| Guastalla to Oberriet | 173.97 mi (279.98 km) |
| Guastalla to Obersiggenthal | 210.76 mi (339.19 km) |
| Guastalla to Oberwil | 233.05 mi (375.05 km) |
| Guastalla to Oberwingert | 201.25 mi (323.89 km) |
| Guastalla to Oftringen | 211.74 mi (340.76 km) |
| Guastalla to Olten | 214.01 mi (344.42 km) |
| Guastalla to Onex | 237.61 mi (382.40 km) |
| Guastalla to Opfikon | 200.80 mi (323.16 km) |
| Guastalla to Ostermundigen | 207.68 mi (334.23 km) |
| Guastalla to Payerne | 222.44 mi (357.98 km) |
| Guastalla to Pfaffikon | 191.78 mi (308.64 km) |
| Guastalla to Plan-les-Ouates | 236.47 mi (380.57 km) |
| Guastalla to Pratteln | 228.85 mi (368.29 km) |
| Guastalla to Prilly | 225.68 mi (363.20 km) |
| Guastalla to Pully | 222.35 mi (357.84 km) |
