| Watertown Town to Nyon | 3,675.98 mi (5,915.92 km) |
| Watertown Town to Oberriet | 3,788.57 mi (6,097.11 km) |
| Watertown Town to Obersiggenthal | 3,729.98 mi (6,002.82 km) |
| Watertown Town to Oberwil | 3,698.21 mi (5,951.69 km) |
| Watertown Town to Oberwingert | 3,749.03 mi (6,033.48 km) |
| Watertown Town to Oftringen | 3,719.37 mi (5,985.75 km) |
| Watertown Town to Olten | 3,717.66 mi (5,983.00 km) |
| Watertown Town to Onex | 3,676.27 mi (5,916.38 km) |
| Watertown Town to Opfikon | 3,743.12 mi (6,023.97 km) |
| Watertown Town to Ostermundigen | 3,712.29 mi (5,974.36 km) |
| Watertown Town to Payerne | 3,692.86 mi (5,943.08 km) |
| Watertown Town to Pfaffikon | 3,754.24 mi (6,041.87 km) |
| Watertown Town to Plan-les-Ouates | 3,677.49 mi (5,918.35 km) |
| Watertown Town to Pratteln | 3,704.22 mi (5,961.37 km) |
| Watertown Town to Prilly | 3,687.18 mi (5,933.94 km) |
