boulder rez half marathon

Boulder Reservoir, boulder, Co

june 6, 2021

Boulder Rez Half: race details

The Spring Boulder Rez Half Marathon, 10K and 5K is quickly becoming a Boulder favorite! And, the incredible Colorado weather in the end of May couldn’t be better for hitting your new PR. Athletes travel from all over the US to run on this phenomenal course, with views of the Flatirons painted in the distance. Bring your friends and family to cheer you on, this is a spectator-friendly course. All participants will receive a glamorous finisher medal and cool shirts!
Runner Information GuideOfficial Race Results

Boulder Rez Half: race details

This amazing run course around the Boulder Reservoir is astonishing and remains mostly on dirt roads and trails. The course is flat with only 200 feet of elevation gain. The route will take you around the the Boulder Reservoir, where you will experience iconic views of the mountain range to the west.

The Half Marathon will complete 2 loops, and the 10K will complete one loop. 5K runners will run counterclockwise for 1.55 miles and then head back to the finish line in the parking lot area

Aid Stations
Aid Stations will be stocked with water and depending on COVID restrictions athletes may be required to bring their own cups and fill with our hands free coolers.  

Remember, the Half Marathon course makes 2 laps around the Rez, so you will hit these aid stations multiple times during the Half Marathon.

Event Schedule
6:00am - 7:15am: Race Day Packet Pick-Up

7:15am: Start of the Half Marathon

7:20am: Start of the 10K

7:25am: Start of the 5K

10:45am: Course Closes

Packet Pick-Up Dates & Times
Saturday, June 5th
Road Runner Sports Westminster 
Time: 12pm - 4pm
Address: 10442 Town Center Dr Suite 300, Westminster, CO 80021

When you stop by Road Runner Sports to pick up your bib, why not pick up a few things for the race? All 1st time VIP Family Members will receive $10 in Rewards Cash to use immediately for purchases. Current VIP Family Membership will receive DOUBLE REWARDS.

Race Morning
6:00am - 7:15am
Timing Trailer in Boulder Reservoir parking lot

Race Features
                                         Scenic, USATF sanctioned course
Accurately measured, clearly marked courses
Timing & Immediate Race Results
Participant Shirt
Finisher Medal
Post-Race Snacks
Runner Information Guide

Boulder rez half: Pricing

Distance1/1-4/28through 6/4through 6/6
Half Marathon$80$90$90
Half Marathon Relay$105$115$115

Boulder Rez Half: sponsors

boulder rez half: course Map

scenic running perfected.
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