When in August are most 5K races held?
The busiest weekend in Missouri is August 28 and August 29, with 4 of them, 3 of those on Saturday, August 28. Every one of them is on a Saturday or a Sunday.
Race calendar · August 2027 · Missouri
5K Races in Missouri in August 2027
Every 5K in Missouri in August 2027, all 9 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.
What the field actually runs
August 5K Races, By the Numbers
37:39Median finish time
20:27Median winning time
154Median field size
4August 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 Oct 22, 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 Field
The largest field of any August 5K in Missouri, from the most recent published results.
Missouri 5K Races by City in August
All 5K Runs in Missouri in August
9 total Sun, Aug 1, 2027Heatwave Half Marathon/5K/10K - Kansas City Parkville, MOFrom $31Details Sat, Aug 7, 2027Drink MO Beer 1 MILE Maryland Heights, MOFrom $35Details Sat, Aug 14, 2027Swifty Fun Run - 1 MILE Saint Louis, MOFrom $35Details Sat, Aug 14, 2027Medal Madness 5K, 10K, & 13.1M at Branson, MO (32) Branson, MOFrom $30Details Sat, Aug 21, 2027SALSA Run Columbia, MORegistration closedFrom $40Details Sat, Aug 28, 2027Summer Sizzler - Kansas City Kansas City, MOFrom $31Details Sat, Aug 28, 2027Ninja 5K & 10K at Independence, MO (35) Independence, MOFrom $30Register Sat, Aug 28, 2027Ninja 5K, 10K, & 13.1M at Branson, MO (35) Branson, MOFrom $30Register Sun, Aug 29, 2027Summer Sizzler - St Louis St Louis, MOFrom $32Details
Common Questions About Running an August 5K in Missouri
What is a good 5K time?
Across the 4 of these August 5K races with published results from past editions, the median finisher ran 37:39, and the median winning time was 20:27. So anything under 37:39 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 154 runners, across the 4 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 1:11:00.