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
Location distance guide
Colorado half marathons
Colorado half marathon guide with source-backed race region, mapped-route counts, elevation profiles, cost signals and route evidence where available.
Colorado half marathons coverage
15Race pages9Mapped routes3Elevation profiles60%Map coverage
Featured race pages
Featured Colorado half marathons
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
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
19 SEPMAP
Pikes Peak Marathon & Ascent
Colorado
Event weekend
- Map
- Character
GPS trace: 1,302 pts / www.pikespeakmarathon.org
- Mountainous
- Countryside
- Mountain
- City
15 MAYMAP
Denver Colfax Marathon
Colorado
Event weekend
- Map
- Character
GPS trace: 553 pts / www.runcolfax.org
- City
- Parkland
- Countryside
- Mountain
12 JULMAP
Heatwave Half Marathon - Colorado Springs
Colorado
Event weekend
- Map
- Character
GPS trace: 729 pts / runsignup.com
- Parkland
- City
- Road
- Trail
03 OCTMAP
The Colorado Springs Marathon
Colorado
Event weekend
- Map
- Character
GPS trace: 653 pts / thecoloradospringsmarathon.com
- City
- Riverside
- Parkland
- Mountain
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
Half MarathonMAP
That Dam Run (Denver)
Colorado
- Map
- Character
GPS trace: 625 pts / www.rundenverseries.com
- Rolling
- Parkland
- Coastal
- Forest
19 APRSCORE
Horsetooth Half Marathon
Colorado
Event weekend
- Character
- Net Downhill
- Lakeside
- Coastal
- Mountain
15 AUGSCORE
Boulder Rez Marathon
Colorado
Event weekend
- Character
- Parkland
- Mountain
- Lakeside
- Road
27 SEPSCORE
Boulderthon
Colorado
Event weekend
- Character
- Gently Rolling
- City
- Coastal
- Mountain
27 JUNSCORE
Slacker Half Marathon (Georgetown)
Colorado
Event weekend
- Character
- Net Downhill
- Mountain
- Historic
- City
06 JUNSCORE
Steamworks Half Marathon
Colorado
Event weekend
- Character
- Gently Rolling
- Mountain
- Riverside
- Countryside
02 MAYSCORE
The Colorado Marathon (Fort Collins)
Colorado
Event weekend
- Character
- Net Downhill
- Riverside
- City
- Parkland
Related race guides
Colorado running races
All race pages in this location guide across every qualifying distance.
Half Marathons
All indexed half marathon race pages, including route evidence and ranking filters.
Half Marathon route maps in Colorado
Mapped half marathon race pages with stored route geometry, elevation metrics and route provenance where available.
Colorado half marathon comparisons
Estes Park Marathon and Half Marathon vs Golden Leaf Half Marathon (Aspen)
Lowest-GAP routes compared for fastest available course shape.
Arrowhead Half Marathon & 5K (Vail/Edwards) vs Golden Leaf Half Marathon (Aspen)
Hilliest mapped routes compared for runners who want climbing.
Golden Leaf Half Marathon (Aspen) vs The Colorado Springs Marathon Half Marathon
Best race-day conditions compared with route, cost and evidence context.
Colorado half marathons questions
What Colorado half marathons are included?
This guide includes 15 half marathon race pages whose source-backed event region is Colorado. Nearby races by radius are not included.
Which Colorado half marathons have route maps?
9 Colorado half marathons currently have stored route geometry. Route traces appear only when stored geometry exists.
How are featured Colorado half marathons ordered?
Featured races are ordered by available evidence first: stored route geometry, elevation profiles, route metrics, cost data, dates and race-character tags.