Sentiero 321C [ODbL 1.0] © contributori OpenStreetMap — https://www.openstreetmap.org/relation/14376834 ODbL 1.0 osm 2026-08-29T18:45:52Z Sentiero 321C mtb 532.9 530.6 524.9 508.1 507.6 502.2 493.9 495.4 488.7 479.3 476.6 472.4 468.8 462.8 456.1 452.0 452.0 452.5 451.3 448.9 445.9