Colin Johnson
External sources
Loading FFA
Loading MV
FFA diagnostics
Run “Search / refresh FFA” to see each season, HTTP response, candidate and DUV comparison.
MarathonView diagnostics
Run “Refresh MV” to see login, session validation and parser status.
Cached locally. Empty refreshes never erase the last valid snapshot.
Born : 1988
Cat. M35 Ultrarunner since 2012
9
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
25
DUV-index+ ?Largest integer N such that the race distances provide at least N complete segments of N km in total. A single long race may therefore contribute several segments. See the DUV-Index tab for the detailed calculation. calculation details
2
Countries visited ?
ThailandUnited States
ThailandUnited States41,6%
Rank quotient ?This runner's calculation uses 9 eligible race(s): Σ(rank − 1) = 396; Σ finishers = 952. 396 / 952 × 100 = 41.60%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed9
Km — ultra races676 km
> 100 km2
> 160 km1
> 24h1
Longest race160,9 km
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road23,0%
Trail77,0%
HISTORY
9 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2024 | ||||
| 30.11 | 50km | 4th Squatchy Leftovers 50km Trail Race |
4:48:01 h | 8 |
| 2023 | ||||
| 15.09 | 100mi | 17th Run Rabbit Run 100 Mile UltraMarathon - Tortoises Run |
32:48:23 h | 155 |
| 2022 | ||||
| 07.05 | 50mi | 11th Quad Rock 50 Mile |
13:00:15 h | 57 |
| 16.04 | 50km | 8th Rattler Trail Race 50K |
6:00:59 h | 14 |
| 2021 | ||||
| 25.09 | 50km | 1st West Line Winder 50 km Race |
6:26:22 h | 22 |
| 2015 | ||||
| 07.11 | 24h | 4th Relentless Chiang Mai 24-Hour-Run |
105.560 km | 6 |
| 2014 | ||||
| 18.10 | 79km | 1st TU100 Thailand Ultramarathon |
14:28:19 h | 12 |
| 08.02 | 50km | 3rd The North Face 100 Thailand - 50 km |
7:58:01 h | 99 |
| 2012 | ||||
| 28.09 | 50km | 4th Mountain Madness 50K |
6:48:07 h | 32 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 15/9/2023 | 17th Run Rabbit Run 100 Mile UltraMarathon - Tortoises Run | 160,93 | ×6 |
| ✓ 2 | 7/11/2015 | 4th Relentless Chiang Mai 24-Hour-Run | 105,56 | ×4 |
| ✓ 3 | 7/5/2022 | 11th Quad Rock 50 Mile | 80,47 | ×3 |
| ✓ 4 | 18/10/2014 | 1st TU100 Thailand Ultramarathon | 79,00 | ×3 |
| ✓ 5 | 30/11/2024 | 4th Squatchy Leftovers 50km Trail Race | 50,00 | ×2 |
| ✓ 6 | 16/4/2022 | 8th Rattler Trail Race 50K | 50,00 | ×2 |
| ✓ 7 | 25/9/2021 | 1st West Line Winder 50 km Race | 50,00 | ×2 |
| ✓ 8 | 8/2/2014 | 3rd The North Face 100 Thailand - 50 km | 50,00 | ×2 |
| ✓ 9 | 28/9/2012 | 4th Mountain Madness 50K | 50,00 | ×2 |