Out with the Old 1/2 Marathon, 10K, and 5K
About this race
Keep running and stay fit this holiday season by joining us for Calico Racing’s “Out with the Old” 1/2 Marathon, 10K, and 5K at Sunset Park! This budget friendly race celebrates past Calico Racing events and offers a deep discount on entry fees in exchange for recycled (left over) event shirts, medals, and awards. Las Vegas’s original! With a low price, easy logistics, and fun times, why not sneak in this final year end event- you’ll be back to your holiday shopping and parties in no time, and guilt free!
We’ll be offering 5K, 10K, and 1/2 Marathon Distances.
Join fellow runners on December 20, 2025 for the Out with the Old 1/2 Marathon, 10K, and 5K. It's a fantastic 5K, 10K, Half-Marathon featuring a flat and fast course in Las Vegas.
Pick your distance
Running
5K
10K
1/2 Marathon
Weather Overview
These values reflect historical conditions on the race dates in Las Vegas in 2025, from Open-Meteo archive data.
About Las Vegas
Out with the Old 1/2 Marathon, 10K, and 5K takes place in Las Vegas, Nevada, United States. The local timezone is America/Los_Angeles.
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🏃 Plan Your Next Race in Las Vegas
Find upcoming events by distance:
- Las Vegas 5K Races Best Las Vegas routes for beginners and speed work.
- 10K Run Events in Las Vegas The most popular local distance in Nevada.
- Las Vegas Half Marathons Top-rated 21.1K courses in the Las Vegas area.
- Marathons in Las Vegas Scenic 42.2K routes and Las Vegas Boston qualifiers.
- Las Vegas Running Calendar 2026 See all upcoming race dates.
Race information has been sourced from the event's official website and other publicly available resources. For the most up-to-date details, please refer to the official website directly. If you notice any incorrect or missing information, don't hesitate to reach out to us by email.