Upcoming Races in Boulder

Endurance Grid lists 7 races in Boulder, Colorado, from July 2026 to May 2027.

7
Upcoming races
3
Sports covered

Host City

About Boulder, CO

Population

106,274

as of 2023

City Elevation

5,438 ft

Nearest Airport

BJC

Rocky Mountain Metropolitan Airport

Major Hub

DEN

Denver International Airport

Time Zone

Mountain Time

Races in Boulder, CO

Explore and filter upcoming endurance races in Boulder, Colorado on the map below — by sport, distance, price, or month.

7 races in Boulder

July 2026 Boulder, Colorado Races

3 upcoming races in Boulder, Colorado in July.
Jul
4
Sat
Running
Avery Brewing Co. 4K on the 4th
4910 Nautilus Ct N., Boulder, CO
Other
Avg 87° / 56°·5,438 ft city elevation
Jul
9
Thu
Running
BRR All-Comers Summer Track & Field Series #3
CU Potts Field, Boulder, CO
1 Mile · 5K · Other
Avg 88° / 57°·5,438 ft city elevation
Jul
23
Thu
Running
BRR All-Comers Summer Track & Field Series #4
CU Potts Field, Boulder, CO
2 Mile / 3K · Other
Avg 88° / 58°·5,438 ft city elevation

August 2026 Boulder, Colorado Races

1 upcoming race in Boulder, Colorado in August.
Aug
6
Thu
Running
BRR All-Comers Summer Track & Field Series #5
Potts Field, Boulder, CO
1 Mile · Other
Avg 87° / 57°·5,438 ft city elevation

September 2026 Boulder, Colorado Races

2 upcoming races in Boulder, Colorado in September.
Sep
13
Sun
Road Cycling
Buffalo Bicycle Classic
University of Colorado Boulder, Boulder, CO
Under 25 mi · 25–50 mi · 50–100 mi · 100+ mi · Century
Avg 80° / 49°·5,438 ft city elevation
Sep
27
Sun
Running
Running for Children's Rights to Both Parents - 9 of 50 Half Marathons in 50 States - Colorado
1303 Pearl St, Boulder, CO
Half Marathon
Avg 74° / 44°·5,438 ft city elevation

May 2027 Boulder, Colorado Races

1 upcoming race in Boulder, Colorado in May.
May
2
Sun
Running
Emerge 5K
5565 Reservoir Rd, Boulder, CO
5K
Avg 66° / 38°·5,438 ft city elevation

Just Outside Boulder

Races near Boulder

Eldorado Run for the Cure
Thu, Aug 6
294 Artesian Drive, Eldorado Springs, CO
7 mi away
Let Freedom Run 5k/10k - Louisville
Sat, Jul 4
900 Via Appia Way, Louisville, CO
8 mi away
Louisville Fall Splash & Dash
Sun, Aug 30
900 Via Appia Way, Louisville, CO
8 mi away
Colorado 13er (Half Marathon/10k/5k)
Sun, Jun 6
1200 Dillon Road, Louisville, CO
8 mi away
AdventHealth Avista Louisville Turkey Trot
Thu, Nov 26
951 Spruce Street, Louisville, CO
9 mi away
Coyote Chase 5k
Sat, Aug 22
329 Campus Dr., Louisville, CO
10 mi away
Lafayette Music Fest -5K - 10K
Sat, Oct 3
400 W South Boulder Rd Suite, Lafayette, CO
11 mi away
Erie Half & 5k
Sun, Aug 16
Reliance Park, Erie, CO
12 mi away
The Pilgrimage Run 2026
Thu, Nov 26
450 Powers St, Erie, CO
12 mi away
TURKEY TREK (13.1, 10k, 5k & 2k)
Sat, Nov 21
Ralston Creek Trail @ Long Lake Ranch Park, Arvada, CO
13 mi away
James Test Site
Sun, Aug 30
804 4th ave, Lyons, CO
13 mi away
Runway 5K - Run for the Angels
Sat, Sep 26
11001 Control Tower Road, Broomfield, CO
14 mi away

Frequently Asked Questions (FAQs)

How many races are in Boulder, Colorado?+
Endurance Grid's Race Calendar lists 7 upcoming races in Boulder, Colorado, spanning 3 sports.
What kinds of races are held in Boulder?+
Boulder hosts road cycling, gravel, and running races.
Is there a race season in Boulder?+
Races in Boulder run throughout the year rather than in a single fixed season. Of the upcoming races on Endurance Grid's Race Calendar, the most are in July and September.
What race distances can you find in Boulder?+
Upcoming races in Boulder cover distances including 1 Mile, 2 Mile / 3K, 5K, Half Marathon, and Century.
What other cities near Boulder have races?+
Nearby race cities include Louisville and Arvada.