Gravel Rondo NL - Longest Weekend Challenge 635km 2026

The Longest Weekend Challenge 635km begins in Tiel, Gelderland province, Netherlands, sending gravel riders on a substantial off-road journey. It is designed for those who enjoy long distances and challenging terrain, not for a relaxed ride. The route covers 635 kilometers, stated to be entirely on gravel. This makes the event primarily a test of endurance, focus, and mental resilience, with the distance and unpaved riding presenting the main difficulties. The event targets dedicated gravel riders seeking a demanding challenge, prepared to invest significant time managing fatigue, concentration, and rough ground.