Fred Dunn

Born : 1929 Cat. M95 Ultrarunner since 1981

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

51,6%

Rank quotient ?This runner's calculation uses 16 eligible race(s): Σ(rank − 1) = 1 028; Σ finishers = 1 992. 1 028 / 1 992 × 100 = 51.61%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed16

Km — ultra races1 294 km

> 100 km2

> 160 km1

Longest race160,9 km

13th Western States 100 Mile Endurance Run — 28/6/1986

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Road31,8%

Trail68,2%

Records

50 km5h03'44 100 km12h05'15 50 mi7h56'55 100 mi29h38'34

HISTORY

16 race(s)

Date		Race	Perf.	Rk
1988
15.05	50km	2nd Ohlone 50K Wilderness Run	6:38:31 h	30
16.04	100km	3rd Ruth Anderson Ultra 100km	12:26:45 h	10
1986
11.10	50mi	4th Dick Collins Firetrails 50 Mile	10:31:23 h	24
03.08	50km	5th Skyline 50k Endurance Run	5:35:25 h	41
28.06	100mi	13th Western States 100 Mile Endurance Run	29:38:34 h	203
19.04	100km	1st Ruth Anderson Ultra 100km	12:05:15 h	7
1985
04.08	50km	4th Skyline 50k Endurance Run	5:36:27 h	140
1984
22.10	50mi	2nd Dick Collins Firetrails 50 Mile	10:25:01 h	9
14.10	50mi	AMJA 50 Mile Ultramarathon	7:56:55 h	79
05.08	50km	3rd Skyline 50k Endurance Run	5:37:46 h	143
11.02	50mi	6th Jed Smith Ultra Classic - 50 Mile Race	8:14:48 h	46
1982
01.08	50km	1st Skyline 50k Endurance Run	5:03:44 h	124
1981
29.11	50km	Ultra Challenge 50 km	5:16:46 h	27
27.06	93.5mi	8th Western States 100 Mile Endurance Run	23:28:00 h	59
06.06	50mi	Nugget 50 Mile Trail Run	9:52:32 h	13
12.04	50mi	2nd American River 50 Mile Endurance Run	8:20:32 h	89

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	28/6/1986	13th Western States 100 Mile Endurance Run	160,93	×5
✓ 2	27/6/1981	8th Western States 100 Mile Endurance Run	150,47	×4
✓ 3	16/4/1988	3rd Ruth Anderson Ultra 100km	100,00	×3
✓ 4	19/4/1986	1st Ruth Anderson Ultra 100km	100,00	×3
✓ 5	11/10/1986	4th Dick Collins Firetrails 50 Mile	80,47	×2
✓ 6	22/10/1984	2nd Dick Collins Firetrails 50 Mile	80,47	×2
✓ 7	14/10/1984	AMJA 50 Mile Ultramarathon	80,47	×2
✓ 8	11/2/1984	6th Jed Smith Ultra Classic - 50 Mile Race	80,47	×2
✓ 9	6/6/1981	Nugget 50 Mile Trail Run	80,47	×2
✓ 10	12/4/1981	2nd American River 50 Mile Endurance Run	80,47	×2
✓ 11	15/5/1988	2nd Ohlone 50K Wilderness Run	50,00	×1
✓ 12	3/8/1986	5th Skyline 50k Endurance Run	50,00	×1
✓ 13	4/8/1985	4th Skyline 50k Endurance Run	50,00	×1
✓ 14	5/8/1984	3rd Skyline 50k Endurance Run	50,00	×1
✓ 15	1/8/1982	1st Skyline 50k Endurance Run	50,00	×1
✓ 16	29/11/1981	Ultra Challenge 50 km	50,00	×1