When in January are most 10K races held?
The busiest weekend in California is January 16 and January 17, with 14 of them. Another 8 fall on a weekday, which is worth knowing if you are traveling for one.
Race calendar · January 2027 · California
10K Races in California in January 2027
Every 10K in California in January 2027, all 53 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.
What the field actually runs
January 10K Races, By the Numbers
1:04:45Median finish time
38:51Median winning time
110Median field size
22January 10K races with published results
How we calculate these stats: RunSesh calculates these figures from the most recent published results of past editions, sourced from RunSignup. We show aggregates only: field size, winning and median times, and the cutoff. We never publish individual finisher tables. Last updated Nov 12, 2026.
When in January
The January Race Weekends
10K races are not spread evenly across January. Here is how the calendar actually falls, weekend by weekend, which is the part worth knowing before you book a trip or plan a taper around one.
By the numbers
The Biggest and Longest-Running
The January 10K races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
California 10K Races by City in January
All 10K Runs in California in January
53 total Fri, Jan 1, 2027Run In The New Year 5k/10K/Half Marathon Huntington Beach, CAFrom $48Details Fri, Jan 1, 2027Resolve2Run Grass Valley, CAFrom $30Details Fri, Jan 1, 2027Auburn Resolution Run Auburn, CAFrom $52Details Fri, Jan 1, 2027Brazen New Year's Day Castro Valley, CAFrom $82Details Fri, Jan 1, 2027New Year's Day Dash - 5K, 10K, 10-Miler, Half Marathon Long Beach, CAFrom $29Details Fri, Jan 1, 2027Santa Barbara Running Association Resolution Run Santa Barbara, CAFrom $50Details Fri, Jan 1, 2027Brazen New Year's Eve Castro Valley, CAFrom $82Details Sat, Jan 2, 20279th Annual KIWANIS RESOLUTION 5K Run/Walk, and 10K Run/Walk Mountain View, CAFrom $50Details Sat, Jan 2, 2027LASAA Mug Run - LASD Marina del Rey Station Marina Del Rey, CARegistration closedFrom $30Details Sat, Jan 2, 2027Run Into 2027 Nipomo, CAFrom $60Details Sun, Jan 3, 2027Sycamore Island 5k & 10k Run/Walk Madera, CAFrom $45Details Sun, Jan 3, 2027The Running Chicken 2027 10K/5K Fun Run & Walk Santa Margarita, CAFrom $51Details Sun, Jan 3, 2027The Coffee Cruise - 5K, 10K, 10-Miler, Half Marathon Long Beach, CAFrom $29Details Sat, Jan 9, 2027Fog Run Bakersfield, CAFrom $45Details Sat, Jan 9, 2027Citrus Heritage Run Riverside, CAFrom $70Details Sat, Jan 9, 2027Grievances & Gratitude Run - New Year Reset 5K 10K Half Marathon Long Beach, CAFrom $49Details Sun, Jan 10, 2027The Cookie Classic - 5K, 10K, 10-Miler, Half Marathon Long Beach, CAFrom $29Details Sun, Jan 10, 20272027 Altadena Forever Run Altadena, CAFrom $70Details Sat, Jan 16, 2027Rio Bravo Rumble 5k/10k Bakersfield, CAFrom $50Details Sat, Jan 16, 2027LASAA Mug Run - LASD Industry Station City of Industry, CAFrom $30Details Sat, Jan 16, 2027Coffee Run Fresno, CAFrom $38Details Sat, Jan 16, 2027The Bagel Run - 5K, 10K, 10-Miler, Half Marathon Long Beach, CAFrom $29Details Sat, Jan 16, 2027Cabrillo Beach 5K San Pedro, CAFrom $55Details Sat, Jan 16, 2027Define Your Glow - New Year