| Silver Spring to Nyon | 4,059.99 mi (6,533.93 km) |
| Silver Spring to Oberriet | 4,172.92 mi (6,715.67 km) |
| Silver Spring to Obersiggenthal | 4,114.32 mi (6,621.36 km) |
| Silver Spring to Oberwil | 4,082.53 mi (6,570.20 km) |
| Silver Spring to Oberwingert | 4,133.38 mi (6,652.03 km) |
| Silver Spring to Oftringen | 4,103.69 mi (6,604.25 km) |
| Silver Spring to Olten | 4,101.98 mi (6,601.50 km) |
| Silver Spring to Onex | 4,060.20 mi (6,534.26 km) |
| Silver Spring to Opfikon | 4,127.47 mi (6,642.52 km) |
| Silver Spring to Ostermundigen | 4,096.54 mi (6,592.74 km) |
| Silver Spring to Payerne | 4,077.04 mi (6,561.37 km) |
| Silver Spring to Pfaffikon | 4,138.59 mi (6,660.41 km) |
| Silver Spring to Plan-les-Ouates | 4,061.42 mi (6,536.22 km) |
| Silver Spring to Pratteln | 4,088.55 mi (6,579.89 km) |
| Silver Spring to Prilly | 4,071.27 mi (6,552.07 km) |
