Reindeer Run 5k Fun Run is a running race on December 6, 2026 in Union City, CA, with entry fees from $17 to $27.
From the Organizer
Date: Sunday, December 6, 2026
Location: Civic Center/City Hall | 34009 Alvarado-Niles Road, Union City, CA
Check-In: 8:00 AM | Race Begins: 9:00 AM
The reindeer are ready to run! Grab your friends, family, and favorite holiday gear and join us this December for the Reindeer Run 5K Fun Run & Walk. This festive community event is a great way to get active, celebrate the holiday season, and race your way to the finish line!
Award medals will be presented to the 1st, 2nd, and 3rd place finishers in each registration category, broken down by age group and gender: Youth Ages 12 & Under, Ages 13–17, 18–29, 30–39, 40–49, 50–59, 60–69, and 70+.
We’ll also have holiday-themed prize raffles for participants after the race!
Race Shirts
Race shirts are not included in the registration fee and will be available as an optional add-on during registration. A limited number of shirts may be available for purchase on race day while supplies last.
Registration
Pre-registration will close prior to race weekend. Walk-up registration will be available beginning at 8:00 AM on Sunday, December 6. Please arrive early to allow enough time to check in before the 9:00 AM start.
Rain or Shine
The Reindeer Run will take place rain or shine, so dress for the weather—and holiday attire is encouraged! Ugly sweaters, reindeer antlers, Santa hats, and other festive gear are welcome. Prizes will be given out on best dressed in holiday attire!
Weather
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
59°
Typical Low
43°
Chance of Rain
31%
Based on US Climate Normals data from Fremont, 3 mi from the venue.
Host City
Nearest Airport
OAK
San Francisco Bay Oakland International Airport · 14 mi
Time Zone
Pacific Time
From Endurance Grid
Line up lodging and travel early to lock in your race weekend.
Race Location
Your Next Start Line
Every finish line starts with a single decision. Claim your spot at Reindeer Run 5k Fun Run, put it on the calendar, and turn “someday” into a start date.
88
Days to train
Enter your email and we'll send more your way.
From Endurance Grid
Endurance Grid is here to help you understand the sport, decide if it’s the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.
Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.
From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Coming Up
Reindeer Run 5k Fun Run
Dec 6, 2026