DE GROOT Jan Willem

3 races · 2026 index 652

• 2026-09-12 Challenge Almere-Amsterdam 2026 (Middle Distance Age Group) – 5:13:32 (#319)
• 2024-09-21 IRONMAN Italy Emilia Romagna – 10:49:47 (#509)
• 2023-06-25 Ironman 70.3 Westfriesland – 4:58:51 (#220)