Colorado summers are made for early-morning races, evening bike rides, and weekends spent outside.

In this guide, you’ll find:

Community 5Ks and summer races happening around the Ranch
Bike rides and mountain biking events across Highlands Ranch
Youth triathlon happening this summer

From casual fun runs to Backcountry trail rides, these are the active summer traditions worth planning around across South Denver.

Use the table of contents below to explore run, bike, and wellness events around the Ranch.

Move through Summer

South Denver Movement Guide

Run | 5Ks | Castle Rock — First Fridays

📅 June 5, July 3, Aug. 7
📍 Festival Park
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Castle Rock’s First Fridays combine free community 5Ks, live music, food trucks, cocktails, and downtown summer-night atmosphere throughout the season with unofficial fun runs beginning at 5:30 p.m. before the concerts kick off.

Run | Half-K | Highlands Ranch — Happy Hour

📅 June 19
📍 Civic Green Park
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One of the Ranch’s more lighthearted summer wellness events returns with a family-friendly half-K “race,” live music, drinks, and community atmosphere benefiting the HRCA Therapeutic Recreation Program.

Run | 5K | Parker — Dash Across the Dam

📅 June 20
📍 Rueter-Hess Reservoir
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Celebrate Father’s Day weekend with a family-friendly 5K at Rueter-Hess Reservoir featuring scenic reservoir views, pancake breakfast, commemorative swag, and post-run drinks as part of the Parker Parks and Recreation Run Series.

Run | 5K | Littleton — Before the Fourth

📅 June 27
📍 Clement Park
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The Before The Fourth 5K returns to Clement Park with a community-focused summer race through one of Littleton’s most popular outdoor spaces just ahead of Fourth of July celebrations.

Run | 5K | Highlands Ranch — Independence Day

📅 July 4
📍 Dorchester St.
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Kick off the Fourth of July with one of Highlands Ranch’s signature holiday traditions featuring a family-friendly community 5K welcoming runners, walkers, strollers, kids, and patriotic community spirit.

Run | Half, 10K & 5K | Castle Rock — Prairie Dog

📅 July 19
📍 Castle Rock
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Part of the Prairie Dog race series, the Summer Splash Prairie Dog race returns to Castle Rock with summer running along the East Plum Creek Trail featuring community race atmosphere, scenic routes, and post-race swag and celebrations.

Run | 5K | Highlands Ranch — Oktoberfest

📅 Sept. 26
📍 Highlands Ranch Town Center at 9 a.m.
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HRCA’s Oktoberfest 5K returns with a family-friendly fall race through Town Center featuring community atmosphere, festive costumes, and a hidden blue kettlebell somewhere along the course worth $100 to whoever finds it first.

Run | 5K & 10K | Parker — So Long Summer

📅 Sept. 26 (8 a.m.)
📍 Salisbury Park
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Parker’s So Long to Summer 5K/10K returns with community race atmosphere, pancake breakfast, post-run drinks, and family-friendly end-of-summer energy along the Salisbury Park trail system.

🚴Bike | Highlands Ranch — Bike to Work Day

📅 Wednesday, June 24 from 6:30—9a.m
📍 High Line Canal Trail & Centennial Trail
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HRCA, Highlands Ranch Metro District, and Highlands Ranch Water team up for the Highlands Ranch Super Stop with burritos, coffee, snacks, music, giveaways, and community cycling energy along the trail system.

🚴Bike | Backcountry — Mountain Bike Series

📅 May 20; July 8; July 29; Aug 19
📍 Backcountry Wilderness Area
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The Highlands Ranch Mountain Bike Series returns with four weeknight races through the Backcountry Wilderness Area featuring rotating trail routes across Highlands Point and Wildcat trail systems for riders of all ability levels.

🏊‍♂️🏃🚴Youth Triathlon | Highlands Ranch — HRCA

📅 June 25
📍 Eastridge Recreation Center & Falcon Park
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The Splash Mash Dash Kids Triathlon returns to Highlands Ranch with a family-friendly swim-bike-run event designed for young athletes looking to try triathlon in a fun and supportive community environment complete with finisher medals and post-race donuts.

The Ranch Scoop will continue curating the best runs, rides, races, and active summer traditions around South Denver all season long.

Join hundreds of locals exploring what summer around the Ranch looks like.

—Grace
Editor, The Ranch Scoop

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