Hi thanks for the tip; I redraw manually the racecourse in a Geojson file that looks like this : { "type": "FeatureCollection", "features": [ { "type": "Feature", "geometry": { "type": "Polygon", "coordinates": [ [ [2.2067 , 41.387983], [2.242967, 41.389983], [2.24525 , 41.387317], [2.244767, 41.3742 ], [2.240133, 41.365583], [2.234167, 41.363617], [2.200867, 41.373117], [2.198817, 41.377233], [2.2067 , 41.387983] ] ] } }, { "type": "Feature", "geometry": { "type": "LineString", "coordinates": [ [2.208 , 41.387283], [2.2083 , 41.38735 ], [2.2392 , 41.38555 ], [2.238 , 41.373917], [2.215283, 41.375267], [2.213317, 41.37395 ], [2.208517, 41.374233], [2.20675 , 41.375717], [2.208 , 41.387283] ] } } ] } Then uploaded the file to Windy and it gives that : [image: 1725353730026-13602812-4340-45d1-a4d3-be8efe12d236-image.png] Looks perfect !! If anyone has the real coordinates of the course I'd love them. It seems that it is not every day the same position. Regards; Jean