Knokke-Heist to Cadzand-Bad Downwind Follow the nearly straight offshore line from the Duinbergen/Knokke-Heist coast toward Cadzand-Bad, as shown on the source map. The four approximate points measure about 10.54 km, close to the map's 11.17 km total and the rounded 11 km listing. This is an image-based reconstruction, not an original GPS track; exact launch, landing and public access are unverified. The accompanying photo shows the nearby Heist Lake residential lagoon, not the North Sea route. Check wind, tide, currents, surf, shipping and shore access before planning. Not for navigation. Geographic reference: OpenStreetMap contributors, ODbL (https://www.openstreetmap.org/copyright). Photo: Dalsegnoalfine. CC0 (http://creativecommons.org/publicdomain/zero/1.0/deed.en). Source: https://commons.wikimedia.org/wiki/File:Belgium_Knokke-Heist_Duinbergen_Laguna_Beach_Humorhall_2.jpg. Credit: Own work. Route exported from the stored geo_path. Not for navigation. Duinbergen Beach shoreline (presumed start)3.2591911,51.3450344,0 Waypoint 23.259,51.354,0 Waypoint 33.378,51.379,0 Cadzand-Bad shoreline (presumed finish)3.3897171,51.3803225,0 Knokke-Heist to Cadzand-Bad Downwind - route#route 1clampToGround 3.2591911,51.3450344,0 3.259,51.354,0 3.378,51.379,0 3.3897171,51.3803225,0