Is August a good month for a 5K?
It is one of the thinnest months of the year for the 5K. August carries 267, against 2,212 in November. Expect to book earlier and travel further, and start from the states below rather than from a date.
Race calendar · August 2027
5K Races in August 2027
267 5K 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.
August sits deep in summer, and heat shapes everything about racing a 5K this month. Across much of the country, humidity and midday temperatures push race directors toward early-morning or evening starts, and some lean into it entirely with glow runs and night-format events. If you are racing in August, plan around the clock, not just the course.
Where you are matters enormously. The Northeast, the upper Midwest, and higher elevations in the mountain West can offer genuinely pleasant racing mornings. The South and much of the interior are a different story, where humidity alone can slow a 3.1-mile effort by more than most runners expect. Knowing your region shapes every decision, from pacing to what you drink before the gun.
Most August 5Ks carry real community character: charity runs, festival weekends, multi-distance events where the 5K shares a morning with longer distances. That format suits first-timers and casual runners well, and it means the atmosphere at the finish line is usually relaxed rather than competitive.
What the field actually runs
August 5K Races, By the Numbers
35:41Median finish time
18:39Median winning time
125Median field size
176August 5K 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 August
The August Race Weekends
5K races are not spread evenly across August. 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 August 5K races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
August 5K Races by State
Florida 26Texas 22California 15Michigan 12Pennsylvania 12North Carolina 11Kentucky 10Colorado 9Wisconsin 9Illinois 8Indiana 8Minnesota 8Missouri 8Ohio 8Oklahoma 8Washington 8Alabama 7Maryland 7New York 7Tennessee 7Georgia 6Utah 5Arkansas 4Iowa 4New Jersey 4Arizona 3Kansas 3Nebraska 3South Dakota 3Virginia 3Alaska 2Connecticut 2Maine 2Massachusetts 2South Carolina 2Idaho 1Mississippi 1Nevada 1New Hampshire 1New Mexico 1North Dakota 1Oregon 1Vermont 1Wyoming 1
5K Runs by City in August
The Next 5K Runs in August
267 total Sun, Aug 1, 2027TripleThreat Half Marathon & 5K Rockport, MAFrom $35Details Sun, Aug 1, 2027Craft Classic Seattle Redmond, WAFrom $42Details Sun, Aug 1, 2027Race of Hope Southampton Southampton, NYRegistration opens Jul 28, 2027From $55Details Sun, Aug 1, 2027Run LA 10 Miler Los Angeles, CAFrom $30Details Sun, Aug 1, 2027Heatwave Half Marathon/5K/10K - Kansas City Parkville, MOFrom $31Details Sun, Aug 1, 2027Heatwave Half Marathon5K/10K - Houston Houston, TXFrom $33Details Sun, Aug 1, 2027Heatwave Half Marathon/5K/10K - Greater Chicago Elk Grove Village, ILFrom $38Details Sun, Aug 1, 2027Shark Week Showdown 5K, 10K - San Antonio, TX San Antonio, TXFrom $35Details Sun, Aug 1, 2027Shark Week Showdown 5K & 10K - Houston, TX Houston, TXFrom $35Details Sun, Aug 1, 2027MAYEM - HYBRID 5K CHALLENGE Long Beach, CAFrom $55Details Thu, Aug 5, 2027Lanark Park HOME of The DRAGONS 5K Canoga Park, CAFrom $20Details Fri, Aug 6, 2027High Mountain Half Marathon 2027 Lakeside, AZFrom $25Details
Common Questions About Running an August 5K
Why do so many August 5Ks start early in the morning or at night?
Heat management is the simple answer. Race directors in warm climates schedule starts before the sun is high or after it sets to keep conditions safer and more comfortable. Night-format events like glow runs have become genuinely common in August because they solve the heat problem while adding a social draw that fits the summer mood.
What should I wear for an August 5K?
Lightweight, light-colored, moisture-wicking fabric is worth prioritizing over anything cotton. A hat or visor helps for daytime starts. Runners in the South or inland areas should treat sunscreen as mandatory. At a night event, reflective or bright gear makes you visible and often fits the theme. Keep it minimal: at 3.1 miles, less fabric is almost always faster.
Is August a reasonable month to travel specifically for a 5K?
It can be, but the calculus is different from a fall race trip. Northern cities, coastal areas, and mountain towns tend to offer more forgiving conditions, making them worthwhile destinations. If you are targeting a personal best, build your travel around climate first and race format second. If the goal is a fun summer event, the themed night runs in August are worth seeking out wherever you are.
How far in advance should I start training to be ready for an August 5K?
A focused six-week build is enough for most runners who already have a base of regular running. If you are starting from scratch, give yourself closer to ten to twelve weeks. One underrated factor in August: do some of your training runs in heat similar to race conditions, so your body has adapted before you pin on a bib.
When in August are most 5K races held?
The busiest weekend is August 7 and August 8, with 75 of them, 62 of those on Saturday, August 7. Another 11 fall on a weekday, which is worth knowing if you are traveling for one.
What is a good 5K time?
Across the 176 of these August 5K races with published results from past editions, the median finisher ran 35:41, and the median winning time was 18:39. So anything under 35:41 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 5K field?
The median one finished 125 runners, across the 176 of these August 5K 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 1:05:59.
Which states have the most August 5K races?
Florida has 26, Texas has 22, California has 15, Michigan has 12, Pennsylvania has 12. If you are willing to travel, those are the states where an August weekend gives you the most to choose from.
Are there trail 5K races in August?
Yes, 12 races around the United States get you off the pavement: 6 are trail races, and 6 mix road and trail.