| Serpa to Oberriet | 1,082.61 mi (1,742.30 km) |
| Serpa to Obersiggenthal | 1,038.35 mi (1,671.06 km) |
| Serpa to Oberwil | 1,011.00 mi (1,627.05 km) |
| Serpa to Oberwingert | 1,058.12 mi (1,702.88 km) |
| Serpa to Oftringen | 1,017.22 mi (1,637.05 km) |
| Serpa to Olten | 1,017.85 mi (1,638.08 km) |
| Serpa to Onex | 902.11 mi (1,451.80 km) |
| Serpa to Opfikon | 1,047.04 mi (1,685.06 km) |
| Serpa to Ostermundigen | 986.63 mi (1,587.82 km) |
| Serpa to Payerne | 959.52 mi (1,544.20 km) |
| Serpa to Pfaffikon | 1,053.11 mi (1,694.81 km) |
| Serpa to Plan-les-Ouates | 902.12 mi (1,451.82 km) |
| Serpa to Pratteln | 1,016.68 mi (1,636.18 km) |
| Serpa to Prilly | 935.42 mi (1,505.42 km) |
| Serpa to Pully | 937.40 mi (1,508.61 km) |
