Sei Yokoyama
Biography
Sei Yokoyama is a runner with running results recorded on ATHRECS. The recorded nationality is Japan. Published performances include half marathon. A recorded half marathon performance is 1 hour, 5 minutes and 49 seconds (timing unknown) at 78th Kagawa Marugame International Half Marathon on 1 February 2026.
Sei Yokoyama's published record includes performances from 2025 to 2026 in Half marathon. Selected recorded events include The 103rd Hakone Ekiden Qualifying Meet (2025; source checked); 78th Kagawa Marugame International Half Marathon (2026; source checked).
Achievements & next milestones
Based on eligible results linked to this profile. Missing results can change these totals.
Achieved
First recorded finish
Based on 1 distinct completed events in your linked record.
First recorded half marathon
First matching distance in your linked results; earlier unlinked history may exist.
PB improved
A faster result after an earlier performance in the same sport, distance, surface and timing category.
Next milestones
5 finishes
3 more finishes needed
2 of 5 recorded
2 different countries
1 more different country needed
1 of 2 recorded
2 different sports
1 more different sport needed
1 of 2 recorded
3 calendar years with a finish
1 more calendar year with a finish needed
2 of 3 recorded
Career highlights
Sei Yokoyama's published record includes performances from 2025 to 2026 in Half marathon.
Selected events from this athlete’s recorded career. Verification is shown for each record.
The 103rd Hakone Ekiden Qualifying Meet
2025 · Half marathon
Source checked78th Kagawa Marugame International Half Marathon
2026 · Half marathon
Source checked
Latest results
Showing 2 of 2 recorded performances.
| Race date | Race name | Sport | Distance / discipline | Location | Performance | Place | Category |
|---|---|---|---|---|---|---|---|
| Sun, 1 Feb 2026 | Completed event · Finisher · 78th Kagawa Marugame International Half Marathon | Running | Half marathonRoad | Marugame | 1:05:49VerifiedTiming unknown | — | — |
| Sat, 18 Oct 2025 | Completed event · Finisher · The 103rd Hakone Ekiden Qualifying Meet | Running | Half marathonRoad | Showa Kinen Park, Tachikawa | 1:08:58VerifiedTiming unknown | — | — |
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