William Luff
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Born : 1959
Cat. M65 Ultrarunner since 2014
15
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
26
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 ?United Kingdom
South Africa
United KingdomSouth Africa65,2%
Rank quotient ?This runner's calculation uses 15 eligible race(s): Σ(rank − 1) = 48 240; Σ finishers = 73 978. 48 240 / 73 978 × 100 = 65.21%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed15
Km — ultra races956 km
Longest race90,0 km
93rd Comrades Marathon - Down Run — 10/6/2018
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road46,2%
Trail53,8%
Records
HISTORY
15 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 10/6/2018 | 93rd Comrades Marathon - Down Run | 90,00 | ×3 |
| ✓ 2 | 29/5/2016 | 91st Comrades Marathon - Down Run | 89,00 | ×3 |
| ✓ 3 | 1/6/2014 | 89th Comrades Marathon - Down Run | 89,00 | ×3 |
| ✓ 4 | 9/6/2019 | 94th Comrades Marathon - Up Run | 87,00 | ×3 |
| ✓ 5 | 31/5/2015 | 90th Comrades Marathon - Up Run | 87,00 | ×3 |
| ✓ 6 | 19/4/2014 | 18th Compton Downland Challenge | 64,37 | ×2 |
| ✓ 7 | 14/7/2018 | The 'Chiltern Ultra Challenge' Intro 50km Ultra | 52,00 | ×2 |
| ✓ 8 | 13/7/2019 | Humanity Direct Chiltern Challenge | 50,00 | ×1 |
| ✓ 9 | 9/3/2019 | Humanity Direct Amersham Ultra | 50,00 | ×1 |
| ✓ 10 | 10/3/2018 | Humanity Direct Amersham Ultra | 50,00 | ×1 |
| ✓ 11 | 19/3/2016 | 5th New Forest 50 km Ultra | 50,00 | ×1 |
| ✓ 12 | 21/3/2015 | 4th New Forest 50 km Ultra | 50,00 | ×1 |
| ✓ 13 | 22/3/2014 | 3rd New Forest 50 km Ultra | 50,00 | ×1 |
| ✓ 14 | 11/7/2015 | Chiltern Challenge Ultra | 49,89 | ×1 |
| ✓ 15 | 7/3/2020 | Humanity Direct Amersham Ultra | 48,00 | ×1 |