| San Marino to University Place (Washington) | 933.53 mi (1,502.38 km) |
| San Marino to Upland (California) | 25.90 mi (41.69 km) |
| San Marino to Upper Arlington (Ohio) | 1,961.15 mi (3,156.16 km) |
| San Marino to Upper Grand Lagoon (Florida) | 1,905.39 mi (3,066.43 km) |
| San Marino to Upper Montclair (New Jersey) | 2,426.04 mi (3,904.33 km) |
| San Marino to Urbana (Illinois) | 1,690.66 mi (2,720.86 km) |
| San Marino to Urbana (Maryland) | 2,266.92 mi (3,648.25 km) |
| San Marino to Urbana (Ohio) | 1,925.11 mi (3,098.16 km) |
| San Marino to Urbandale (Iowa) | 1,418.91 mi (2,283.51 km) |
| San Marino to Utica (New York) | 2,369.36 mi (3,813.11 km) |
| San Marino to Uvalde (Texas) | 1,128.35 mi (1,815.91 km) |
| San Marino to Vacaville (California) | 362.96 mi (584.13 km) |
| San Marino to Vadnais Heights (Minnesota) | 1,523.17 mi (2,451.31 km) |
| San Marino to Vail (Arizona) | 453.30 mi (729.52 km) |
| San Marino to Valdosta (Georgia) | 2,032.95 mi (3,271.71 km) |
