Colleen Fox

Born : 1954 Cat. W70 Ultrarunner since 1983

DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.

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

Countries visited ?

United States

84,4%

Rank quotient ?This runner's calculation uses 10 eligible race(s): Σ(rank − 1) = 1 161; Σ finishers = 1 375. 1 161 / 1 375 × 100 = 84.44%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed10

Km — ultra races871 km

> 100 km2

> 24h1

Longest race142,0 km

Bay Area Striders 24 Hour — 20/7/1984

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Road57,3%

Trail42,7%

Wins & podiums (ultra)

🏆 Win0

🏆 Win F2

🏅 Top 30

🏅 Top 3 F4

Longest winning streak0

Current streak0

Records

50 km6h19'02 50 mi8h19'50 24 h142,02 km

HISTORY

10 race(s)

Date		Race	Perf.	Rk
1985
20.10	50mi	Far Western 50 Mile	8:40:38 h	12
14.04	50mi	6th American River 50 Mile Endurance Run	11:58:25 h	294
09.02	50mi	7th Jed Smith Ultra Classic - 50 Mile Race	8:19:50 h	59
1984
22.09	72mi	9th Lake Tahoe 72 Miler	14:34:08 h	18
05.08	50km	3rd Skyline 50k Endurance Run	6:19:02 h	201
20.07	24h	Bay Area Striders 24 Hour	142.024 km	9
13.05	50mi	California 50 Mile Endurance Run	10:13:22 h	69
11.02	50mi	6th Jed Smith Ultra Classic - 50 Mile Race	8:31:06 h	55
1983
26.12	50mi	2nd Recover From The Holidays Fat Ass 50	10:00:00 h	30
17.04	50mi	4th American River 50 Mile Endurance Run	12:28:38 h	424

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	20/7/1984	Bay Area Striders 24 Hour	142,02	×5
✓ 2	22/9/1984	9th Lake Tahoe 72 Miler	115,87	×4
✓ 3	20/10/1985	Far Western 50 Mile	80,47	×3
✓ 4	14/4/1985	6th American River 50 Mile Endurance Run	80,47	×3
✓ 5	9/2/1985	7th Jed Smith Ultra Classic - 50 Mile Race	80,47	×3
✓ 6	13/5/1984	California 50 Mile Endurance Run	80,47	×3
✓ 7	11/2/1984	6th Jed Smith Ultra Classic - 50 Mile Race	80,47	×3
✓ 8	26/12/1983	2nd Recover From The Holidays Fat Ass 50	80,47	×3
✓ 9	17/4/1983	4th American River 50 Mile Endurance Run	80,47	×3
✓ 10	5/8/1984	3rd Skyline 50k Endurance Run	50,00	×1