| Topeka to Orbetello | 5,184.26 mi (8,343.26 km) |
| Topeka to Oria | 5,521.58 mi (8,886.13 km) |
| Topeka to Oristano | 5,189.53 mi (8,351.74 km) |
| Topeka to Orta Nova | 5,409.04 mi (8,705.01 km) |
| Topeka to Orte | 5,229.14 mi (8,415.49 km) |
| Topeka to Ortona | 5,311.77 mi (8,548.46 km) |
| Topeka to Orvieto | 5,206.92 mi (8,379.72 km) |
| Topeka to Orzinuovi | 5,006.00 mi (8,056.38 km) |
| Topeka to Osimo | 5,225.32 mi (8,409.34 km) |
| Topeka to Ospitaletto | 5,004.67 mi (8,054.23 km) |
| Topeka to Ostuni | 5,508.58 mi (8,865.20 km) |
| Topeka to Ottaviano | 5,383.62 mi (8,664.11 km) |
| Topeka to Ovada | 4,988.91 mi (8,028.87 km) |
| Topeka to Ozieri | 5,176.98 mi (8,331.55 km) |
| Topeka to Paceco | 5,437.80 mi (8,751.29 km) |
