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 Open-Meteo archive data for this event's race dates in Golden, plus the 3 days either side.

Temp (°C)
Minimum temperature (race-week average) 5.3° / Maximum temperature (race-week average) 20.7°
Feels Like (°C)
Minimum feels like — heat index / wind chill (race-week average) 2.0° / Maximum feels like — heat index / wind chill (race-week average) 20.7°
Peak wind (km/h)
Strongest wind of the day (race-week average)
16.3
Precip (mm)
Precipitation over the day (race-week average)
1.3mm
Humidity
Mean relative humidity (race-week average)
58.1%
Sunrise
Sunrise at the start line on May 23, 2026 (MDT)
Sunset
Sunset at the start line on May 23, 2026 (MDT)
Daylight
Hours between sunrise and sunset on race day
14h 36m

The sun rises at 5:39 AM and sets at 8:15 PM local time (MDT) in Golden on May 23, 2026 — 14h 36m 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

Done this event?

If you've participated in this event, share your experience with other runners

Other races near Golden

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

🏃 Plan Your Next Race in Golden

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, 9 Golden events

Spotted something wrong? Tell us and we'll fix it.