De Run2Day Halve van Haarlem 2026

The Run2Day Halve van Haarlem starts and finishes on the Grote Markt, Haarlem's main square in Noord-Holland. This paved road race takes place in September, featuring a half marathon of 21.1 km as its longest distance. The event also offers 10 km and 5 km races, a Business Run for corporate teams, and children's races: the KidsRun and the Kabouterloop (Gnome Run). The half marathon route departs the city center, passes through Haarlem neighborhoods, and enters the green, dune-filled areas surrounding the city, with some descriptions noting dunes and forest. SportSupport Kennemerland, through Stichting SportSupport Kennemerland / KP45 and affiliated with the Atletiekunie, organizes the race. The participant limit is 10,000, allowing for a substantial field without the scale of a massive city marathon. Amenities on race day include changing areas, massage, first aid, a supervised cloakroom, and public transport access. A previous adjustment to the start location has provided space for expansion.