John Sylvester

Born : 1967 Cat. M55 Ultrarunner since 2008

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

64,0%

Rank quotient ?This runner's calculation uses 14 eligible race(s): Σ(rank − 1) = 1 345; Σ finishers = 2 100. 1 345 / 2 100 × 100 = 64.05%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed14

Km — ultra races1 034 km

> 100 km1

> 160 km1

Longest race160,9 km

25th Superior Fall Trail Races 100 Mile — 11/9/2015

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Trail100,0%

Records

50 km6h36'42 100 km16h15'00 50 mi11h17'32 100 mi34h00'47

HISTORY

14 race(s)

Date		Race	Perf.	Rk
2015
11.09	100mi	25th Superior Fall Trail Races 100 Mile	34:00:47 h	95
20.06	40mi	13th Highlands Sky 40M Trail Run	10:53:20 h	105
2014
13.07	50mi	7th Leadville Silver Rush 50 Mile Run	12:26:41 h	290
28.06	50km	4th Hell Hath No Hurry 50 km	8:21:03 h	11
14.06	40mi	12th Highlands Sky 40M Trail Run	10:53:42 h	121
2013
15.06	40mi	11th Highlands Sky 40M Trail Run	10:10:23 h	105
08.06	50mi	1st Cayuga Trails 50 Mile Race	12:29:00 h	102
2012
03.03	100km	1st Double Top 100 km	16:15:00 h	13
2010
19.06	40mi	8th Highlands Sky 40M Trail Run	10:14:07 h	106
2009
20.06	40mi	7th Highlands Sky 40M Trail Run	9:36:35 h	72
25.04	50km	9th Promise Land 50K++	7:28:41 h	102
14.03	60km	6th Land Between The Lakes 60 km Trail Run	7:56:05 h	43
2008
10.05	50mi	27th Ice Age Trail 50 Mile Run	11:17:32 h	173
13.04	50km	1st Harbison Forest 50K	6:36:42 h	21

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	11/9/2015	25th Superior Fall Trail Races 100 Mile	160,93	×5
✓ 2	3/3/2012	1st Double Top 100 km	100,00	×3
✓ 3	13/7/2014	7th Leadville Silver Rush 50 Mile Run	80,47	×2
✓ 4	8/6/2013	1st Cayuga Trails 50 Mile Race	80,47	×2
✓ 5	10/5/2008	27th Ice Age Trail 50 Mile Run	80,47	×2
✓ 6	20/6/2015	13th Highlands Sky 40M Trail Run	64,37	×2
✓ 7	14/6/2014	12th Highlands Sky 40M Trail Run	64,37	×2
✓ 8	15/6/2013	11th Highlands Sky 40M Trail Run	64,37	×2
✓ 9	19/6/2010	8th Highlands Sky 40M Trail Run	64,37	×2
✓ 10	20/6/2009	7th Highlands Sky 40M Trail Run	64,37	×2
✓ 11	14/3/2009	6th Land Between The Lakes 60 km Trail Run	60,00	×2
✓ 12	28/6/2014	4th Hell Hath No Hurry 50 km	50,00	×1
✓ 13	25/4/2009	9th Promise Land 50K++	50,00	×1
✓ 14	13/4/2008	1st Harbison Forest 50K	50,00	×1