All-Colorado Marathon and Half Marathon Records
To the best of our knowledge, these are the fastest times ever run at a marathon or half marathon in the state of Colorado, on a USATF certified course. Some of the certified courses in Colorado are downhill courses which are not eligible for American Record purposes per USATF. However, we feel that because of the altitude factor, we will consider results run on those courses as eligible for this list. Please contact us if you feel you have run faster.
Looking for records for other distances? Check out Tim Rutherford’s page – Colorado Track Stats.
These records are copyrighted by Colorado Runner LLC. Any reproduction without the express written consent of Colorado Runner LLC is prohibited.
Updated 4/16/2024
Marathon Records
Male
| Age Group | Athlete | Race | Year | Time |
|---|---|---|---|---|
| 19 and Under | Awet Beraki | ADT | 2016 | 2:38:18 |
| 20-24 | Creighton King | Rawhide | 1983 | 2:22:12 |
| 25-29 | Norberto Segura | Rawhide | 1984 | 2:18:06 |
| 30-34 | Chris Siemers | Rock ‘n’ Roll | 2011 | 2:18:48 |
| 35-39 | Tyler McCandless | Colfax | 2022 | 2:21:08 |
| 40-44 | Ken Schei | Rawhide | 1982 | 2:31:44 |
| 45-49 | Ardel Boes | Rawhide | 1982 | 2:29:30 |
| 50-54 | Tom Bailey | Denver Post | 1981 | 2:38:57 |
| 55-59 | Tom Bailey | Rawhide | 1984 | 2:42:20 |
| 60-64 | Paul Hughes | Long View | 2020 | 2:55:44 |
| 65-69 | Paul Hughes | Colorado | 2023 | 2:58:43 |
| 70 and over | Steve Parker | REVEL Rockies | 2022 | 3:41:02 |
Female
| Age Group | Athlete | Race | Year | Time |
|---|---|---|---|---|
| 19 and Under | Eowyn Dalbec | REVEL Rockies | 2022 | 3:05:35 |
| 20-24 | Kate Bricker | Rawhide | 1983 | 2:49:36 |
| 25-29 | Masako Chiba | Boulder Backroads | 2004 | 2:41:05 |
| 30-34 | Mizuho Nasukawa | Rock ‘n’ Roll | 2012 | 2:37:05 |
| 35-39 | Nuta Olaru | Denver | 2008 | 2:42:18 |
| 40-44 | Martha Tenorio | Denver | 2007 | 2:46:41 |
| 45-49 | Mercedes Gil | Colorado | 2008 | 3:00:41 |
| 50-54 | Lin Lascelles | Colfax | 2014 | 3:07:10 |
| 55-59 | Julie Draguns | REVEL Rockies | 2023 | 3:16:28 |
| 60-64 | Riva Johnson | REVEL Rockies | 2023 | 3:25:27 |
| 65-69 | Margareta Nuytinck | REVEL Rockies | 2018 | 3:41:46 |
| 70 and over | Myra Rhodes | Colorado | 2006 | 4:09:12 |
Half Marathon Records
Male
| Age Group | Athlete | Race | Year | Time |
|---|---|---|---|---|
| 19 and Under | Awet Beraki | ADT | 2017 | 1:10:09 |
| 20-24 | Jon Sinclair | Rawhide | 1982 | 1:04:06 |
| 25-29 | Mario Macias | Georgetown to Idaho Springs | 2011 | 1:02:50 |
| 30-34 | Craig Holm | Rawhide | 1984 | 1:04:03 |
| 35-39 | Stanley Boen | Mt Sneffels | 2015 | 1:06:26 |
| 40-44 | Anthony Bruns | Fall Equinox | 2022 | 1:08:39 |
| 45-49 | Bernie Boettcher | Slacker | 2010 | 1:12:02 |
| 50-54 | Bob Weiner | Georgetown to Idaho Springs | 2015 | 1:12:19 |
| 55-59 | Roger Sayre | Fall Equinox | 2017 | 1:18:40 |
| 60-64 | Roger Sayre | Fall Equinox | 2018 | 1:19:47 |
| 65-69 | Paul Hughes | Fall Equinox | 2022 | 1:20:25 |
| 70 and over | Jose Cardenas | Boulder Backroads | 2004 | 1:33:48 |
Female
| Age Group | Athlete | Race | Year | Time |
|---|---|---|---|---|
| 19 and Under | Azusa Sumi | Boulder Backroads | 2015 | 1:15:09 |
| 20-24 | Catherine Mwanzau | Boulderthon | 2023 | 1:14:22 |
| 25-29 | Maureen Custy | Rawhide | 1984 | 1:14:08 |
| 30-34 | Biruktayit Degefa | Colfax | 2021 | 1:11:49 |
| 35-39 | Sara Vaughn | Fall Equinox | 2023 | 1:10:54 |
| 40-44 | Joanna Zeiger | REVEL Rockies | 2014 | 1:14:03 |
| 45-49 | Colleen De Reuck | Crossroads | 2010 | 1:19:45 |
| 50-54 | Colleen De Reuck | Platte River | 2015 | 1:21:17 |
| 55-59 | Susan Loken | REVEL Rockies | 2022 | 1:26:46 |
| 60-64 | Mercedes Gil | Fall Equinox | 2022 | 1:36:09 |
| 65-69 | Abigail Wade | Slacker | 2022 | 1:42:10 |
| 70 and over | Debbie Clark | Fall Equinox | 2022 | 1:45:13 |
These records are copyrighted by Colorado Runner LLC. Any reproduction without the express written consent of Colorado Runner LLC is prohibited.