Klaverbladloop - Zoetermeer 2026

The Klaverbladloop is an annual road running event in Zoetermeer, organized by ARV Ilion from its club grounds on Van der Hagenstraat. Participants can select from multiple distances up to 15 km, including 5 km and 10 km performance runs, a 15 km competition race, and short youth races for children. Entries are limited to 1,500, and registration must be completed in advance. The longer races begin at the Ilion grounds, proceed through Zoetermeer, and conclude on the athletics track. The 15 km route follows the Zoetermeerse lake area and is included in the Loopserie Zuidwest Nederland. Younger children run a protected course near the clubhouse, with one lap outside and another on the track, allowing parents to observe most of the race. The event was formerly known as the Dotterbloemloop before a primary sponsor introduced the Klaverblad name.