Each day is a different color on the map. ACT days are drawn from your GPX traces; road segments are routed online (OSRM) with a dashed fallback if routing fails.
If road routes don't appear, you're likely offline or the routing service blocked the request. The ACT GPX lines will still show.
OsmAnd tip: on mobile, tap “Open GPX in OsmAnd”. If your browser just shows XML, use the “Download GPX” button then open the downloaded file and choose OsmAnd.
Basemap © OpenStreetMap contributors. On-road routing (when loaded) powered by OSRM via routing.openstreetmap.de.