The map is driven by two CSV files. Edit data/walks.csv and data/route.csv in the repo, or try changes here first.
Tip: drag a CSV onto the map to load it. Right-click (or long-press) the map to get coordinates for a new row.
Columns: id, base, name, type, length_time, difficulty, dog_rule, features, dist_from_base_km, detour_km, notes, lat, lng, camping, fires, fishing, dog_swim, origin, rating, source, alltrails_url. dog_rule is one of Off lead, Dog park, Pub, Lake, On lead, Check, No dogs.