Tatsuo (澤石辰雄) Sawaishi
ID 475372
Born : 1952 Cat. M70 Ultrarunner since 2012 JPN
24
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
44
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
1
Countries visited ?JPNJapan
34,6%
Rank quotient ?This runner's calculation uses 24 eligible race(s): Σ(rank − 1) = 4 882; Σ finishers = 14 113. 4 882 / 14 113 × 100 = 34.59%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed24
Km — ultra races2 207 km
Longest race100,0 km
17th Iwate Ginga 100km Marathon Challenge — 11/6/2023

Km per year (ultra races)

160
2 races
2022
100
1 race
2023
2024
2025
2026

Race types (share of distance)

Road97,7%
Trail2,3%

Records

50 km4h39'47100 km10h40'13

HISTORY

24 race(s)
DateRacePerf.Rk
2023
11.06 100km JPN17th Iwate Ginga 100km Marathon Challenge 14:12:14 h595
2022
12.06 100km JPN16th Iwate Ginga 100km Marathon Challenge 12:47:19 h431
15.05 60km JPN8th Ishigaki Island Ultra Marathon 7:29:25 h85
2021
14.11 47.2km JPN2nd Miyagi Yumeguri Ultra Run 6:19:00 h46
2020
19.01 100km JPN30th Miyako 100 km Ultramarathon 11:32:01 h109
2019
20.10 100km JPN25th River Shimanto 100km 11:45:33 h388
22.09 100km JPN29. Akita Nairiku 100km Marathon 11:33:04 h202
01.09 50km JPN12th OSJ Adatara Trail 50K 14:07:43 h195
09.06 100km JPN15th Iwate Ginga 100km Marathon Challenge 10:59:52 h130
20.01 100km JPN29th Miyako 100 km Ultramarathon 11:38:17 h83
2018
23.09 100km JPN28. Akita Nairiku 100km Marathon 11:45:23 h174
21.01 100km JPN28th Miyako 100 km Ultramarathon 11:42:11 h88
2017
11.06 100km JPN13th Iwate Ginga 100km Marathon Challenge 10:49:44 h218
05.03 100km JPN3rd Nagoura Marathon 100 km 11:54:46 h45
2016
18.12 100km JPN1st Okinawa 100km Ultramarathon 12:35:17 h145
12.06 100km JPN12th Iwate Ginga 100km Marathon Challenge 11:18:54 h225
06.03 100km JPN2nd Nagoura Marathon 100 km 12:50:59 h91
2015
14.06 100km JPN11th Iwate Ginga 100km Marathon Challenge 12:03:28 h361
15.03 100km JPN1st Nagoura Marathon 100 km 13:20:47 h89
2014
29.06 100km JPN29. Lake Saroma 100 km Ultramarathon 11:49:29 h750
12.01 100km JPN24th Miyako 100 km Ultramarathon 10:40:13 h52
2013
09.06 100km JPN9th Iwate Ginga 100km Marathon Challenge 11:40:52 h285
13.01 100km JPN23rd Miyako 100 km Ultramarathon 11:00:21 h63
2012
10.06 50km JPN8th Iwate Ginga 50km Marathon Challenge 4:39:47 h56