Sietske Altena

NetherlandsNetherlandsActive
Events
Marathon · 15 Kilometres Road

Sietske Altena is a Netherlands long-distance runner. She competes primarily in the Marathon and 15Kilometr.

Her personal bests include 2:59:21 in the Marathon and 59:45 in the 15Kilometr. She is currently active on the international athletics circuit, representing Netherlands.

Personal best · Marathon2:59:21
2026 season best18:26.49May 22, 2026
2026 season best
Personal best · 15 Kilometres Road59:45
Last competitionRunnersworld Utrecht Track Meeting 2May 22, 2026 · 18:26.49
Runnersworld Utrecht Track Meeting 2

As of Nov 15, 2026: Marathon 2:59:21, 15 Kilometres Road 59:45, 2026 season best 18:26.49 (May 22, 2026) · Last competition: Runnersworld Utrecht Track Meeting 2, May 22, 2026, 18:26.49

Personal bests

WA points calculator →
DisciplineResultAll-time
MarathonAmsterdam 2025Netherlands Marathon all-time list2:59:21861 pts–
15KilometrNijmegen 202459:45–

Progression

SeasonDisciplineResultWindDateCompetitions
20265000m 18:26.49–May 22, 2026Runnersworld Utrecht Track Meeting 2
2025Marathon 2:59:21–Oct 19, 2025TCS Amsterdam Marathon
202415Kilometr 59:45–Nov 17, 2024NN Zevenheuvelenloop
FAQ

Frequently asked questions

Sietske Altena's Marathon personal best is 2:59:21, set on Oct 19, 2025 in Amsterdam (NED).

Sietske Altena competes in the Marathon and 15 Kilometres Road.

2026 season best: 18:26.49, set on May 22, 2026. Last competition: Runnersworld Utrecht Track Meeting 2 on May 22, 2026, 18:26.49.