| San Marino to Ukiah (California) | 447.45 mi (720.10 km) |
| San Marino to Union (Missouri) | 1,533.89 mi (2,468.56 km) |
| San Marino to Union City (California) | 324.97 mi (522.99 km) |
| San Marino to Union City (Georgia) | 1,916.59 mi (3,084.46 km) |
| San Marino to Union City (New Jersey) | 2,435.15 mi (3,918.99 km) |
| San Marino to Union City (Tennessee) | 1,641.03 mi (2,640.98 km) |
| San Marino to Union Hill-Novelty Hill (Washington) | 958.38 mi (1,542.36 km) |
| San Marino to Union Park (Florida) | 2,197.65 mi (3,536.78 km) |
| San Marino to Uniondale (New York) | 2,458.23 mi (3,956.14 km) |
| San Marino to Universal City (Texas) | 1,202.48 mi (1,935.20 km) |
| San Marino to University (Florida) | 2,140.62 mi (3,445.00 km) |
| San Marino to University City (Missouri) | 1,570.35 mi (2,527.24 km) |
| San Marino to University Heights (Ohio) | 2,044.26 mi (3,289.92 km) |
| San Marino to University of California-Santa Barbara (California) | 101.59 mi (163.49 km) |
| San Marino to University Park (Texas) | 1,229.44 mi (1,978.60 km) |
