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Trail Running Calendar near Brighton 2026-2027

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Explore the top trail runs near Brighton for 2026-2027! We've gathered 13 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.

August 2026
Aug
29
Sa

RexRun For PAWSitivity Trail Run/Walk

Trail Run 5 km
A community trail event at the Arapahoe County Fairgrounds on 08/29/2026 with a 5K run, a family 5K walk that allows leashed dogs, and a kids 1 mile plus demonstrations, vendors, and a pancake breakfast.
September 2026
Sep
5
Sa

Demon Dash

Trail Run 5 km
Join the community for a 5K run or walk on a brand new dirt course at the North Arvada Middle School Athletic Complex. Support local high school racers before taking on this off road route yourself.
Sep
11-12
Fr - Sa

American Heroes Run

Trail Run 5 km 9 mi ... 551 min 100 mi
Multi-distance running weekend in Longmont, CO on a flat 1.05-mile loop, offering in-person and virtual options plus awards and on-site aid.
Sep
19
Sa

Break of Dawn North Table Trail Race

Trail Run 5 mi 10 mi
Trail fundraiser at North Table Mountain on September 19, 2026 offering 5 and 10 mile courses to support BeyondHome's work with families.
Sep
20
Su

Expo Park XC Run

Trail Run 3 km 4 km 5 km
A day of youth and adult cross country races in Aurora, Colorado on September 20, 2026, featuring grass courses with small undulations, a creek crossing, and bale jumps; distances run from 2k youth races up to a 5k open race.
October 2026
Oct
3
Sa

HRCA Wildcat Mountain Trail Race

Trail Run 2 mi 10 km 10 mi
Experience the scenic HRCA Backcountry Wilderness Area with trail races for the whole family. Enjoy rolling hills and open views followed by a pancake breakfast and finisher medals for all participants in Littleton.
Oct
17
Sa

The Great Trailhead Foot Race 10 Miler

Trail Run 5 mi 10 mi
Experience single track trails and dirt paths at Bear Creek Lake Park with views of the Denver skyline. Enjoy a post race party with food and beverages included in your registration for both the 5 and 10 mile distances.
Oct
17
Sa

Trail Apples

Trail Run 4 mi 8 mi 12 mi
Oct
24-25
Sa - Su

The Barnyard Backyard Ultra

Backyard Ultra 7 km
A backyard ultra at Luvin Arms Animal Sanctuary on Oct 24–25, 2026 with hourly 4.167-mile loops on mostly flat dirt, grass, and gravel plus on-site race camp and cupless aid.
Oct
25
Su

Monsterdash - Louisville

Trail Run 5 km 10 km Half Marathon
MonsterDASH Louisville on Oct 25, 2026 offers a new half marathon plus 5k, 10k and a kids mile with costume contests, expo, and themed runner perks.
Oct
31
Sa

Eerie Erie

Road Race Trail Run 5 km 10 km
A Halloween themed 5k and 10k through historic downtown Erie and Coal Creek trails, with a kids Goblin Run and BOLDERBoulder qualifier status. The event supports the Erie Optimist Club as its primary fundraiser.
November 2026
Nov
14
Sa

Louisville Trail Race

Trail Run 5 km 10 km 13 mi
Trail races in Louisville, Colorado offering half marathon, 10K and 5K on dirt trails with views of the Flat Irons and family-friendly post-race festivities.
December 2026
Dec
12
Sa

Santa Claus Run

Trail Run 5 km 10 km Half Marathon
Holiday trail runs in Louisville CO with 5k, 10k, a new half marathon, expo pickup, giveaways, family activities, and a visit from Santa.
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