| Castro Valley to Oschatz | 5,716.07 mi (9,199.13 km) |
| Castro Valley to Oschersleben | 5,629.93 mi (9,060.50 km) |
| Castro Valley to Osnabruck | 5,534.02 mi (8,906.14 km) |
| Castro Valley to Ostbevern | 5,542.01 mi (8,919.00 km) |
| Castro Valley to Osterburg | 5,599.41 mi (9,011.39 km) |
| Castro Valley to Ostercappeln | 5,535.13 mi (8,907.93 km) |
| Castro Valley to Osterhofen | 5,862.46 mi (9,434.71 km) |
| Castro Valley to Osterholz-Scharmbeck | 5,502.15 mi (8,854.85 km) |
| Castro Valley to Osternienburg | 5,661.04 mi (9,110.57 km) |
| Castro Valley to Osterode | 5,621.07 mi (9,046.23 km) |
| Castro Valley to Osterwieck | 5,619.47 mi (9,043.66 km) |
| Castro Valley to Ostfildern | 5,761.06 mi (9,271.53 km) |
| Castro Valley to Osthofen | 5,682.29 mi (9,144.76 km) |
| Castro Valley to Ostrhauderfehn | 5,477.51 mi (8,815.20 km) |
| Castro Valley to Ostringen | 5,719.52 mi (9,204.68 km) |
