Mark Laub
External sources
Loading FFA
Loading MV
FFA diagnostics
Run “Search / refresh FFA” to see each season, HTTP response, candidate and DUV comparison.
MarathonView diagnostics
Run “Refresh MV” to see login, session validation and parser status.
Cached locally. Empty refreshes never erase the last valid snapshot.
Born : 1948
Cat. M75 Ultrarunner since 1992
20
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
36
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 States74,6%
Rank quotient ?This runner's calculation uses 20 eligible race(s): Σ(rank − 1) = 2 320; Σ finishers = 3 108. 2 320 / 3 108 × 100 = 74.65%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed20
Km — ultra races1 513 km
> 100 km3
> 24h4
Longest race132,9 km
9th FANS 24 Hour Runs — 27/6/1998
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road29,3%
Trail70,7%
HISTORY
20 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 27/6/1998 | 9th FANS 24 Hour Runs | 132,93 | ×3 |
| ✓ 2 | 28/6/1997 | 8th FANS 24 Hour Runs | 119,57 | ×3 |
| ✓ 3 | 26/6/1993 | 4th FANS 24 Hour Runs | 113,94 | ×3 |
| ✓ 4 | 26/7/1997 | 16th Minnesota Voyageur Trail 50 Mile Ultra | 80,47 | ×2 |
| ✓ 5 | 27/7/1996 | 15th Minnesota Voyageur Trail 50 Mile Ultra | 80,47 | ×2 |
| ✓ 6 | 29/7/1995 | 14th Minnesota Voyageur Trail 50 Mile Ultra | 80,47 | ×2 |
| ✓ 7 | 13/5/1995 | 14th Ice Age Trail 50 Mile Run | 80,47 | ×2 |
| ✓ 8 | 1/4/1995 | 16th American River 50 Mile Endurance Run | 80,47 | ×2 |
| ✓ 9 | 7/1/1995 | 15th Avalon Benefit 50-Mile Run | 80,47 | ×2 |
| ✓ 10 | 30/7/1994 | 13th Minnesota Voyageur Trail 50 Mile Ultra | 80,47 | ×2 |
| ✓ 11 | 21/5/1994 | 13th Ice Age Trail 50 Mile Run | 80,47 | ×2 |
| ✓ 12 | 15/5/1993 | 12th Ice Age Trail 50 Mile Run | 80,47 | ×2 |
| ✓ 13 | 26/6/1999 | 10th FANS 24 Hour Runs | 77,44 | ×2 |
| ✓ 14 | 4/7/1998 | 5th Afton Trail Run 50K | 50,00 | ×1 |
| ✓ 15 | 18/4/1998 | 9th Trail Mix Race | 50,00 | ×1 |
| ✓ 16 | 6/9/1997 | 3rd Point Reyes 50K | 50,00 | ×1 |
| ✓ 17 | 8/9/1996 | 2nd Baldy Peaks 50K | 50,00 | ×1 |
| ✓ 18 | 17/4/1993 | 4th Trail Mix Race | 50,00 | ×1 |
| ✓ 19 | 30/5/1992 | 3rd Shadow of the Giants 50K | 50,00 | ×1 |
| ✓ 20 | 25/11/1995 | 11th Quad Dipsea Trail Run | 45,06 | ×1 |