John Szilezy

Born : 1975 Cat. M50 Ultrarunner since 2013

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

78,4%

Rank quotient ?This runner's calculation uses 12 eligible race(s): Σ(rank − 1) = 413; Σ finishers = 527. 413 / 527 × 100 = 78.37%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed12

Km — ultra races1 582 km

> 100 km9

> 160 km8

> 24h10

> 48h9

Longest race162,5 km

17th 3 Days at the Fair 72 Hour Race — 15/5/2025

Km per year (ultra races)

163

2022

163

2023

163

2024

163

2025

2026

Race types (share of distance)

Road100,0%

Records

12 h64,37 km 24 h48,28 km 48 h120,70 km 6 d162,54 km

HISTORY

12 race(s) · 2 split(s) nested

Date		Race	Perf.	Rk
2025
15.05	72h	17th 3 Days at the Fair 72 Hour Race	162.543 km	24
2024
16.05	72h	16th 3 Days at the Fair 72 Hour Race	162.543 km	32
2023
11.05	72h	15th 3 Days at the Fair 72 Hour Race	162.543 km	41
2022
12.05	72h	14th 3 Days at the Fair 72 Hour Race	162.543 km	39
2021
13.05	72h	13th 3 Days at the Fair 72 Hour Race	162.543 km	45
2019
16.05	72h	11th 3 Days at the Fair 72 Hour Race	162.543 km	34
2018
17.05	72h	10th 3 Days at the Fair 72 Hour Race	162.543 km	34
17.05	48h	10th 3 Days at the Fair 72 Hour Race - 48h Split	125.528 km	29
2017
15.05	6d	9th 3 Days at the Fair 6 Day Race	162.543 km	39
2016
11.11	12h	4th NJ One Day 12 Hour Race	48.280 km	15
2014
08.11	24h	2nd NJ One Day 24 Hour Race	48.280 km	73
16.05	48h	6th 3 Days at the Fair 48 Hour Race	120.700 km	40
16.05	24h	6th 3 Days at the Fair 48 Hour Race - 24h Split	80.467 km	37
2013
18.05	12h	4th 3 Days at the Fair 12 Hour Race	64.373 km	9

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	15/5/2025	17th 3 Days at the Fair 72 Hour Race	162,54	×4
✓ 2	16/5/2024	16th 3 Days at the Fair 72 Hour Race	162,54	×4
✓ 3	11/5/2023	15th 3 Days at the Fair 72 Hour Race	162,54	×4
✓ 4	12/5/2022	14th 3 Days at the Fair 72 Hour Race	162,54	×4
✓ 5	13/5/2021	13th 3 Days at the Fair 72 Hour Race	162,54	×4
✓ 6	16/5/2019	11th 3 Days at the Fair 72 Hour Race	162,54	×4
✓ 7	17/5/2018	10th 3 Days at the Fair 72 Hour Race	162,54	×4
✓ 8	15/5/2017	9th 3 Days at the Fair 6 Day Race	162,54	×4
✓ 9	16/5/2014	6th 3 Days at the Fair 48 Hour Race	120,70	×3
✓ 10	18/5/2013	4th 3 Days at the Fair 12 Hour Race	64,37	×1
✓ 11	11/11/2016	4th NJ One Day 12 Hour Race	48,28	×1
✓ 12	8/11/2014	2nd NJ One Day 24 Hour Race	48,28	×1