Reset 5K, 10K, Half Marathon Long Beach, CAFrom $52Details Sat, Jan 16, 2027MLK Jr. Freedom Run 5K/10K/13.1 LOS ANGELES Los Angeles, CAFrom $42Register Sat, Jan 16, 2027MLK Jr. Freedom Run 5K/10K/13.1 SACRAMENTO Sacramento, CAFrom $42Register Sat, Jan 16, 2027MLK Jr. Freedom Run 5K/10K/13.1 SAN DIEGO San Diego, CAFrom $42Register Sat, Jan 16, 2027MLK Jr. Freedom Run 5K/10K/13.1 SAN FRANCISCO San Francisco, CAFrom $42Register Sat, Jan 16, 2027Sunrise Marathon 5K/10K/13.1 LOS ANGELES Los Angeles, CAFrom $42Register Sat, Jan 16, 2027Sunrise Marathon 5K/10K/13.1 SACRAMENTO Sacramento, CAFrom $42Register Sat, Jan 16, 2027Sunrise Marathon 5K/10K/13.1 SAN DIEGO San Diego, CAFrom $42Register Sat, Jan 16, 2027Sunrise Marathon 5K/10K/13.1 SAN FRANCISCO Los Angeles, CAFrom $42Register Fri, Jan 22, 2027Resolution Run for Coffee 5K/10K/13.1 - Roseville Rocklin, CAFrom $40Details Sat, Jan 23, 2027LASAA Mug Run - LASD Pico Rivera Station Pico Rivera, CAFrom $30Details Sat, Jan 23, 2027Polar Bear Run 5K, 10K, and Half Marathon Long Beach, CAFrom $49Details Sat, Jan 23, 2027Beyond The Streets 5k, 10k & Half Marathon Canoga Park, CARegistration opens Jan 16, 2027FreeDetails Sat, Jan 23, 2027Palm Springs Health Run & Wellness Expo Palm Springs, CAFrom $60Details Sat, Jan 23, 2027Isnt She Lovely Lowrider Run San Diego, CAFrom $48Details Sun, Jan 24, 20272027 Highland Y Run Highland, CAFrom $44Details Sat, Jan 30, 2027Coyote Hills Fremont, CAFrom $72Details Sat, Jan 30, 2027Race to the Flagpole Livermore, CAFrom $45Details Sat, Jan 30, 2027RPV's Run For Myles Rancho Palos Verdes, CAFrom $55Details Sat, Jan 30, 2027Coffee Lovers Run LOS ANGELES Los Angeles, CAFrom $42Register Sat, Jan 30, 2027Coffee Lovers Run SACRAMENTO Sacramento, CAFrom $42Register Sat, Jan 30, 2027Coffee Lovers Run SAN DIEGO San Diego, CAFrom $42Register Sat, Jan 30, 2027Coffee Lovers Run SAN FRANCISCO San Francisco, CAFrom $42Register Sat, Jan 30, 2027Run for Donuts LOS ANGELES Los Angeles, CAFrom $42Register Sat, Jan 30, 2027Run for Donuts SACRAMENTO Sacramento, CAFrom $42Register Sat, Jan 30, 2027Run for Donuts SAN DIEGO San Diego, CAFrom $42Register Sat, Jan 30, 2027Run for Donuts SAN FRANCISCO San Francisco, CAFrom $42Register Sat, Jan 30, 2027La Vida Sucia Animal Series: Raccoon Run 5K • 10K • Kids Run South El Monte, CAFrom $50Details Sun, Jan 31, 2027Hensley Off Road Races Raymond, CAFrom $47Details Sun, Jan 31, 2027Besties Run 5K. 10K. Half Marathon , & Kids Dash Long Beach, CAFrom $53Details
Common Questions About Running a January 10K in California
What is a good 10K time?
Across the 22 of these January 10K races with published results from past editions, the median finisher ran 1:04:45, and the median winning time was 38:51. So anything under 1:04:45 puts you in the faster half of a typical field. That is the middle of these RunSignup fields, walkers and charity entrants included, not a national average.
How big is a typical January 10K field?
The median one finished 110 runners, across the 22 of these January 10K races with published results from past editions. Most are far smaller than the big-city events people picture, which means less crowding at the start and a friendlier field, with a last recorded finisher at 2:01:03.