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34,045EventsUnited States2026
SEP 2026
20SUN
6
SEP
Tikkende Klok Challenge
Zandvoort, NL
SUN
6
SEP
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Tikkende Klok Challenge
Sunday, September 6, 2026 · Zandvoort, Netherlands
Distances
4.2km
8.4km
12.6km
16.8km
Half
25.2km
29.4km
33.8km
38km
Full
84.4km
Start location
About this race
The Tikkende Klok Challenge supports research into the hereditary heart muscle disease PLN. Participants can complete any number of laps in the 'One Hour, One Lap' event. A Last Runner Standing challenge is available for competitive runners. All donations fund vital scientific research. Families are encouraged to participate.