5K races near Pacifica

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.

Coffee enthusiasts! This Coffee Lovers Run is about good vibes. No timing chips, just a stress-free setting to achieve your goals. Your swag, including a medal and shirt, ships direct to your address. Log miles after the race and we'll donate $1 for every mile you do.

The Donut Fun Run is a timed, donut-themed 5k at Alameda Point, starting from the Seaplane Lagoon Promenade. It is open to all ages and abilities, accommodating families, casual walkers, first-time 5k runners, and people who still want an official time. The race is in its fourth annual edition, with the setup favoring a community morning and a finish-line party over a competitive racing event. After the 5k, participants enter a Finish Line Festival centered on donuts and local vendors. The festival features a donut eating contest, donuts from Donut Petit, live music, food and beverage booths, Bay Area craft vendors, a health and wellness expo, and beer and wine for guests over 21. A specific local highlight is The Dancing Donuts, a group from Alameda's Dance/10 studio, performing at the festival and available for photos.

Half Moon Bay Pumpkin Run sends runners onto the Coastal Trail with a pumpkin waiting for them at the end. It is a race weekend event in Half Moon Bay, California, tied to the Annual Art & Pumpkin Festival, with a Kid's Fun Run, 5K, 10K, and half marathon based around Hatch Elementary School and the Pacific-side trail. Senior Coastsiders hosts it, and the proceeds support programs for local older adults. The route follows coastal paths overlooking the ocean, with rolling but generally fast, flat terrain that works for beginners, fun runners, and people chasing a personal best. The half marathon starts early and has a 3.5-hour cutoff, while the 5K and longer races include chip timing and finisher medals unless runners opt out. The festival side adds the Great Pumpkin Parade, live music, pie-eating contests, costume contests, giant pumpkin displays, and free admission on historic Main Street in the self-styled World Pumpkin Capital.

The San Mateo Rotary hosts a Halloween-themed 5K and 10K run on flat paved paths in Seal Point Park, San Mateo. Both distances utilize the park setting near 1901 J Hart Clinton Drive. The event includes kid-focused activities alongside the main runs, such as a 50-yard dash where children receive medals. Runners also receive a goody bag, and the event features raffle prizes, giving it the feel of a local community run rather than a competitive road race.

The USS Hornet Halloween 5k is a 6:30 PM run held during the Halloween season at the USS Hornet Museum in Alameda. It begins after sunset, requiring participants to bring headlamps; lights will also be placed along the course. Costumes are encouraged, and the race supports the museum. The course is a flat loop around Alameda Point, beginning and ending at the pier. It runs along the estuary shoreline, passes Spirit Alley, and offers views across the bay toward San Francisco. Post-race activities include a beer garden, food, music, and age-group awards. Parking is available at the Hornet and around Alameda Point.

The PB&J Fuel Run 5K/10K/13.1 SAN FRANCISCO is a running event in San Francisco offering 5K, 10K, and half marathon distances. Organized by The Best Races, its peanut butter and jelly theme lends a playful tone rather than intense race-day focus. The event features a relaxed atmosphere. Participants are encouraged to "spread the fun" and approach the day with "no stress, no expectations," running at their own pace. While specific route details are not provided, the race emphasizes feel-good miles, a satisfying finish, and the concept of running your own way.

The Halloween Trick or Trot Run is a Halloween road race held at Crissy Field in San Francisco. Participants can select a 1 Mile, 5K, 10K, or half marathon, accommodating those seeking a brief, enjoyable run and those targeting 13.1 miles. The race takes place in San Francisco County, within the Bay Area. The start is located at Crissy Field, and the course map is emailed to participants. The Halloween theme is integral to the event; participants are encouraged to bring a friend, set a goal, and receive free Halloween candy post-run.

The Golden Gate Half Marathon & 5K is a Sunday race in San Francisco with the bridge at the center of the day. Runners choose between a half marathon and a 5K, with the shorter distance open to both runners and walkers and aimed at a wide range of abilities. The half marathon crosses the Golden Gate Bridge twice, giving runners long looks at the bay, Alcatraz, and San Francisco from one of the city’s most famous landmarks. The event draws runners from around the world, uses the hashtag #RunTheBridge, and is tied to the Bay Area running community as much as to the bridge itself.