| Castro Valley to Rende | 6,491.03 mi (10,446.31 km) |
| Castro Valley to Resana | 6,008.94 mi (9,670.45 km) |
| Castro Valley to Rescaldina | 5,925.17 mi (9,535.64 km) |
| Castro Valley to Rezzato | 5,970.00 mi (9,607.79 km) |
| Castro Valley to Rho | 5,932.20 mi (9,546.95 km) |
| Castro Valley to Ribera | 6,511.63 mi (10,479.45 km) |
| Castro Valley to Riccione Marina | 6,121.39 mi (9,851.42 km) |
| Castro Valley to Riesi | 6,548.94 mi (10,539.50 km) |
| Castro Valley to Rieti | 6,218.48 mi (10,007.67 km) |
| Castro Valley to Rignano Flaminio | 6,219.43 mi (10,009.21 km) |
| Castro Valley to Rignano sull'Arno | 6,103.15 mi (9,822.07 km) |
| Castro Valley to Rimini | 6,115.71 mi (9,842.29 km) |
| Castro Valley to Rionero in Vulture | 6,383.81 mi (10,273.74 km) |
| Castro Valley to Riposto | 6,556.18 mi (10,551.16 km) |
| Castro Valley to Riva del Garda | 5,964.31 mi (9,598.63 km) |
