Tatsuya (前田達哉) Maeda
ID 18652
Born : 1965 Cat. M60 Ultrarunner since 1999 JPN
30
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
60
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
3
Countries visited ?JPNJapanNEDNetherlandsTPETaiwan
7,3%
Rank quotient ?This runner's calculation uses 30 eligible race(s): Σ(rank − 1) = 339; Σ finishers = 4 639. 339 / 4 639 × 100 = 7.31%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed30
Km — ultra races4 533 km
> 100 km17
> 160 km14
> 200 km9
> 24h13
Longest race250,0 km
9. Sakura Michi Kokusai Nature Run — 20/4/2002

Km per year (ultra races)

2022
2023
2024
1 040
7 races
2025
1 113
10 races
2026

Race types (share of distance)

Road85,4%
Trail14,6%

Wins & podiums (ultra)

🏆 Win6
🏆 Win M6
🏅 Top 39
🏅 Top 3 M9
Longest winning streak1
Current streak0

Records

100 km7h37'3824 h241,56 km

HISTORY

31 race(s) · 2 split(s) nested
DateRacePerf.Rk
2026
11.07 100km JPN4th North Kyoto 100 Trail Run 14:15:47 h5
20.06 24h JPN5th Oizumi Ryokuchi Park 24h 204.600 km1 🏆
14.06 100km JPN20th Iwate Ginga 100km Marathon Challenge 9:14:38 h34
30.05 100km JPN6th Lake Suwa Ultra Marathon - 100 km 9:24:01 h4
23.05 60km JPN5th Tokyo Grand Trail - 60km 10:59:34 h17
19.04 100km JPN30th 100 km Ultramarathon Ako Seaside Park 8:48:39 h4
13.04 100km JPN11th Tamagawa Ultra Marathon - 100 km 9:13:52 h2 🥈
28.03 24h JPN2nd Biwako 24 186.000 km7
08.03 100km JPN8th Ibaraki 100k Ultra Marathon 8:49:17 h29
01.02 62km JPN4. Minuma Challenge 60 5:44:59 h5
2025
01.11 200km JPN9th Santo Ultra Maranic - Santo Course 29:29:00 h2 🥈
12.10 24h JPN3rd Aizu Yanaizu Akabeko Marathon - 24h 185.850 km4
22.08 101km JPN12th World Cultural Heritage "Fuji" Foot Race 10:57:10 h9
21.06 24h JPN4th Oizumi Ryokuchi Park 24h 180.400 km1 🏆
08.06 100km JPN19th Iwate Ginga 100km Marathon Challenge 9:13:58 h26
13.04 100km JPN10th Tamagawa Ultra Marathon - 100 km 10:44:58 h24
29.03 24h JPN1st Biwako 24 172.860 km7
2006
03.06 24h JPN4th Akiruno 24 Hour Race Japan Cup 217.655 km7
2005
11.06 24h JPN3rd Akiruno 24 Hour Race Japan Cup 157.240 km19
03.04 100km JPN47. Tsurunuma 100 km 8:28:37 h1 🏆
2004
12.06 24h JPN2nd Akiruno 24 Hour Race Japan Cup 111.200 km33
04.04 100km JPN45. Tsurunuma 100 km 7:37:38 h1 🏆
2003
11.10 12h NEDOpen race at IAU 24h WC & EC Uden - 12h Split 122.549 km37
11.10 24h NEDIAU 24h WC Uden 202.530 km64
05.07 24h JPN1st Akiruno 24 Hour Race Japan Cup 241.561 km2 🥈
08.03 24h TPE4th Soochow/Taipei 24h ultramarathon 212.697 km13
2002
20.04 250km JPN9. Sakura Michi Kokusai Nature Run 25:36:00 h1 🏆
02.03 24h TPE3rd Soochow/Taipei 24h ultramarathon 234.000 km5
2001
14.04 250km JPN8. Sakura Michi Kokusai Nature Run 27:24:00 h7
1999
06.11 24h JPN12th Sri Chinmoy 24 Hour Run Tokyo 202.941 km1 🏆
17.10 100km JPN6th River Shimanto 100km 8:43:50 h34