Rick Sperko
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Born : 1970
Cat. M55 Ultrarunner since 2013
18
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
33
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 States72,8%
Rank quotient ?This runner's calculation uses 18 eligible race(s): Σ(rank − 1) = 1 536; Σ finishers = 2 110. 1 536 / 2 110 × 100 = 72.80%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed18
Km — ultra races1 373 km
> 100 km1
> 160 km1
Longest race160,9 km
23rd Kettle Moraine 100 Mile Endurance Run — 2/6/2018
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
HISTORY
18 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 2/6/2018 | 23rd Kettle Moraine 100 Mile Endurance Run | 160,93 | ×4 |
| ✓ 2 | 18/10/2024 | 7th Mines of Spain 100 km Race | 100,00 | ×3 |
| ✓ 3 | 11/6/2022 | 27th Kettle Moraine 100 km Endurance Run | 100,00 | ×3 |
| ✓ 4 | 3/6/2017 | 22nd Kettle Moraine 100 km Endurance Run | 100,00 | ×3 |
| ✓ 5 | 13/5/2023 | 42th Ice Age Trail 50 Mile Run | 80,47 | ×2 |
| ✓ 6 | 29/5/2021 | 1st Sugar Badger 50 Mile Race | 80,47 | ×2 |
| ✓ 7 | 11/10/2020 | 34th Glacial Trail 50 Mile Race | 80,47 | ×2 |
| ✓ 8 | 12/5/2018 | 37th Ice Age Trail 50 Mile Run | 80,47 | ×2 |
| ✓ 9 | 17/9/2016 | 9th Endurance Challenge - Wisconsin Trail 50 Miles | 80,47 | ×2 |
| ✓ 10 | 13/11/2021 | 9th tBunk Endurance Challenge 50 Mile | 79,82 | ×2 |
| ✓ 11 | 9/11/2019 | 7th tBunk Endurance Challenge 50 Mile | 79,82 | ×2 |
| ✓ 12 | 12/10/2025 | 39th Glacial Trail 50 km Race | 50,00 | ×1 |
| ✓ 13 | 5/2/2022 | 34th John Dick Memorial 50K | 50,00 | ×1 |
| ✓ 14 | 4/2/2017 | 29th John Dick Memorial 50K | 50,00 | ×1 |
| ✓ 15 | 22/10/2016 | 9th Surf the Murph 50 km Run | 50,00 | ×1 |
| ✓ 16 | 10/5/2014 | 33rd Ice Age Trail 50 km Run | 50,00 | ×1 |
| ✓ 17 | 13/10/2013 | 27th Glacial Trail 50 km Race | 50,00 | ×1 |
| ✓ 18 | 11/5/2013 | 32nd Ice Age Trail 50 km Run | 50,00 | ×1 |