Dam Ultra 50K & Half Marathon
About this race
Willow Running USA is heading west for our first running event for the 2027 season. The stunningly beautiful fully paved River Mountain Trails is the setting for the Dam Ultra 50k & Half Marathon in Boulder City, Nevada.
Boulder City, NV is nestled between the city of Las Vegas, NV and the Boulder Dam. This inaugural event will benefit St. Jude’s Ranch for Children.
Pick your distance
Running
DAM Ultra 50K
DAM Half Marathon
Race-day daylight
We have no recorded weather for Boulder City yet, but sunrise and sunset follow from the venue and the date.
The sun rises at 6:41 AM and sets at 5:04 PM local time (PST) in Boulder City on January 30, 2027 — 10h 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.
Reviews
Done this event?
If you've participated in this event, share your experience with other runners
Other races near Boulder City
Different organizers, within 40 miles, in the next three months
Inspirada Runners Turkey Trot 5k*
Out with the Old 1/2 Marathon, 10K, and 5K
World Run Day Virtual 5K - Las Vegas
Halloween Trick or Trot Run 5K/10K/13.1 LAS VEGAS
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, 1 Boulder City event
Spotted something wrong? Tell us and we'll fix it.