Lake Whatcom Downwind Follow the approximate south-to-north line across Lake Whatcom from South Bay towards the Larson Mill and Silver Beach shoreline, with three plotted turns. The five manually estimated points measure about 14.88 km, close to the source map's labelled legs totalling 14.81 km and its rounded 15 km listing. This is an image-based reconstruction, not an original GPS track; the points and endpoints are approximate. Confirm permitted launch and landing access, cold-water equipment and local conditions before planning. Not for navigation. Geographic reference: OpenStreetMap contributors, ODbL (https://www.openstreetmap.org/copyright). Photo: Feedmepaperr. CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0). Source: https://commons.wikimedia.org/wiki/File:South_Lake_Whatcom_rail_bridge_(side).jpg. Credit: Own work. Route exported from the stored geo_path. Not for navigation. South Lake Whatcom near the source marker (presumed start)-122.3154096,48.6732006,0 Waypoint 2-122.303218,48.702919,0 Waypoint 3-122.314941,48.724731,0 Waypoint 4-122.400284,48.750709,0 Larson Mill / Silver Beach shoreline (presumed finish)-122.422792,48.760756,0 Lake Whatcom Downwind - route#route 1clampToGround -122.3154096,48.6732006,0 -122.303218,48.702919,0 -122.314941,48.724731,0 -122.400284,48.750709,0 -122.422792,48.760756,0