Gravel Ritten GR1 - 71KM - Gravel BB.gpx (7 downloads ) GR2 - 65KM - Gravel BB 2.gpx (4 downloads ) GR3 - 68KM - Gravel BB 3.gpx (3 downloads ) GR4 - 65KM - Gravel BB 4.gpx (5 downloads )