10K races near Napa

Cindy's Race is a running event in Santa Rosa, California, held at 630 Summerfield Rd in Sonoma County. It offers in-person 10 mile, 10K, 6K, and a free kids' 1K. The race takes place in October and also provides virtual options for the same distances, allowing participation remotely. The race supports breast cancer awareness and fundraising, honoring Cindy, who was diagnosed with breast cancer. The event accommodates various participants, including long-distance runners, 10K and 6K runners, families with children, and those participating virtually. The free kids' dash ensures the shortest race is accessible to all.

The Bay Front Run begins and ends on Bayfront Boulevard in Hercules, California, adjacent to the Bay Front Trail. This yearly community race offers a 5K, 10K, 1 Mile Run/Walk, and a Kids Fun Run. The main races commence in the morning, with children’s races scheduled for later. The 5K and 10K are chip-timed and scored, while the shorter distances accommodate walkers, families, and young children. The course proceeds from Sanderling and Bayfront along Bayfront Boulevard to the Bay Trail entrance at John Muir Parkway. It then follows the trail through Hercules towards Rodeo before a turnaround at the Bay Trail's terminus. The 10K covers this course twice. The event benefits the Hercules Education Foundation. Following the run, the Bay Front Festival features music, food trucks, local businesses, entertainment, and community organizations. Participants registering early receive a race shirt, the first 350 finishers get a medal, and top male and female runners in the 5K and 10K receive awards.

The Reservoir Dogs Trail Run is an October trail race held at San Pablo Reservoir, located near Orinda in the East Bay. All race distances commence and conclude at the San Pablo Reservoir Visitor Center. Participants can select from 5K, 10K, half marathon, or 35K distances. The event has a participant cap of approximately 300 individuals across all races. Inside Trail Racing organizes this event. The longer distances feature a 6.5-hour time limit, maintaining the structure of a genuine trail race as opposed to a casual reservoir run. The course's distinctive feature is its complete circuit around Briones Reservoir using EBMUD trails, incorporating segments typically accessible only with permits. Expect a mix of moderately technical dirt paths, open fire roads, undulating hills, wooded single-track, winding single and double-track sections, exposed ridgelines, and expansive vistas of the watershed. The 10K, half marathon, and 35K races involve less elevation gain compared to many other Inside Trail events, allowing for faster times while still providing road runners with a true trail challenge. Aid stations are equipped with gels, trail mix, salty snacks, fruit, Coke, and Stroopwafels; however, participants must carry their own water between stations. Finishers receive a tech shirt and a medal, age-group victors are awarded trophies, and one participant receives the unique "Dead Last Finisher" award. Notably, dogs are prohibited despite the race's name.

The Winters Spooktacular Fun Run and Costume Contest starts and finishes at Rotary Park on Main Street in Winters, California. This Halloween-season run/walk is hosted by the Winters Runners and Walkers Club Charity as part of the three-day Winters Harvest Festival. It includes a 10K, a 5K, and a 1 Mile Kids Monster Dash and adult run/walk. The 10K starts first, the 5K follows, and the 1 Mile event goes later, allowing for both timed runners and families with children. All routes stay within the city of Winters, making this a local town event. The 5K and 10K are timed, with place awards for the top three men and women in each distance. The 1 Mile is untimed. Finishers receive race bibs, custom tech tees, and medals. 5K and 10K finishers also receive free Hooby's Beverages. Costumes are part of every race, with awards for Best Individual and Best Group in each event. Proceeds support outdoor fitness equipment for Winters Walnut Park, donated to the City of Winters.

