Training Calendar Wanneer: 9 december 2025 @ 19:00 – 20:30 2025-12-09T19:00:00+01:00 2025-12-09T20:30:00+01:00 Training Interval loopjes: 10x 400m DL2 + 100m DL3 Pauze 1 min. Rest langzame duurloop.