Map: Headwind/Tailwind + Wind Arrows

Color encodes signed equivalent grade from wind drag. Violet and blue indicate tailwind assistance, green is near neutral, and yellow through red indicate headwind penalty. The power model projects the full apparent-wind force onto travel but still uses one CdA at all yaw angles. With the default arrow anchor, the arrowhead is on the track and the shaft extends toward the direction the wind came from. Shafts scale when the map is zoomed while arrowheads keep a fixed shape and size. Click any arrow or track segment for its timestamp and FIT row.