START 5K & 10K
START 5K & 10K logo

START 5K & 10K

Saint Louis, Missouri, United States View on map
Mar 07, 2026 – Oct 24, 2026 (America/Chicago local time)
Running

About this race

START is a FREE, welcoming 5K and 10K training program for beginning to novice runners. 

START 5K is geared for people new to running or getting back into the routine after some time off, looking for a structured, fun and friendly entry into fitness. The program starts slowly, gradually working our way to the goal of continuously running a 5k. Along the way you’ll learn important information on injury prevention, nutrition, stretching, proper running form, and many other topics. There is no pressure here, just positive support to help you achieve your goals! For more information visit https://www.bigriverrunning.com/run/start-5k/ 

START 10k is for beginning to novice runners. This program is geared for people who have previously run a 5k and would like to try a new distance or anyone who has taken some time off running and is seeking motivation and accountability! It is a great option for runners who have graduated from Big River’s START 5k program. We recommend being able to move (run/walk) continuously for 45 minutes at the start of the program, and being capable of completing a 5K in under 45 minutes. Additional program information can be found at https://www.bigriverrunning.com/run/start-10k/

Both the 5K and 10K training plan will be shared with registered participants. And the 5K and 10K groups will both train at the same locations on Wednesdays and Saturdays. So if you're undecided about which distance to train for, you can switch between 5K and 10K mid-season.

*We recommend that START 10K participants be able to complete a 5K in under 45 minutes. If you'd like to get faster at the 5K distance, then START 5K might be a better choice.

Pick your distance

Running

START 5K

Mar 07, 2026 5K 8:00 AM
Free
Closed

START 10K

Mar 07, 2026 10K 8:00 AM
Free
Closed

START 5K

Mar 07, 2026 5K 8:00 AM
Free
Closed

START 10K

Mar 07, 2026 10K 8:00 AM
Free
Closed

Typical race-day weather

Based on 11 years of Open-Meteo archive data for this event's race dates in Saint Louis, plus the 3 days either side.

Temp (°C)
Minimum temperature (race-week average) 15.2° / Maximum temperature (race-week average) 25.6°
Feels Like (°C)
Minimum feels like — heat index / wind chill (race-week average) 14.3° / Maximum feels like — heat index / wind chill (race-week average) 29.0°
Peak wind (km/h)
Strongest wind of the day (race-week average)
16.9
Precip (mm)
Precipitation over the day (race-week average)
4.0mm
Humidity
Mean relative humidity (race-week average)
68.9%
Sunrise
Sunrise at the start line on March 7, 2026 (CST)
Sunset
Sunset at the start line on March 7, 2026 (CST)
Daylight
Hours between sunrise and sunset on race day
11h 36m

The sun rises at 6:23 AM and sets at 5:59 PM local time (CST) in Saint Louis on March 7, 2026 — 11h 36m of daylight.

Course

No course map published yet.

The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.

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Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.

  • Entries, prices, waves and inclusions — the event's official registration page
  • Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
  • Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
  • Comparisons and counts — Race Discovery calendar, 113 Saint Louis events

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