreation Area with 100K, 50K and the women only Trail Sisters Half. The 100K is a Western States qualifier and courses feature big climbs, lake views and hearty aid stations.

Tackle the trails of Napa Valley at the Napa Valley Endurance Run in scenic Calistoga with options from 10K to 50K on rugged singletrack and fire roads. Finishers get a custom medal and shirt, with aid stations and awards.

Run the Mendocino Coast 50K for a scenic trail challenge along Northern California's rugged Pacific shoreline. Start at Big River State Beach and finish above Mendocino Village while crossing rivers, redwood groves and ocean bluffs.

Run scenic trails around Annadel State Park in a community fundraiser with a half marathon, 10K and 5K. Celebrate Earth Day with cup free aid stations and help support Trione Annadel State Park and Sonoma County Parks Foundation.

Run the scenic 38th Mt Tam Wild Boar at Mt Tamalpais State Park on April 25 2026, choose the half marathon or 10K, and enjoy coastal ridge views and single track trails. Field limited to 300 so register early.

Tackle the iconic Miwok 100K through the Marin Headlands on May 2, 2026, where redwoods, ridgelines, and coastal views await. Limited to 400 runners, this supported trail ultramarathon blends rugged challenge with community and sustainabili..