Piastrone [ODbL 1.0] © contributori OpenStreetMap — https://www.openstreetmap.org/relation/17458041 ODbL 1.0 osm 2026-08-29T18:45:52Z Piastrone mtb/gravel 662.5 662.7 659.4 653.2 646.4 631.4 617.8 608.0 590.4