| Walnut Creek to Nyon | 5,791.64 mi (9,320.74 km) |
| Walnut Creek to Oberriet | 5,836.24 mi (9,392.52 km) |
| Walnut Creek to Obersiggenthal | 5,791.11 mi (9,319.90 km) |
| Walnut Creek to Oberwil | 5,768.71 mi (9,283.84 km) |
| Walnut Creek to Oberwingert | 5,802.87 mi (9,338.82 km) |
| Walnut Creek to Oftringen | 5,789.81 mi (9,317.80 km) |
| Walnut Creek to Olten | 5,787.51 mi (9,314.10 km) |
| Walnut Creek to Onex | 5,798.47 mi (9,331.74 km) |
| Walnut Creek to Opfikon | 5,801.81 mi (9,337.11 km) |
| Walnut Creek to Ostermundigen | 5,797.35 mi (9,329.94 km) |
| Walnut Creek to Payerne | 5,788.75 mi (9,316.10 km) |
| Walnut Creek to Pfaffikon | 5,811.58 mi (9,352.83 km) |
| Walnut Creek to Plan-les-Ouates | 5,799.87 mi (9,333.99 km) |
| Walnut Creek to Pratteln | 5,772.68 mi (9,290.23 km) |
| Walnut Creek to Prilly | 5,794.37 mi (9,325.13 km) |
