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MD
Mason Duncan
MaleColorado1998–2026
13
Total Finishes
4
Different Races
2
States (4%)
1:23:15
PR (6:21/mi)
1:42:09
Average
-0:10:17
Faster (first to last)
Medal House
2021
UTHealth Houston Half Marathon & 10K
1:50:55
#856 overall#660 gender
2019
2025 Aramco Houston Half Marathon Searchable Finish Line Video
2:04:36
#3549 overall
2018
2025 Aramco Houston Half Marathon Searchable Finish Line Video
2:36:41
#7367 overall
2016
Slacker Half Marathon-Relay-4-Mile Races
1:31:39
#25 overall#23 gender
2015
Slacker Half Marathon-Relay-4-Mile Races
1:32:18
#56 overall#48 gender
2011
Slacker Half Marathon-Relay-4-Mile Races
1:23:15
#17 overall#16 gender
2010
Slacker Half Marathon-Relay-4-Mile Races
1:29:37
#58 overall#50 gender
2009
Slacker Half Marathon-Relay-4-Mile Races
1:27:30
#39 overall#34 gender
2008
Slacker Half Marathon-Relay-4-Mile Races
1:34:31
#58 overall#50 gender
2007
Slacker Half Marathon-Relay-4-Mile Races
1:43:17
#81 overall#63 gender
2006
Slacker Half Marathon-Relay-4-Mile Races
1:34:53
#42 overall#35 gender
1998
Georgetown to Idaho Springs Half Marathon
1:44:29
#491 overall#400 gender
Performance Timeline
Complete Race Log
| Year | Race | State | Time | Place |
|---|---|---|---|---|
| 2026 | Slacker Half Marathon-Relay-4-Mile RacesGeorgetown | CO | 1:34:12 | #33 |
| 2021 | UTHealth Houston Half Marathon & 10KHouston | TX | 1:50:55 | #856 |
| 2019 | 2025 Aramco Houston Half Marathon Searchable Finish Line VideoHouston | TX | 2:04:36 | #3549 |
| 2018 | 2025 Aramco Houston Half Marathon Searchable Finish Line VideoHouston | TX | 2:36:41 | #7367 |
| 2016 | Slacker Half Marathon-Relay-4-Mile RacesGeorgetown | CO | 1:31:39 | #25 |
| 2015 | Slacker Half Marathon-Relay-4-Mile RacesGeorgetown | CO | 1:32:18 | #56 |
| 2011 | Slacker Half Marathon-Relay-4-Mile RacesGeorgetown | CO | 1:23:15 | #17 |
| 2010 | Slacker Half Marathon-Relay-4-Mile RacesGeorgetown | CO | 1:29:37 | #58 |
| 2009 | Slacker Half Marathon-Relay-4-Mile RacesGeorgetown | CO | 1:27:30 | #39 |
| 2008 | Slacker Half Marathon-Relay-4-Mile RacesGeorgetown | CO | 1:34:31 | #58 |
| 2007 | Slacker Half Marathon-Relay-4-Mile RacesGeorgetown | CO | 1:43:17 | #81 |
| 2006 | Slacker Half Marathon-Relay-4-Mile RacesGeorgetown | CO | 1:34:53 | #42 |
| 1998 | Georgetown to Idaho Springs Half MarathonUnknown | CO | 1:44:29 | #491 |
States Raced
1 race 2 races 3-4 races 5+ races
State Breakdown
COColorado
10 racesTXTexas
3 races50-State Challenge
2/ 50 states
48 states to go