| Larkspur to Orbetello | 6,169.08 mi (9,928.17 km) |
| Larkspur to Oria | 6,460.85 mi (10,397.74 km) |
| Larkspur to Oristano | 6,232.07 mi (10,029.55 km) |
| Larkspur to Orta Nova | 6,359.91 mi (10,235.29 km) |
| Larkspur to Orte | 6,201.64 mi (9,980.57 km) |
| Larkspur to Ortona | 6,264.37 mi (10,081.54 km) |
| Larkspur to Orvieto | 6,179.01 mi (9,944.16 km) |
| Larkspur to Orzinuovi | 5,965.22 mi (9,600.10 km) |
| Larkspur to Osimo | 6,173.44 mi (9,935.18 km) |
| Larkspur to Ospitaletto | 5,960.45 mi (9,592.42 km) |
| Larkspur to Ostuni | 6,445.62 mi (10,373.23 km) |
| Larkspur to Ottaviano | 6,353.87 mi (10,225.57 km) |
| Larkspur to Ovada | 5,970.69 mi (9,608.90 km) |
| Larkspur to Ozieri | 6,207.12 mi (9,989.40 km) |
| Larkspur to Paceco | 6,463.16 mi (10,401.44 km) |
