Irving Weston

Born : 1931 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

57,5%

Rank quotient ?This runner's calculation uses 14 eligible race(s): Σ(rank − 1) = 980; Σ finishers = 1 703. 980 / 1 703 × 100 = 57.55%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed14

Km — ultra races1 998 km

> 100 km6

> 160 km5

> 200 km1

> 24h4

> 48h1

Longest race531,5 km

1st Rocky Mountain Six-Day — 27/12/1984

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Road49,2%

Trail24,2%

?26,6%

Records

100 km10h35'49 50 mi7h49'33 100 mi26h52'18 24 h174,00 km 6 d531,49 km

HISTORY

14 race(s) · 6 split(s) nested

Date		Race	Perf.	Rk
1991
19.01	50mi	Jackson Five-O	8:26:34 h	44
1990
21.07	100mi	2nd Vermont 100 Mile Endurance Race	26:52:18 h	102
1988
25.06	100mi	15th Western States 100 Mile Endurance Run	29:20:43 h	232
10.04	50mi	9th American River 50 Mile Endurance Run	9:38:43 h	115
1985
13.10	50mi	AMJA 50 Mile Ultramarathon	7:49:56 h	56
31.08	24h	4th Labor Day 24 Hour Run	169.210 km	10
1984
27.12	6d	1st Rocky Mountain Six-Day	531.485 km	16
27.12	48h	1st Rocky Mountain Six-Day - 48h Split	238.585 km	12
14.10	50mi	AMJA 50 Mile Ultramarathon	7:49:33 h	71
20.05	50mi	3rd Ice Age Trail 50 Mile Run	9:41:30 h	52
14.04	24h	Cornbelt Running Club 24 Hour Run	138.573 km	14
14.04	50mi	Cornbelt Running Club 24 Hour Run - 50mi Split	9:21:35 h	17
1983
08.10	24h	Nick Marshall Track Run	174.000 km	4
08.10	50km	Nick Marshall Track Run - 50km Split	5:05:00 h	10
08.10	50mi	Nick Marshall Track Run - 50mi Split	8:52:00 h	8
08.10	100km	Nick Marshall Track Run - 100km Split	11:35:50 h	6
08.10	100mi	Nick Marshall Track Run - 100mi Split	21:21:59 h	4
1982
03.10	50mi	AMJA 50 Mile Ultramarathon	8:15:59 h	126
03.10	100km	AMJA 100 km Ultramarathon	10:35:49 h	28
1981
04.10	50mi	AMJA 50 Mile Ultramarathon	8:28:08 h	124

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	27/12/1984	1st Rocky Mountain Six-Day	531,49	×13
✓ 2	8/10/1983	Nick Marshall Track Run	174,00	×4
✓ 3	31/8/1985	4th Labor Day 24 Hour Run	169,21	×4
✓ 4	21/7/1990	2nd Vermont 100 Mile Endurance Race	160,93	×4
✓ 5	25/6/1988	15th Western States 100 Mile Endurance Run	160,93	×4
✓ 6	14/4/1984	Cornbelt Running Club 24 Hour Run	138,57	×3
✓ 7	3/10/1982	AMJA 100 km Ultramarathon	100,00	×2
✓ 8	19/1/1991	Jackson Five-O	80,47	×2
✓ 9	10/4/1988	9th American River 50 Mile Endurance Run	80,47	×2
✓ 10	13/10/1985	AMJA 50 Mile Ultramarathon	80,47	×2
✓ 11	14/10/1984	AMJA 50 Mile Ultramarathon	80,47	×2
✓ 12	20/5/1984	3rd Ice Age Trail 50 Mile Run	80,47	×2
✓ 13	4/10/1981	AMJA 50 Mile Ultramarathon	80,47	×2