Saint Louis River to River
About this race
This is an unsanctioned event. This means the event is not recognized, supported, or supervised by any official organization. There are no bibs, trackers, or placements. This run is for those looking to spice up a training run or looking for a reason to get the crew together. St. Louis River to River is a point-to-point 28(ish) mile route and with it being unsanctioned or a self-supported route, it comes with some logistical planning on the runner’s end. Unsanctioned Hybrid has provided an outline of where bathrooms and water may be available under "Event Information", but it will be subject to the STL River to River route on Strava. You are free to create your own or follow someone else’s route. Just make sure your start/finish lines are the base of the Saint Louis Arch and the Lewis and Clark statue in Frontier Park, Saint Charles. Registered participants will receive a lapel pin to remember the journey on foot. Go after it solo, with a friend, or with a group; just make sure to enjoy your adventure without the course markers. Keep your head up, eyes open, and participate at your own risk.
Pick your distance
Running
28 Mile
Accessible Bathrooms & Water: Start: Saint Louis Gateway Arch 5.25 miles- water fountain (to runner's left down gravel path- this foundation is off course a tiny bit) 6.15 miles- Forest Park Visitor Center (6am-8pm) has bathrooms and water fountains available inside with a water fountain outside (the visitor center will be .25 miles off course) 7.10 miles- water fountain at street intersection 13 miles- Stacy Park in Olivette has bathrooms and water Finish: 28.5 miles Lewis and Clark Statue, Frontier Park 29 miles- bathrooms and water fountain just past Frontier Stage *all mileage is subject to watch gps and how the wind blows that day **there are various gas stations and grocery stores between miles 10 and 19 if additional aid is needed ***subject to park hours & discretion
Typical race-day weather
Based on 10 years of Open-Meteo archive data for this event's race dates in Saint Louis, plus the 3 days either side.
The sun rises at 6:02 AM and sets at 7:52 PM local time (CDT) in Saint Louis on May 1, 2026 — 13h 49m 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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🏃 Plan Your Next Race in Saint Louis
Find upcoming events by distance:
- Saint Louis 5K Races 76 races
- 10K Run Events in Saint Louis 23 races
- Saint Louis Half Marathons 16 races
- Marathons in Saint Louis 2 races
- Saint Louis Running Calendar 2026 98 races
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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