When should I sign up for an August 10K?
As early as you can. 5 of these August 10K races already have a price increase on the calendar, and 5 are open for entry right now. Another 2 have published an opening date and have not opened yet.
Race calendar · August 2027 · California
August 2027 10K Races in California
Every 10K in California in August 2027, all 7 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.
7 10K races in August 2027
When in August
The August Race Weekends
10K races do not spread evenly across August. The busiest weekend is August 7 and August 8, with 2 of them.
By the numbers
The Biggest and Longest-Running
The August 10K races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
August 10K Races by City
Soonest 10K Races in August
7 total Sat, Aug 7, 2027Green Valley Lake 5k/10k/& Half Marathon Green Valley Lake, CAFrom $40Details Sun, Aug 8, 2027Sundae Funday - Ice Cream Run 5K, 10K, and Half Marathon Long Beach, CAFrom $39Details Sat, Aug 14, 2027Margaritaville Run San Diego Gaslamp 10K & 5K San Diego, CARegistration closedFrom $39Details Sun, Aug 15, 2027Race Thru the Redwoods Felton, CARegistration opens Jul 2, 2027From $25Details Sat, Aug 21, 2027Idyllwild Race 5K / 10K Idyllwild, CAFrom $40Details Sun, Aug 22, 2027Californian Dreamin 5K, 10K, & Half Marathon Long Beach, CAFrom $46Details Sat, Aug 28, 2027Night of the Running Dead 5K, 10K, 1 Miler, Half Marathon Long Beach, CAFrom $25Details
Common Questions About Running an August 10K in California
How much does an August 10K cost to enter?
The typical entry is $39, with paid entries running from $25 up to $45.99. Entry fees climb as race day gets closer, so the same race is usually cheapest the week it opens.
Are there trail 10K races in California in August?
Yes, one race around California gets you off the pavement: 1 mixes road and trail. Surfaces are not always published, so it is worth checking a specific race before you register.
10K Races in Other Months
July and September sit either side of August, which is where most people look next when a date does not fit.