Gladys Spencer
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18
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
83,4%
Rank quotient ?This runner's calculation uses 18 eligible race(s): Σ(rank − 1) = 2 037; Σ finishers = 2 442. 2 037 / 2 442 × 100 = 83.42%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed18
Km — ultra races980 km
Longest race80,5 km
33th Mohican Trail 50 Mile — 4/6/2022
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road18,3%
Trail81,7%
Records
HISTORY
18 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 12.07 | 50km | 13:12:01 h | 22 | |
| 2024 | ||||
| 12.10 | 30mi | 9:42:05 h | 39 | |
| 27.04 | 50km | 9:26:09 h | 40 | |
| 2023 | ||||
| 26.08 | 50km | 9:38:26 h | 13 | |
| 20.05 | 50km | 10:15:49 h | 202 | |
| 08.04 | 50km | 8:53:12 h | 327 | |
| 2022 | ||||
| 04.06 | 50mi | 17:16:26 h | 100 | |
| 14.05 | 8h | 48.650 km | 53 | |
| 26.03 | 30mi | 8:37:32 h | 36 | |
| 2021 | ||||
| 22.05 | 50km | 9:55:24 h | 114 | |
| 27.03 | 30mi | 7:26:08 h | 62 | |
| 2018 | ||||
| 08.09 | 50km | 8:34:20 h | 155 | |
| 2016 | ||||
| 12.11 | 50mi | 13:21:14 h | 281 | |
| 26.03 | 30mi | 7:44:58 h | 84 | |
| 2015 | ||||
| 25.04 | 50mi | 13:06:29 h | 80 | |
| 28.03 | 30mi | 7:39:50 h | 78 | |
| 2013 | ||||
| 10.08 | 8h | 48.457 km | 185 | |
| 2012 | ||||
| 11.08 | 8h | 50.066 km | 184 | |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 4/6/2022 | 33th Mohican Trail 50 Mile | 80,47 | ×3 |
| ✓ 2 | 12/11/2016 | 3rd Tunnel Hill 50 Mile Race | 80,47 | ×3 |
| ✓ 3 | 25/4/2015 | 3rd Indiana Trail 50 Mile | 80,47 | ×3 |
| ✓ 4 | 11/8/2012 | 22nd Howl at the Moon 8 Hour Run | 50,07 | ×2 |
| ✓ 5 | 12/7/2025 | 10th Cry Me A River 50 km Trail Run | 50,00 | ×2 |
| ✓ 6 | 27/4/2024 | 8th Big Turtle 50 km | 50,00 | ×2 |
| ✓ 7 | 26/8/2023 | 1st Midwest States 50 | 50,00 | ×2 |
| ✓ 8 | 20/5/2023 | 9th Yamacraw 50k | 50,00 | ×2 |
| ✓ 9 | 8/4/2023 | 12th The Zion 50 km Run | 50,00 | ×2 |
| ✓ 10 | 22/5/2021 | 7th Yamacraw 50k | 50,00 | ×2 |
| ✓ 11 | 8/9/2018 | 10th Run Woodstock - Freak 50 km | 50,00 | ×2 |
| ✓ 12 | 14/5/2022 | 4th Galena Sky Trail Race 8 Hours | 48,65 | ×1 |
| ✓ 13 | 10/8/2013 | 23rd Howl at the Moon 8 Hour Run | 48,46 | ×1 |
| ✓ 14 | 12/10/2024 | 19th Farmdale Trail Run 30 Mile | 48,28 | ×1 |
| ✓ 15 | 26/3/2022 | 16th Clinton Lake Ultra | 48,28 | ×1 |
| ✓ 16 | 27/3/2021 | 15th Clinton Lake Ultra | 48,28 | ×1 |
| ✓ 17 | 26/3/2016 | 10th Clinton Lake Ultra | 48,28 | ×1 |
| ✓ 18 | 28/3/2015 | 9th Clinton Lake Ultra | 48,28 | ×1 |