Mark Canfield
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.
10
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
25
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
51,2%
Rank quotient ?This runner's calculation uses 10 eligible race(s): Σ(rank − 1) = 267; Σ finishers = 521. 267 / 521 × 100 = 51.25%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed10
Km — ultra races706 km
> 100 km1
> 160 km1
> 24h1
Longest race160,9 km
14th Keys100 Ultra-Marathons 100mi — 21/5/2022
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road50,5%
Trail49,5%
Wins & podiums (ultra)
🏆 Win1
🏆 Win M2
🏅 Top 32
🏅 Top 3 M2
Longest winning streak1
Current streak0
HISTORY
10 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2022 | ||||
| 21.05 | 100mi | 30:53:14 h | 77 | |
| 2019 | ||||
| 18.05 | 50mi | 10:39:38 h | 12 | |
| 09.03 | 50km | 5:16:57 h | 20 | |
| 26.01 | 100km | 14:14:23 h | 1 🏆 | |
| 2018 | ||||
| 27.10 | 32mi | 5:54:32 h | 3 🥉 | |
| 17.02 | 50km | 6:36:04 h | 20 | |
| 2015 | ||||
| 21.02 | 50km | 6:25:18 h | 26 | |
| 2011 | ||||
| 26.03 | 50km | 6:43:26 h | 18 | |
| 2010 | ||||
| 31.12 | 24h | 63.549 km | 39 | |
| 16.10 | 50km | 8:00:26 h | 61 | |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 21/5/2022 | 14th Keys100 Ultra-Marathons 100mi | 160,93 | ×6 |
| ✓ 2 | 26/1/2019 | 5th Florida Skydive Ultra Run - 100 km | 100,00 | ×4 |
| ✓ 3 | 18/5/2019 | 12th Keys100 Ultra-Marathons 50mi | 80,47 | ×3 |
| ✓ 4 | 31/12/2010 | 1st Peanut Island 24 Hour Run | 63,55 | ×2 |
| ✓ 5 | 27/10/2018 | 9th Palm 50 km | 51,50 | ×2 |
| ✓ 6 | 9/3/2019 | 8th Everglades 50 km Ultra Run | 50,00 | ×2 |
| ✓ 7 | 17/2/2018 | 7th Everglades 50 km Ultra Run | 50,00 | ×2 |
| ✓ 8 | 21/2/2015 | 4th Everglades 50 km Ultra Run | 50,00 | ×2 |
| ✓ 9 | 26/3/2011 | 3rd Palm 50 km | 50,00 | ×2 |
| ✓ 10 | 16/10/2010 | 1st Endurance Challenge - Georgia Trail 50 km | 50,00 | ×2 |