Endurance Sports
In addition to research, I compete in endurance sports including ultramarathons, triathlons, cycling, open-water swimming, and obstacle racing.
I approach endurance sports as a system of long-term adaptation, similar to research: consistent effort, failure recovery, and incremental improvement.
🔥 Highlights
🏁 Half-Ironman finisher — Suwako Eight Peaks (2025)
🏔 100 km Ultramarathon finisher — Tobishima (2024)
🏃 Multiple full marathons (sub-5h range)
🚴 Cycling endurance up to 180+ km
🏊 Open-water swimming up to 3 km
⚡ Spartan Race finisher
📊 Performance Snapshot
| Discipline | Best Performance |
|---|---|
| Marathon | 4:32:44 |
| Ultramarathon (100 km) | 15:29:01 |
| Half-Ironman | 6:18:34 |
| Olympic Triathlon | 3:07:19 |
| Open Water Swim | 1:08:46 (3 km) |
🏊🚴🏃 Triathlon Breakdown
Suwako Eight Peaks Middle Triathlon (2025)
Swim — 1.9 km → 0:47:26
Bike — 66.2 km → 2:55:30
Run — 20.5 km → 2:35:38
Total — 🕒 6:18:34
📄 Certificate links:
- Spartan: https://jp.spartan.com/ja/race/profile/6129071
- Sportstats: https://sportstats.one/event/2058/leaderboard/145485?focus=11718&type=pid
🧭 Race Timeline (Full Career)
2026 — Peak Obstacle / Speed
- Spartan Race Saitama Chichibu Sprint 5K — 1:35:59 (632/642)
2025 — Multi-discipline year
- NORTH ONTAKE Marathon — 6:20:54 (132/196)
- Halong Bay Marathon — 5:01:14 (2318/3990)
- Iwaki Sunshine Marathon — 5:27:25
- Cebu Marathon — 5:08:03 (875/2933)
- Atsumi Ultra 73 km — 11:25:01 (214/347)
- IRONMAN Japan South Hokkaido — DNF
2024 — Ultra endurance phase
- Tobishima Ultramarathon (100 km) — 15:29:01 (343/525)
- Hitachi Seaside Marathon — 5:32:57
- Mito Komon Marathon — 4:46:11
- Hakodate Marathon — 4:48:05
- Kasumigaura Marathon — 4:56:49
- Katsuta Marathon — 4:32:44
- Lake Biwa Triathlon — DSQ
2023 — Endurance base building
- Tour de Okinawa (175 km cycling) — ~9h
- Ibaraki K1 Ride (133 km cycling) — ~8h
- Shizuoka Aquathlon — 1:30:10
- Sado Long Ride — DNF
- Iwaki Marathon — 4:56:42
2022 — Entry phase
- Kujukuri 99T Triathlon — 3:15:41