Big River Unpaved
Big River Unpaved logo

Big River Unpaved

Saint Louis, Missouri, United States View on map
Apr 19, 2026 – Jun 28, 2026 (America/Chicago local time)
Running

About this race

Have you considered getting into trail running or hiking, but didn’t know where to start, or were apprehensive about venturing out onto the trails alone? Big River Unpaved is a FREE, fun, friendly, and first-class training program for runners and walkers of all abilities. This program is geared for people new to hiking or trail running, looking for a fun, social, and supportive atmosphere in which to venture out into the outdoors. Our trail excursions will be supported by guides who will help you “stay found” and share knowledge about trail etiquette and technique. Our trail excursions will help make hitting the trails more comfortable and accessible by providing comradery and education in a fun, social, and supportive atmosphere. 

This program is FREE! So get ready to lace up your trail shoes and get outside!

Details:

  • Weekly trail excursions on Sunday mornings at various locations throughout the St. Louis metro area. (Some of these trails will be a 30+ minute drive from the city and mid-county. The location schedule will be shared with registered participants.) The spring season also includes Thursday evening trail outings.
  • Weekly email newsletter to keep you informed
  • Beginner-friendly
  • Experienced Trail Guides to share motivation and advice (and help you “stay found”)
  • Age requirements - For safety reasons we can't accommodate unaccompanied minors. Those under 18 must be accompanied by (running/hiking with) their guardian for the duration of any trail excursion
  • Hiking Pace - Our Hike Guides will generally maintain a pace faster than 2.5mph or 24:00/mile. Participants desiring to hike slower are welcome to attend but may be hiking without Guide support.
  • Ruckers welcome!

For more information, visit https://www.bigriverrunning.com/run/unpaved/

Pick your distance

Running

Big River Unpaved

Apr 19, 2026 Big River Unpaved 7:30 AM
Free
Closed

Typical race-day weather

Based on 12 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) 14.1° / Maximum temperature (race-week average) 24.1°
Feels Like (°C)
Minimum feels like — heat index / wind chill (race-week average) 13.0° / Maximum feels like — heat index / wind chill (race-week average) 27.2°
Peak wind (km/h)
Strongest wind of the day (race-week average)
16.4
Precip (mm)
Precipitation over the day (race-week average)
3.7mm
Humidity
Mean relative humidity (race-week average)
70.0%
Sunrise
Sunrise at the start line on April 19, 2026 (CDT)
Sunset
Sunset at the start line on April 19, 2026 (CDT)
Daylight
Hours between sunrise and sunset on race day
13h 22m

The sun rises at 6:18 AM and sets at 7:41 PM local time (CDT) in Saint Louis on April 19, 2026 — 13h 22m 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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