Gutdayzke Gutdayzke

Born : 1941 Cat. M85 Ultrarunner since 1984

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

46,4%

Rank quotient ?This runner's calculation uses 19 eligible race(s): Σ(rank − 1) = 644; Σ finishers = 1 389. 644 / 1 389 × 100 = 46.36%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed19

Km — ultra races3 437 km

> 100 km7

> 160 km5

> 200 km3

> 24h8

> 48h6

Longest race645,7 km

12th Edward Payson Weston Six Day Track Race — 16/6/1991

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Road95,3%

Trail4,7%

Wins & podiums (ultra)

🏆 Win0

🏆 Win M0

🏅 Top 32

🏅 Top 3 M2

Longest winning streak0

Current streak0

Records

50 km4h57'50 100 km9h42'45 50 mi7h06'59 12 h56,33 km 24 h161,20 km 48 h144,94 km 6 d645,75 km

HISTORY

19 race(s) · 3 split(s) nested

Date		Race	Perf.	Rk
2007
01.09	12h	3rd Flatlanders 12 Hour Run	56.327 km	29
2005
03.09	12h	1st Flatlanders 12 Hour Run	56.327 km	21
30.04	24h	24th Cornbelt Running Club 24 Hour Run	70.730 km	48
1998
29.12	72h	16th Across the Years, 72h	191.200 km	9
1997
25.04	48h	2nd KUS 48 Hour Ultramarathon	144.937 km	7
1991
16.06	6d	12th Edward Payson Weston Six Day Track Race	645.749 km	2 🥈
1990
17.06	6d	11th Painzone Six Day (Weston Six Day)	619.597 km	3 🥉
1989
18.06	6d	10th Painzone Six Day (Weston Six Day)	600.687 km	7
20.05	50mi	8th Ice Age Trail 50 Mile Run	9:46:38 h	143
1988
25.11	48h	Dallas UltraRunners 48 Hour Track Race	138.403 km	19
02.06	50mi	7th Ice Age Trail 50 Mile Run	10:05:19 h	108
1986
12.10	50km	AMJA 50 km Ultramarathon	4:57:50 h	77
12.10	50mi	AMJA 50 Mile Ultramarathon	8:48:24 h	55
12.10	100km	AMJA 100 km Ultramarathon	11:49:19 h	14
1985
13.10	50mi	AMJA 50 Mile Ultramarathon	7:06:59 h	29
13.10	100km	AMJA 100 km Ultramarathon	9:42:45 h	11
09.03	24h	Ford Groves 24 Hour Run	161.200 km	6
09.03	50mi	Ford Groves 24 Hour Run - 50mi Split	8:57:47 h	4
09.03	100km	Ford Groves 24 Hour Run - 100km Split	13:09:24 h	7
09.03	100mi	Ford Groves 24 Hour Run - 100mi Split	23:36:46 h	7
1984
14.10	50mi	AMJA 50 Mile Ultramarathon	7:35:47 h	60
14.10	100km	AMJA 100 km Ultramarathon	10:05:02 h	15

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	16/6/1991	12th Edward Payson Weston Six Day Track Race	645,75	×12
✓ 2	17/6/1990	11th Painzone Six Day (Weston Six Day)	619,60	×11
✓ 3	18/6/1989	10th Painzone Six Day (Weston Six Day)	600,69	×11
✓ 4	29/12/1998	16th Across the Years, 72h	191,20	×3
✓ 5	9/3/1985	Ford Groves 24 Hour Run	161,20	×3
✓ 6	25/4/1997	2nd KUS 48 Hour Ultramarathon	144,94	×2
✓ 7	25/11/1988	Dallas UltraRunners 48 Hour Track Race	138,40	×2
✓ 8	12/10/1986	AMJA 100 km Ultramarathon	100,00	×1
✓ 9	13/10/1985	AMJA 100 km Ultramarathon	100,00	×1
✓ 10	14/10/1984	AMJA 100 km Ultramarathon	100,00	×1
✓ 11	20/5/1989	8th Ice Age Trail 50 Mile Run	80,47	×1
✓ 12	2/6/1988	7th Ice Age Trail 50 Mile Run	80,47	×1
✓ 13	30/4/2005	24th Cornbelt Running Club 24 Hour Run	70,73	×1
✓ 14	1/9/2007	3rd Flatlanders 12 Hour Run	56,33	×1
✓ 15	3/9/2005	1st Flatlanders 12 Hour Run	56,33	×1