Shizuka (池田志津香) Ikeda
ID 562269
Born : 1957 Cat. W65 Ultrarunner since 2014 JPN
32
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
43
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
65,7%
Rank quotient ?This runner's calculation uses 32 eligible race(s): Σ(rank − 1) = 9 641; Σ finishers = 14 681. 9 641 / 14 681 × 100 = 65.67%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed32
Km — ultra races2 457 km
> 100 km1
> 24h1
Longest race138,0 km
1st Biwako 24 — 29/3/2025

Km per year (ultra races)

122
2 races
2022
298
4 races
2023
368
6 races
2024
445
5 races
2025
65
1 race
2026

Race types (share of distance)

Road83,6%
Trail16,4%

Wins & podiums (ultra)

🏆 Win0
🏆 Win F0
🏅 Top 30
🏅 Top 3 F1
Longest winning streak0
Current streak0

Records

50 km8h20'20100 km12h32'0324 h138,03 km

HISTORY

32 race(s)
DateRacePerf.Rk
2026
19.04 65km JPN26. Okukumano 65 km Ultramarathon 8:36:09 h47
2025
19.10 100km JPN31th River Shimanto 100km 13:54:07 h950
26.04 70km JPN4th KAI 70k 20:14:05 h846
20.04 65km JPN25. Okukumano 65 km Ultramarathon 8:15:51 h27
29.03 24h JPN1st Biwako 24 138.030 km25
22.02 72km JPN3rd Daimonji 100 - 72km 20:42:53 h37
2024
20.10 60km JPN30th River Shimanto 60km 7:00:55 h124
22.09 50km JPN1st OSJ Ontake 50km 8:20:20 h226
15.09 60km JPN22th Tango 60 km Ultramarathon 8:47:50 h299
19.05 77km JPN29th Saba Highway Ultramarathon 11:29:15 h348
21.04 65km JPN24. Okukumano 65 km Ultramarathon 8:00:39 h26
31.03 56km JPN30th Mt. Rocco Cannonball Run - 56 km Speed 10:53:38 h212
2023
22.10 56km JPN29th Mt. Rocco Cannonball Run - 56 km Speed 11:00:00 h292
22.07 100km JPN1st North Kyoto 100 Trail Run 21:59:29 h28
21.05 77km JPN28th Saba Highway Ultramarathon 11:26:15 h276
23.04 65km JPN23. Okukumano 65 km Ultramarathon 8:07:13 h29
2022
29.09 45km JPN25th Muraoka 45 km Ultra Marathon 5:31:23 h440
22.05 77km JPN27th Saba Highway Ultramarathon 12:04:27 h285
2020
31.10 60km JPN1st Lake Biwa Ultra Maranic - 60 km 7:49:51 h20
2019
20.10 60km JPN25th River Shimanto 60km 7:06:50 h153
19.05 72km JPN24th Saba Highway Ultramarathon 10:07:05 h309
28.04 65km JPN21. Okukumano 65 km Ultramarathon 7:21:05 h29
2018
21.10 60km JPN24th River Shimanto 60km 6:31:49 h92
20.05 72km JPN23th Saba Highway Ultramarathon 10:26:22 h427
22.04 100km JPN10th 100 km Ultra Maranic Osaka 14:47:11 h451
2017
15.10 100km JPN23rd River Shimanto 100km 13:30:57 h1017
23.04 100km JPN9th 100 km Ultra Maranic Osaka 13:33:37 h297
2016
16.10 100km JPN22nd River Shimanto 100km 12:32:03 h621
18.09 100km JPN16th Tango 100 km Ultramarathon 13:41:32 h1036
24.04 100km JPN8th 100 km Ultra Maranic Osaka 13:29:09 h285
2015
26.04 70km JPN7th 70 km Ultra Maranic Osaka 9:34:26 h149
2014
27.04 100km JPN6th 100 km Ultra Maranic Osaka 13:32:56 h270