Charles Fredrick Joslyn
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 : 1984
Cat. M40 Ultrarunner since 2014
18
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
31
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 ?
QatarUnited States
QatarUnited States8,9%
Rank quotient ?This runner's calculation uses 18 eligible race(s): Σ(rank − 1) = 242; Σ finishers = 2 730. 242 / 2 730 × 100 = 8.86%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed18
Km — ultra races1 265 km
> 100 km1
> 160 km1
Longest race160,9 km
1st Devil Dog Ultra 100 Mile Race — 17/12/2016
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road26,7%
Trail73,3%
Wins & podiums (ultra)
🏆 Win3
🏆 Win M3
🏅 Top 34
🏅 Top 3 M4
Longest winning streak1
Current streak0
HISTORY
18 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 17/12/2016 | 1st Devil Dog Ultra 100 Mile Race | 160,93 | ×5 |
| ✓ 2 | 1/12/2018 | 3rd Devil Dog Ultra 100 km Race | 100,00 | ×3 |
| ✓ 3 | 2/12/2017 | 2nd Devil Dog Ultra 100 km Race | 100,00 | ×3 |
| ✓ 4 | 8/10/2017 | 18th Tussey Mountainback 50 Miler | 80,47 | ×2 |
| ✓ 5 | 4/6/2016 | 4th Cayuga Trails 50 Mile Race | 80,47 | ×2 |
| ✓ 6 | 21/11/2015 | 53rd JFK 50 Mile | 80,47 | ×2 |
| ✓ 7 | 31/5/2015 | 3rd Cayuga Trails 50 Mile Race | 80,47 | ×2 |
| ✓ 8 | 10/5/2014 | 33rd Ice Age Trail 50 Mile Run | 80,47 | ×2 |
| ✓ 9 | 24/5/2025 | 4th Bubbletown What the Duck Ultra | 57,10 | ×1 |
| ✓ 10 | 29/4/2018 | 9th Ironmasters Challenge 50k Ultra | 50,00 | ×1 |
| ✓ 11 | 24/3/2018 | 30th The HAT Run 50K | 50,00 | ×1 |
| ✓ 12 | 30/4/2017 | 8th Ironmasters Challenge 50k Ultra | 50,00 | ×1 |
| ✓ 13 | 5/3/2017 | 15th Caumsett Park 50K Lloyd Neck - Championships | 50,00 | ×1 |
| ✓ 14 | 11/11/2016 | 2nd IAU 50km WC Doha | 50,00 | ×1 |
| ✓ 15 | 6/3/2016 | 14th Caumsett Park 50K Lloyd Neck - Championships | 50,00 | ×1 |
| ✓ 16 | 25/4/2015 | 6th Ironmasters Challenge 50k Ultra | 50,00 | ×1 |
| ✓ 17 | 1/3/2015 | 13th Caumsett Park 50K Lloyd Neck - Championships | 50,00 | ×1 |
| ✓ 18 | 1/8/2015 | 2nd On The Rocks Trail Run | 45,00 | ×1 |