Larry Davidson

ID 220908

Born : 1947 Cat. M75 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

42,3%

Rank quotient ?This runner's calculation uses 14 eligible race(s): Σ(rank − 1) = 331; Σ finishers = 782. 331 / 782 × 100 = 42.33%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed14

Km — ultra races2 098 km

> 100 km9

> 160 km5

> 200 km2

> 24h4

> 48h2

Longest race504,1 km

5th Edward Payson Weston Six Day Track Race — 17/6/1984

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Road88,5%

Trail11,5%

Records

100 km9h04'25 50 mi7h13'48 100 mi18h34'49 12 h107,83 km 24 h147,66 km 48 h244,46 km 6 d504,13 km

HISTORY

14 race(s) · 3 split(s) nested

Date		Race	Perf.	Rk
1990
22.06	24h	Long Island 24 Hour Ultramarathon	147.657 km	7
1989
30.09	100mi	4th Angeles Crest 100 Mile	32:01:10 h	70
13.05	12h	5th 12 Hour Run Syosset	107.826 km	8
1988
14.05	12h	4th 12 Hour Run Syosset	105.433 km	12
1985
12.04	48h	Ultra-South 48 Hour Run	244.459 km	5
12.04	50mi	Ultra-South 48 Hour Run - 50mi Split	11:38:15 h	8
12.04	100km	Ultra-South 48 Hour Run - 100km Split	14:34:10 h	7
12.04	100mi	Ultra-South 48 Hour Run - 100mi Split	26:37:44 h	7
1984
17.06	6d	5th Edward Payson Weston Six Day Track Race	504.127 km	19
18.03	60km	6th NYRR Knickerbocker 60K	4:59:38 h	30
1983
12.11	100km	4th Great Philadelphia to Atlantic City Road Race	9:04:25 h	9
18.06	100mi	NYRR National TAC 100 Mile Championship	18:34:49 h	21
22.05	50mi	13th Metropolitan 50 Mile Race	7:13:48 h	25
1982
20.11	50mi	20th JFK 50 Mile	8:45:05 h	84
19.06	24h	2nd The Last Annual Rowdy Ultimate 24 Hour Track Race	104.607 km	15
05.06	100mi	NYRR New York Invitational 100 Mile Run	20:33:19 h	20
1981
20.12	50mi	Valley Stream 50 Miler	7:22:07 h	20

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	17/6/1984	5th Edward Payson Weston Six Day Track Race	504,13	×12
✓ 2	12/4/1985	Ultra-South 48 Hour Run	244,46	×5
✓ 3	30/9/1989	4th Angeles Crest 100 Mile	160,93	×3
✓ 4	18/6/1983	NYRR National TAC 100 Mile Championship	160,93	×3
✓ 5	5/6/1982	NYRR New York Invitational 100 Mile Run	160,93	×3
✓ 6	22/6/1990	Long Island 24 Hour Ultramarathon	147,66	×3
✓ 7	13/5/1989	5th 12 Hour Run Syosset	107,83	×2
✓ 8	14/5/1988	4th 12 Hour Run Syosset	105,43	×2
✓ 9	19/6/1982	2nd The Last Annual Rowdy Ultimate 24 Hour Track Race	104,61	×2
✓ 10	12/11/1983	4th Great Philadelphia to Atlantic City Road Race	100,00	×2
✓ 11	22/5/1983	13th Metropolitan 50 Mile Race	80,47	×1
✓ 12	20/11/1982	20th JFK 50 Mile	80,47	×1
✓ 13	20/12/1981	Valley Stream 50 Miler	80,47	×1
✓ 14	18/3/1984	6th NYRR Knickerbocker 60K	60,00	×1