Race calendar · August 2027
56 Half Marathon 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.
56 Half Marathon races in August 2027
What the field actually runs
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
Half Marathon races do not spread evenly across August. The busiest weekend is August 14 and August 15, with 16 of them. Another 1 fall on a weekday.
By the numbers
The August Half Marathon races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
It is one of the thinnest months of the year for the Half Marathon. August carries 56, against 523 in October. Expect to book earlier and travel further, and start from the states below rather than from a date.
The busiest weekend is August 14 and August 15, with 16 Half Marathon races on those two days, and the single busiest day is Saturday, August 14 with 13. Another 1 fall on a weekday, which is worth knowing if you are traveling for one.
As early as you can. 35 of these August Half Marathon races already have a price increase on the calendar, and 41 are open for entry right now. Another 15 have published an opening date and have not opened yet.
The typical entry is $34.95, with paid entries running from $13 up to $97. Entry fees climb as race day gets closer, so the same race is usually cheapest the week it opens.
Across the 39 of these August Half Marathon races with published results from past editions, the median finisher ran 2:11:25, and the median winning time was 1:24:00. So anything under 2:11:25 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.
The median one finished 99 runners, across the 39 of these August Half Marathon 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 3:34:05.
Colorado has 6, California has 5, Florida has 5, Utah has 5, Texas has 4. If you are willing to travel, those are the states where an August weekend gives you the most to choose from.
Yes, 4 races around the United States get you off the pavement: 3 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.
July and September sit either side of August, which is where most people look next when a date does not fit.
