Nielson Challenge
Nielson Challenge logo

Nielson Challenge

Colorado Springs, Colorado, United States View on map
Jan 03, 2026 – Sep 05, 2026 (America/Denver local time)
Running

About this race

IF YOU HAVE A FOREVER BIB THERE IS NO NEED TO REGISTER.  YOU ARE ALREADY PRE-REGISTERED EACH MONTH.

RACE STARTS AT 8:00 A.M.   THE START LINE CLOSES AT 8:05 A.M.

This is a 2 mile race held the first Saturday of each month.  You are running against your handicap, which is computed from your previous results for the last two years.

The first time you run this event, you'll establish a base time for yourself. This base time is used to generate a handicap time. The handicap time is calculated using an algorithm developed by Bob Royse, and it's geared to favor a beginning runner and the slower runners. Click here for an explanation of the handicap algorithm.

Once you have an established handicap, you are racing against your handicap time. The person who improves the most from their handicap time is the winner. 

As mentioned before, the handicap does favor a beginning runner or a slower runner who is putting in a lot of quality training time, as it's these types of runners who tend to have significant time improvements running the same course. But the race is also good for established runners and the swift of feet because it gives those runners a good indication of their fitness level. It's the same 2 mile course each month. Thus given similar weather conditions, you have a very good basis to check out your running fitness from month to month.

Awards

At each monthly race, the person who improves the most over their handicap earns a Nielson shirt. 

The shirts are generously donated by Michael Schenk of EON Studios, located at 836 N Institute in Colorado Springs (633-7986). Visit EON Studios for all of your screen printing needs. Michael gets his exercise on a bicycle, while his wife Susan does the running in the family.

Pick your distance

Running

8:00 AM Start

Jan 03, 2026 3.2K 8:00 AM
Free
Closed

8:00 AM Start

Jan 03, 2026 3.2K 8:00 AM
Free
Closed

8:00 AM Start

Jan 03, 2026 3.2K 8:00 AM
Free
Closed

8:00 AM Start

Jan 03, 2026 3.2K 8:00 AM
Free
Closed

8:00 AM Start

Jan 03, 2026 3.2K 8:00 AM
Free
Closed

8:00 AM Start

Jan 03, 2026 3.2K 8:00 AM
Free
Closed

8:00 AM Start

Jan 03, 2026 3.2K 8:00 AM
Free
Closed

Typical race-day weather

Based on 13 years of Open-Meteo archive data for this event's race dates in Colorado Springs, plus the 3 days either side.

Temp (°C)
Minimum temperature (race-week average) 2.6° / Maximum temperature (race-week average) 17.0°
Feels Like (°C)
Minimum feels like — heat index / wind chill (race-week average) -1.1° / Maximum feels like — heat index / wind chill (race-week average) 16.1°
Peak wind (km/h)
Strongest wind of the day (race-week average)
17.9
Precip (mm)
Precipitation over the day (race-week average)
1.1mm
Humidity
Mean relative humidity (race-week average)
49.9%
Sunrise
Sunrise at the start line on January 3, 2026 (MST)
Sunset
Sunset at the start line on January 3, 2026 (MST)
Daylight
Hours between sunrise and sunset on race day
9h 32m

The sun rises at 7:17 AM and sets at 4:50 PM local time (MST) in Colorado Springs on January 3, 2026 — 9h 32m 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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Other races near Colorado Springs

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

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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, 118 Colorado Springs events

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