John Crowther
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Born : 1968
Cat. M55 Ultrarunner since 2011
17
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
1
Countries visited ?United States
United States83,4%
Rank quotient ?This runner's calculation uses 17 eligible race(s): Σ(rank − 1) = 2 119; Σ finishers = 2 542. 2 119 / 2 542 × 100 = 83.36%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed17
Km — ultra races876 km
Longest race80,5 km
3rd Dead Horse 50 Mile Race — 18/11/2017
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
Records
HISTORY
17 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2026 | ||||
| 15.08 | 31.5mi | 25th Tamalpa Headlands 50K |
8:11:53 h | 211 |
| 02.05 | 50km | 31st McDonald Forest 50K Trail Run |
8:58:19 h | 206 |
| 2025 | ||||
| 04.10 | 50km | 12h Perpetua Coast (Oregon Coast) 50k |
7:58:17 h | 112 |
| 2023 | ||||
| 05.08 | 50km | 11th Volcanic 50 |
10:58:27 h | 181 |
| 2022 | ||||
| 18.06 | 50km | 9th Headwaters Trail Run 50K |
9:59:29 h | 34 |
| 2021 | ||||
| 27.11 | 28mi | 36th Quad Dipsea Trail Run |
8:07:34 h | 227 |
| 15.05 | 50km | 8th Mary's Peak 50k Ultra Trail Race |
8:15:49 h | 58 |
| 2018 | ||||
| 08.09 | 50km | 5th Devil on the Divide Ultra |
9:29:24 h | 107 |
| 2017 | ||||
| 18.11 | 50mi | 3rd Dead Horse 50 Mile Race |
12:06:08 h | 108 |
| 21.10 | 55km | 4th Indian Creek Fifties - 55 km |
8:47:00 h | 52 |
| 25.03 | 50km | 4th Behind the Rocks 50km Race |
8:00:01 h | 133 |
| 2016 | ||||
| 11.06 | 28mi | 2nd South Park Trail Marathon |
7:57:51 h | 57 |
| 2014 | ||||
| 24.05 | 50km | 9th Jemez Mountain 50km Trail Run |
9:27:16 h | 119 |
| 19.04 | 50km | 11th Desert Rats Trail Running Festival 50 km |
7:50:30 h | 39 |
| 2013 | ||||
| 01.06 | 50km | 5th Golden Gate Dirty 30 |
9:19:52 h | 239 |
| 2012 | ||||
| 02.06 | 50km | 4th Golden Gate Dirty 30 |
7:49:45 h | 188 |
| 2011 | ||||
| 28.05 | 50km | 4th Sage Burner Trail Run |
8:01:15 h | 65 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 18/11/2017 | 3rd Dead Horse 50 Mile Race | 80,47 | ×3 |
| ✓ 2 | 21/10/2017 | 4th Indian Creek Fifties - 55 km | 55,00 | ×2 |
| ✓ 3 | 15/8/2026 | 25th Tamalpa Headlands 50K | 50,69 | ×2 |
| ✓ 4 | 2/5/2026 | 31st McDonald Forest 50K Trail Run | 50,00 | ×2 |
| ✓ 5 | 4/10/2025 | 12h Perpetua Coast (Oregon Coast) 50k | 50,00 | ×2 |
| ✓ 6 | 5/8/2023 | 11th Volcanic 50 | 50,00 | ×2 |
| ✓ 7 | 18/6/2022 | 9th Headwaters Trail Run 50K | 50,00 | ×2 |
| ✓ 8 | 15/5/2021 | 8th Mary's Peak 50k Ultra Trail Race | 50,00 | ×2 |
| ✓ 9 | 8/9/2018 | 5th Devil on the Divide Ultra | 50,00 | ×2 |
| ✓ 10 | 25/3/2017 | 4th Behind the Rocks 50km Race | 50,00 | ×2 |
| ✓ 11 | 24/5/2014 | 9th Jemez Mountain 50km Trail Run | 50,00 | ×2 |
| ✓ 12 | 19/4/2014 | 11th Desert Rats Trail Running Festival 50 km | 50,00 | ×2 |
| ✓ 13 | 1/6/2013 | 5th Golden Gate Dirty 30 | 50,00 | ×2 |
| ✓ 14 | 2/6/2012 | 4th Golden Gate Dirty 30 | 50,00 | ×2 |
| ✓ 15 | 28/5/2011 | 4th Sage Burner Trail Run | 50,00 | ×2 |
| ✓ 16 | 27/11/2021 | 36th Quad Dipsea Trail Run | 45,06 | ×1 |
| ✓ 17 | 11/6/2016 | 2nd South Park Trail Marathon | 45,06 | ×1 |