Race Discovery
GMR Backyard Ultra
GMR Backyard Ultra logo

GMR Backyard Ultra

Golden, Colorado, United States View on map
May 23, 2026 (America/Denver local time)
Running

About this race

Date: 5/23/26

Time: 10:00 AM (check-in starts at 9:00)

Cost: $50.00 + Recommended minimum $25.00 Donation

Non-Profit Recipient: Sun Valley Kitchen and Community Center

The backyard Format:  Run one every hour until only one runner remains.  Every lap starts at the top of the hour, so you can choose to run your lap fast and get rest in between or run slow and save your energy.  This is intended to be a fun event with friends.  Come do one lap, or push yourself to the ultra distance if you chose.  4.17 mile lap

Registration is limited to the first 60 signups. The cost is $50. We also recommend a minimum $25 Donation to Sun Valley Kitchen and Community Center.  The registration fee will be used to supply aid station items, awards and temporary bathroom facilities (port-a-potties).

Pick your distance

Running

GMR Backyard Ultra

May 23, 2026 GMR Backyard Ultra 10:00 AM
$50.00
Closed

Typical race-day weather

Based on 1 year of historical conditions on this event's race dates in Golden.

Temp (°C)
Minimum temperature (race-day average) 3.0° / Maximum temperature (race-day average) 22.7°
Feels Like (°C)
Minimum feels like — heat index / wind chill (race-day average) -0.3° / Maximum feels like — heat index / wind chill (race-day average) 22.7°
Wind (km/h)
Average wind speed (race-day average)
12.9
Precip (mm)
Average precipitation (race-day average)
0.1mm
Humidity
Average relative humidity (race-day average)
56.0%

Course

Route map and elevation profile

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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Other races near Golden

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, 7 Golden events

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