Prediction Runs
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Prediction Runs

Southern, Illinois, United States View on map
Jan 11, 2026 – Dec 13, 2026 (America/Chicago local time)
Running

About this race

River to River Runners - Prediction Runs


What is a Prediction Run?


A prediction run is entirely different from other races that you’ve run in the past. Rather than finishing first or running the fastest, the object of a prediction run is to finish as close to your predicted time as possible.

Can I use any sort of electronic device (i.e. watch, heart rate monitor, sundial, car, etc)?


No, that would make it much too easy.

No watches allowed!

How long is the course?


You won’t find out till you get there! Usually between 2.5 miles and 4.5 miles.

How much does it cost?


$1….Probably the cheapest race you will ever run.

How do I get involved?


Just show up.  The race times and locations are listed below and on our events page.  The races are open to members and non-members. However club members earn points at each race for a chance to win some money at the Annual River to River Runners Banquet held in January.

Pick your distance

Running

August Prediction Run

August 9, 3:00 PM Tunnel Hill Trail Parking New Burnside, IL

Jan 11, 2026 August Prediction Run 3:00 PM
Free
Closed

September Prediction Run

September 13, 3:00 PM Cannon Park Carterville, IL

Jan 11, 2026 September Prediction Run 3:00 PM
Free
Closed

October Prediction Run

October 11, 3:00 PM 1500 South 13th Herrin, IL

Jan 11, 2026 October Prediction Run 3:00 PM
Free
Open

November Prediction Run

November 1, 3:00 PM (Club Fall Social chili and hot dogs) Starlight Lake Marion, IL

Jan 11, 2026 November Prediction Run 3:00 PM
Free
Open

December Prediction Run

December 13, 3:00 PM (Club Christmas Social) 773 Foster Lane Marion, IL

Jan 11, 2026 December Prediction Run 3:00 PM
Free
Open

Typical race-day weather

Based on 6 years of Open-Meteo archive data for this event's race dates in Southern, plus the 3 days either side.

Temp (°C)
Minimum temperature (race-week average) 9.2° / Maximum temperature (race-week average) 18.8°
Feels Like (°C)
Minimum feels like — heat index / wind chill (race-week average) 6.6° / Maximum feels like — heat index / wind chill (race-week average) 19.6°
Peak wind (km/h)
Strongest wind of the day (race-week average)
19.3
Precip (mm)
Precipitation over the day (race-week average)
2.9mm
Humidity
Mean relative humidity (race-week average)
69.9%
Sunrise
Sunrise at the start line on January 11, 2026 (CST)
Sunset
Sunset at the start line on January 11, 2026 (CST)
Daylight
Hours between sunrise and sunset on race day
9h 35m

The sun rises at 7:18 AM and sets at 4:54 PM local time (CST) in Southern on January 11, 2026 — 9h 35m 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.

Reviews

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Results — Prediction Runs

2025 edition View Results
2024 edition View Results
2023 edition View Results
2022 edition View Results
2021 edition View Results

Other races near Southern

Different organizers, within 40 miles, in the next three months

Find upcoming events by distance:

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, 2 Southern events

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