Ron Parks

Born : 1946 Cat. M80 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

23,8%

Rank quotient ?This runner's calculation uses 6 eligible race(s): Σ(rank − 1) = 281; Σ finishers = 1 179. 281 / 1 179 × 100 = 23.83%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed6

Km — ultra races601 km

> 100 km2

> 160 km1

Longest race160,9 km

14th Western States 100 Mile Endurance Run — 27/6/1987

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Trail100,0%

Records

50 km4h25'23 50 mi7h50'42 100 mi23h53'33

HISTORY

6 race(s)

Date		Race	Perf.	Rk
1987
27.06	100mi	14th Western States 100 Mile Endurance Run	23:53:33 h	67
1986
16.11	50mi	3rd San Juan Trail 50 Mile	7:50:42 h	10
1983
08.10	48.6mi	Cow Mountain Planet Earth Run	6:54:08 h	4
1982
01.08	50km	1st Skyline 50k Endurance Run	4:25:23 h	51
18.04	50mi	3rd American River 50 Mile Endurance Run	8:15:02 h	56
1981
27.06	93.5mi	8th Western States 100 Mile Endurance Run	26:51:00 h	99

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	27/6/1987	14th Western States 100 Mile Endurance Run	160,93	×6
✓ 2	27/6/1981	8th Western States 100 Mile Endurance Run	150,47	×6
✓ 3	16/11/1986	3rd San Juan Trail 50 Mile	80,47	×3
✓ 4	18/4/1982	3rd American River 50 Mile Endurance Run	80,47	×3
✓ 5	8/10/1983	Cow Mountain Planet Earth Run	78,21	×3
✓ 6	1/8/1982	1st Skyline 50k Endurance Run	50,00	×2