Takeshi (石神壮) Ishigami

Born : 1955 Cat. M70 Ultrarunner since 1999

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 ?

Hong Kong

Japan

74,9%

Rank quotient ?This runner's calculation uses 18 eligible race(s): Σ(rank − 1) = 11 336; Σ finishers = 15 136. 11 336 / 15 136 × 100 = 74.89%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed18

Km — ultra races1 760 km

Longest race100,0 km

15th Iwate Ginga 100km Marathon Challenge — 9/6/2019

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Road94,3%

Trail5,7%

Records

100 km12h08'56

HISTORY

18 race(s)

Date		Race	Perf.	Rk
2019
09.06	100km	15th Iwate Ginga 100km Marathon Challenge	13:43:30 h	604
13.01	100km	4th Yakushima Ultramarathon	15:38:24 h	176
2018
24.03	100km	1st Rebel Walker 100	22:34:18 h	336
2017
11.06	100km	13th Iwate Ginga 100km Marathon Challenge	13:45:14 h	1049
2016
16.10	100km	22nd River Shimanto 100km	13:43:49 h	1149
17.01	100km	26th Miyako 100 km Ultramarathon	13:45:58 h	342
2013
20.10	100km	19th River Shimanto 100km	13:42:01 h	903
22.09	100km	23. Akita Nairiku 100km Marathon	12:44:51 h	531
26.05	100km	20th Ebisu-Daikoku 100 km Marathon	13:51:31 h	298
2009
18.10	100km	15th River Shimanto 100km	12:38:26 h	642
2008
19.10	100km	14th River Shimanto 100km	13:23:42 h	733
2007
14.10	100km	13th River Shimanto 100km	13:01:04 h	722
2006
25.06	100km	21. Lake Saroma 100 km Ultramarathon	12:08:56 h	981
2005
16.10	100km	11th River Shimanto 100km	13:25:20 h	814
2004
17.10	100km	10th River Shimanto 100km	13:45:48 h	1052
2002
26.05	100km	9th Ebisu-Daikoku 100 km Marathon	13:58:38 h	96
2001
21.10	100km	8th River Shimanto 100km	13:32:20 h	747
1999
17.10	60km	6th River Shimanto 60km	7:57:36 h	179

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	9/6/2019	15th Iwate Ginga 100km Marathon Challenge	100,00	×2
✓ 2	13/1/2019	4th Yakushima Ultramarathon	100,00	×2
✓ 3	24/3/2018	1st Rebel Walker 100	100,00	×2
✓ 4	11/6/2017	13th Iwate Ginga 100km Marathon Challenge	100,00	×2
✓ 5	16/10/2016	22nd River Shimanto 100km	100,00	×2
✓ 6	17/1/2016	26th Miyako 100 km Ultramarathon	100,00	×2
✓ 7	20/10/2013	19th River Shimanto 100km	100,00	×2
✓ 8	22/9/2013	23. Akita Nairiku 100km Marathon	100,00	×2
✓ 9	26/5/2013	20th Ebisu-Daikoku 100 km Marathon	100,00	×2
✓ 10	18/10/2009	15th River Shimanto 100km	100,00	×2
✓ 11	19/10/2008	14th River Shimanto 100km	100,00	×2
✓ 12	14/10/2007	13th River Shimanto 100km	100,00	×2
✓ 13	25/6/2006	21. Lake Saroma 100 km Ultramarathon	100,00	×2
✓ 14	16/10/2005	11th River Shimanto 100km	100,00	×2
✓ 15	17/10/2004	10th River Shimanto 100km	100,00	×2
✓ 16	26/5/2002	9th Ebisu-Daikoku 100 km Marathon	100,00	×2
✓ 17	21/10/2001	8th River Shimanto 100km	100,00	×2
✓ 18	17/10/1999	6th River Shimanto 60km	60,00	×1