Alexander Bollfrass
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Born : 1984
Cat. M40 Ultrarunner since 2009
15
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
3
Countries visited ?
France
SwitzerlandUnited States
FranceSwitzerlandUnited States9,0%
Rank quotient ?This runner's calculation uses 15 eligible race(s): Σ(rank − 1) = 489; Σ finishers = 5 416. 489 / 5 416 × 100 = 9.03%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed15
Km — ultra races1 349 km
> 100 km3
> 160 km1
Longest race160,9 km
5th Headlands Hundred 100 Mile Endurance Run — 6/8/2011
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road7,4%
Trail92,6%
Wins & podiums (ultra)
🏆 Win1
🏆 Win M1
🏅 Top 35
🏅 Top 3 M5
Longest winning streak1
Current streak0
HISTORY
15 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2023 | ||||
| 28.01 | 50mi | 6th Arches Ultra 50 Mile Race |
11:22:22 h | 51 |
| 2021 | ||||
| 06.11 | 53mi | 12th Deadman Peaks 53 Mile Trail Run |
10:12:50 h | 2 🥈 |
| 23.10 | 50mi | 8th Sean O'Brien 50 Mile Trail Race |
9:23:46 h | 3 🥉 |
| 2019 | ||||
| 16.08 | 160km | 3. Swiss Alps 100 - 100mi |
34:11:40 h | 12 |
| 06.07 | 73km | 11ème Trail Verbier St Bernard - La Traversée |
15:03:33 h | 185 |
| 2014 | ||||
| 20.09 | 50mi | 7th Virgil Crest 50 Mile Ultra |
10:34:00 h | 13 |
| 26.07 | 52mi | 5th Grand Mesa 50 Mile Trail Race |
8:00:27 h | 1 🏆 |
| 2013 | ||||
| 21.09 | 50mi | 6th Virgil Crest 50 Mile Ultra |
9:59:00 h | 8 |
| 24.08 | 50km | 4th Burning Man Ultramarathon |
4:10:19 h | 3 🥉 |
| 2012 | ||||
| 31.08 | 103.4km trail race | 10ème Ultra Trail Tour du Mont Blanc (UTMB) |
15:23:01 h | 136 |
| 2011 | ||||
| 24.09 | 100km | 1st Ultra Race of Champions (UROC) 100K |
10:49:34 h | 13 |
| 06.08 | 100mi | 5th Headlands Hundred 100 Mile Endurance Run |
20:14:33 h | 2 🥈 |
| 2010 | ||||
| 20.11 | 50mi | 48th JFK 50 Mile |
6:54:00 h | 23 |
| 16.10 | 50km | 2nd Mountain Madness 50K |
6:04:41 h | 11 |
| 2009 | ||||
| 21.11 | 50mi | 47th JFK 50 Mile |
7:25:09 h | 41 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 6/8/2011 | 5th Headlands Hundred 100 Mile Endurance Run | 160,93 | ×4 |
| ✓ 2 | 16/8/2019 | 3. Swiss Alps 100 - 100mi | 160,00 | ×4 |
| ✓ 3 | 31/8/2012 | 10ème Ultra Trail Tour du Mont Blanc (UTMB) (FRA) | 103,40 | ×3 |
| ✓ 4 | 24/9/2011 | 1st Ultra Race of Champions (UROC) 100K | 100,00 | ×3 |
| ✓ 5 | 6/11/2021 | 12th Deadman Peaks 53 Mile Trail Run | 85,30 | ×2 |
| ✓ 6 | 26/7/2014 | 5th Grand Mesa 50 Mile Trail Race | 83,69 | ×2 |
| ✓ 7 | 28/1/2023 | 6th Arches Ultra 50 Mile Race | 80,47 | ×2 |
| ✓ 8 | 23/10/2021 | 8th Sean O'Brien 50 Mile Trail Race | 80,47 | ×2 |
| ✓ 9 | 20/9/2014 | 7th Virgil Crest 50 Mile Ultra | 80,47 | ×2 |
| ✓ 10 | 21/9/2013 | 6th Virgil Crest 50 Mile Ultra | 80,47 | ×2 |
| ✓ 11 | 20/11/2010 | 48th JFK 50 Mile | 80,47 | ×2 |
| ✓ 12 | 21/11/2009 | 47th JFK 50 Mile | 80,47 | ×2 |
| ✓ 13 | 6/7/2019 | 11ème Trail Verbier St Bernard - La Traversée | 73,00 | ×2 |
| ✓ 14 | 24/8/2013 | 4th Burning Man Ultramarathon | 50,00 | ×1 |
| ✓ 15 | 16/10/2010 | 2nd Mountain Madness 50K | 50,00 | ×1 |