| San Marino to Arcata (California) | 568.58 mi (915.04 km) |
| San Marino to Archdale (North Carolina) | 2,148.91 mi (3,458.33 km) |
| San Marino to Arden-Arcade (California) | 358.98 mi (577.72 km) |
| San Marino to Ardmore (Oklahoma) | 1,197.82 mi (1,927.70 km) |
| San Marino to Ardmore (Pennsylvania) | 2,372.36 mi (3,817.95 km) |
| San Marino to Arecibo (Puerto Rico) | 3,323.96 mi (5,349.39 km) |
| San Marino to Arkadelphia (Arkansas) | 1,428.61 mi (2,299.12 km) |
| San Marino to Arkansas City (Kansas) | 1,198.85 mi (1,929.37 km) |
| San Marino to Arlington (Tennessee) | 1,612.39 mi (2,594.88 km) |
| San Marino to Arlington (Texas) | 1,212.34 mi (1,951.08 km) |
| San Marino to Arlington (Virginia) | 2,282.13 mi (3,672.73 km) |
| San Marino to Arlington (Washington) | 992.63 mi (1,597.49 km) |
| San Marino to Arlington Heights (Illinois) | 1,717.70 mi (2,764.37 km) |
| San Marino to Arnold (Maryland) | 2,313.51 mi (3,723.24 km) |
| San Marino to Arnold (Missouri) | 1,567.35 mi (2,522.40 km) |
