19 APRSCORE
Horsetooth Half Marathon
Colorado
Event weekend
- Character
- Net Downhill
- Lakeside
- Coastal
- Mountain
annual location distance guide
2026 Half Marathons in Colorado
2026 half marathon guide for Colorado, built from source-backed race dates, stored event-region values, route-map coverage, elevation profiles and entry signals where available.
2026 Half Marathons in Colorado coverage
12Dated race pages7Mapped routes3Elevation profiles58%Map coverage
Dated race pages
Featured 2026 half marathons in colorado
06 JUNSCORE
Steamworks Half Marathon
Colorado
Event weekend
- Character
- Gently Rolling
- Mountain
- Riverside
- Countryside
20 JUNMAP
Estes Park Marathon and Half Marathon
Colorado
Event weekend
- Map
- Profile
- Character
GPS trace: 542 pts / www.epmarathon.org
- Net Downhill
- Mountain
- Forest
- Lakeside
- Ascent
- 61 m
- m/km
- 2.9 m/km
-9.9%GAP
27 JUNSCORE
Slacker Half Marathon (Georgetown)
Colorado
Event weekend
- Character
- Net Downhill
- Mountain
- Historic
- City
12 JULMAP
Heatwave Half Marathon - Colorado Springs
Colorado
Event weekend
- Map
- Character
GPS trace: 729 pts / runsignup.com
- Parkland
- City
- Road
- Trail
08 AUGMAP
Georgetown to Idaho Springs Half Marathon
Colorado
Event weekend
- Map
- Character
GPS trace: 542 pts / www.gtishalf.com
- Net Downhill
- Mountain
- Countryside
- Waterfront
15 AUGSCORE
Boulder Rez Marathon
Colorado
Event weekend
- Character
- Parkland
- Mountain
- Lakeside
- Road
22 AUGMAP
Arrowhead Half Marathon & 5K (Vail/Edwards)
Colorado
Event weekend
- Map
- Profile
- Character
GPS trace: 1,225 pts / www.vailrec.com
- Mountainous
- Mountain
- Forest
- Trail
- Ascent
- 939 m
- m/km
- 44.5 m/km
14.1%GAP
19 SEPMAP
Pikes Peak Marathon & Ascent
Colorado
Event weekend
- Map
- Character
GPS trace: 1,302 pts / www.pikespeakmarathon.org
- Mountainous
- Countryside
- Mountain
- City
26 SEPMAP
Golden Leaf Half Marathon (Aspen)
Colorado
Event weekend
- Map
- Profile
- Character
GPS trace: 907 pts / www.utemountaineer.com
- Net Downhill
- Mountain
- Countryside
- Forest
- Ascent
- 533 m
- m/km
- 24.9 m/km
2.0%GAP
27 SEPSCORE
Boulderthon
Colorado
Event weekend
- Character
- Gently Rolling
- City
- Coastal
- Mountain
03 OCTMAP
The Colorado Springs Marathon
Colorado
Event weekend
- Map
- Character
GPS trace: 653 pts / thecoloradospringsmarathon.com
- City
- Riverside
- Parkland
- Mountain
Related race guides
2026 half marathons
All dated half marathon race pages in this calendar period.
Colorado half marathons
All indexed half marathon race pages in Colorado, across every date.
Colorado running races
Every indexed race page in this location, across distances and calendar periods.
Half Marathons
All indexed half marathon race pages, including route evidence and ranking filters.
Half Marathon route maps
Mapped half marathon race pages with stored route geometry where available.
2026 Half Marathons in Colorado questions
What 2026 half marathons in colorado are included?
This guide includes 12 half marathon race pages whose latest source-backed race date falls in 2026 and whose stored event-region value is Colorado. Nearby races by radius are not included.
Does this mean every 2026 half marathon in Colorado recurs every year?
No. Calendar guide pages use the latest published race date for each race page. They do not infer annual recurrence unless that edition date is present.
Which 2026 half marathons in colorado have route maps?
7 half marathon race pages in this guide currently have stored route geometry. Route traces appear only when stored geometry exists.