Is August a good month for a 10K?
It is one of the thinnest months of the year for the 10K. August carries 92, against 694 in October. Expect to book earlier and travel further, and start from the states below rather than from a date.
Race calendar · August 2027
August 2027 10K Races in the United States
92 10K races across the US in August 2027, sorted by date. Which weekends are busiest, what the fields actually run, entry fees, and where each one starts.
92 10K races in August 2027
What the field actually runs
August 10K Races, By the Numbers
1:06:38Median finish time
43:33Median winning time
48Median field size
65August 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 Sep 22, 2026.
When in August
The August Race Weekends
10K races do not spread evenly across August. The busiest weekend is August 14 and August 15, with 26 of them. Another 1 fall on a weekday.
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 State
August 10K Races by City
Soonest 10K Races in August
92 total Sun, Aug 1, 2027Little Miami Half Marathon and 10K Morrow, OHFrom $45Details Sun, Aug 1, 2027Two Face 10K Wexford, PAFrom $65Details Sun, Aug 1, 2027Heatwave Half Marathon/5K/10K - Kansas City Parkville, MORegistration opens Oct 1From $22Details Sun, Aug 1, 2027Heatwave Half Marathon5K/10K - Houston Houston, TXRegistration opens Oct 1From $22Details Sun, Aug 1, 2027Heatwave Half Marathon/5K/10K - Greater Chicago Greater Chicago, ILRegistration opens Oct 1From $22Details Fri, Aug 6, 2027High Mountain Half Marathon 2027 Lakeside, AZFrom $25Details Sat, Aug 7, 2027Run2Overcome 5k & 10k Greenville, SCFrom $15Details Sat, Aug 7, 2027Summer Sizzler- Louisville Louisville, KYRegistration opens Oct 1From $17Details Sat, Aug 7, 2027Summer Sizzler- Denver Denver, CORegistration opens Oct 1From $22Details Sat, Aug 7, 2027Summer Sizzler- St. Paul St Paul, MNRegistration opens Oct 1From $22Details Sat, Aug 7, 2027Green Valley Lake 5k/10k/& Half Marathon Green Valley Lake, CAFrom $40Details Sat, Aug 7, 2027Worth the Weight Race Johnstown, PARegistration opens Feb 7, 2027From $10Details
Common Questions About Running an August 10K
When in August are most 10K races held?
The busiest weekend is August 14 and August 15, with 26 10K races on those two days, and the single busiest day is Saturday, August 14 with 18. Another 1 fall on a weekday, which is worth knowing if you are traveling for one.
When should I sign up for an August 10K?
As early as you can. 30 of these August 10K races already have a price increase on the calendar, and 45 are open for entry right now. Another 47 have published an opening date and have not opened yet.
How much does an August 10K cost to enter?
The typical entry is $30, with paid entries running from $10 up to $65. Entry fees climb as race day gets closer, so the same race is usually cheapest the week it opens.
What is a good 10K time?
Across the 65 of these August 10K races with published results from past editions, the median finisher ran 1:06:38, and the median winning time was 43:33. So anything under 1:06:38 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 August 10K field?
The median one finished 48 runners, across the 65 of these August 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 1:42:40.
Which states have the most August 10K races?
Texas has 14, Florida has 13, California has 7, Kentucky has 5, Colorado has 4. If you are willing to travel, those are the states where an August weekend gives you the most to choose from.
Are there trail 10K races in August?
Yes, 3 races around the United States get you off the pavement: 2 are trail races, and 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.