Robert Cox
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Born : 1937
Cat. M85 Ultrarunner since 1982
11
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
1
Countries visited ?United States
United States54,1%
Rank quotient ?This runner's calculation uses 11 eligible race(s): Σ(rank − 1) = 1 042; Σ finishers = 1 927. 1 042 / 1 927 × 100 = 54.07%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed11
Km — ultra races794 km
Longest race80,5 km
10th Avalon Benefit 50-Mile Run — 6/1/1990
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
Records
HISTORY
11 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 1990 | ||||
| 06.01 | 50mi | 10th Avalon Benefit 50-Mile Run |
10:42:16 h | 78 |
| 1988 | ||||
| 08.10 | 50mi | 6th Dick Collins Firetrails 50 Mile |
10:22:12 h | 31 |
| 30.01 | 50mi | 2nd Ledson Marsh 50 Mile |
8:34:20 h | 18 |
| 09.01 | 50mi | 8th Avalon Benefit 50-Mile Run |
11:45:22 h | 71 |
| 1987 | ||||
| 10.10 | 50mi | 5th Dick Collins Firetrails 50 Mile |
10:53:50 h | 39 |
| 1985 | ||||
| 04.08 | 50km | 4th Skyline 50k Endurance Run |
6:48:12 h | 227 |
| 05.01 | 50mi | 5th Avalon Benefit 50-Mile Run |
11:41:20 h | 54 |
| 1984 | ||||
| 05.08 | 50km | 3rd Skyline 50k Endurance Run |
6:25:48 h | 206 |
| 15.04 | 50mi | 5th American River 50 Mile Endurance Run |
8:26:10 h | 95 |
| 1983 | ||||
| 17.04 | 50mi | 4th American River 50 Mile Endurance Run |
8:51:41 h | 179 |
| 1982 | ||||
| 01.08 | 50km | 1st Skyline 50k Endurance Run |
4:27:01 h | 55 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 6/1/1990 | 10th Avalon Benefit 50-Mile Run | 80,47 | ×3 |
| ✓ 2 | 8/10/1988 | 6th Dick Collins Firetrails 50 Mile | 80,47 | ×3 |
| ✓ 3 | 30/1/1988 | 2nd Ledson Marsh 50 Mile | 80,47 | ×3 |
| ✓ 4 | 9/1/1988 | 8th Avalon Benefit 50-Mile Run | 80,47 | ×3 |
| ✓ 5 | 10/10/1987 | 5th Dick Collins Firetrails 50 Mile | 80,47 | ×3 |
| ✓ 6 | 5/1/1985 | 5th Avalon Benefit 50-Mile Run | 80,47 | ×3 |
| ✓ 7 | 15/4/1984 | 5th American River 50 Mile Endurance Run | 80,47 | ×3 |
| ✓ 8 | 17/4/1983 | 4th American River 50 Mile Endurance Run | 80,47 | ×3 |
| ✓ 9 | 4/8/1985 | 4th Skyline 50k Endurance Run | 50,00 | ×1 |
| ✓ 10 | 5/8/1984 | 3rd Skyline 50k Endurance Run | 50,00 | ×1 |
| ✓ 11 | 1/8/1982 | 1st Skyline 50k Endurance Run | 50,00 | ×1 |