Boundary Bay is a late-fall race series held at Boundary Bay Park, Centennial Beach in Delta, British Columbia, offering 5K, 10K, half marathon, marathon, and 4-person marathon relay distances. The marathon is presented as a final opportunity for runners aiming for a Boston qualifying time, featuring a straightforward course: a completely flat gravel oceanside trail with no elevation gain. All distances follow an out-and-back route along British Columbia's southern coast, allowing participants to run beside Boundary Bay instead of through city streets. The course offers views across the Salish Sea towards the San Juan Islands, with migratory birds present and ocean weather as the primary variable. The race supports Ronald McDonald House BC & Yukon. Organizers acknowledge the late-season timing by advising runners to dress warmly, bring dry clothes, and appreciate the clock-change weekend that may provide an extra hour of sleep.

The Reindeer Run/Walk is an annual holiday race in American Canyon, California, held in early December. It features a 5K run/walk and a 10K run. Pre-race festivities begin at 8 a.m., with the 10K starting first, followed by the 5K runners, and then the 5K walkers. This event is designed for a wide audience, welcoming walkers, families, children, and runners of all abilities. The event embraces the holiday spirit, particularly for younger participants. Children aged 5 and under receive a finisher’s medal and souvenir antlers, with separate youth pricing for ages 6 to 17. Registration opens with an early-bird period in June. As race fees are non-refundable, unused portions are donated to ACParks. Organizers also promote the race at American Canyon’s Meet Me in the Street community fair, held on the second Wednesday of each month from June through September. Attendees can play games, win prizes, and gather information about the run before the race season begins.

The Beer City Half Santa Rosa begins at A Place to Play in Santa Rosa, California, offering a half marathon, 10K, 5K, and 1-mile Beer Stroll on the same morning. The event centers on running and local beer, with finishers receiving a shirt, a Key to Beer City medal, a custom tasting glass, and unlimited tastings until noon from Santa Rosa and Sonoma County brewers. The longer races follow the Santa Rosa Creek, showcasing a less-traveled section of the city, while the Beer Stroll remains near A Place to Play. Following the main races, the Beat the Beast Beer Mile challenges runners against a Beer City Beast; if caught, the runner is eliminated. The afternoon continues at Moonlight Brewing with the Shindig, featuring music by School of Rock Santa Rosa, food trucks, games, and a first beer included with entry. The Beermazing Race introduces a pub-challenge element, sending teams to visit five brewers between early and late afternoon, with limited capacity noted by organizers as a reason for potential sell-outs.

Victory begins at the historic Craneway Pavilion in Richmond, California, sending runners onto the Richmond Bay Trail along San Francisco Bay. The series includes a half marathon, 10k, and 5k, allowing participants to select anything from a short bayfront run to a longer, flat road course. The courses are flat and fast, suitable for beginners and those aiming for a personal record. The route follows the San Francisco Bay Trail, offering open views across the bay toward the Golden Gate Bridge, the Bay Bridge, and Mt. Tamalpais. The race name references Richmond’s World War II home front history, when hundreds of ships, including Victory ships, were built in the area, and the nearby Ford assembly plant shifted from car production to military vehicles. Runners can also combine this with the Breeze to Victory race for the B2V Double, receiving a combined “mega medal” with a special middle piece for completing both events.

Diablo Trails Challenge starts and finishes at Castle Rock Recreation Area in Diablo Foothills Regional Park in Walnut Creek, with Mount Diablo as the main playground. Brazen Racing hosts the trail-running series, which offers a 5K, 10K, half marathon, and 50K, so the same event can suit a first trail race or a long day out for experienced ultra-runners. All races are professionally timed, finishers receive medals, and the event is part of the Ultra Half Series. The longer routes reach well beyond Castle Rock, linking parkland such as Round Valley, Los Vaqueros Watershed, Morgan Territory, Mount Diablo State Park, and Shell Ridge Open Space before returning to the start area. The half marathon is listed as a 13.5-miler and includes hill climbing, quick descents, and runnable rolling sections. The race also serves a local conservation purpose: it raises money for Save Mount Diablo, with part of every entry fee going to the group. Save Mount Diablo has spent more than 50 years preserving and expanding open space around the mountain, helping grow protected land from 6,788 acres to more than 120,000 acres.