| Massillon to Oerlinghausen | 4,086.21 mi (6,576.11 km) |
| Massillon to Oestrich-Winkel | 4,125.38 mi (6,639.16 km) |
| Massillon to Offenburg | 4,174.27 mi (6,717.84 km) |
| Massillon to Oftersheim | 4,169.35 mi (6,709.92 km) |
| Massillon to Ohrdruf | 4,202.25 mi (6,762.87 km) |
| Massillon to Ohringen | 4,211.02 mi (6,776.99 km) |
| Massillon to Olbernhau | 4,305.65 mi (6,929.27 km) |
| Massillon to Olching | 4,317.54 mi (6,948.41 km) |
| Massillon to Oldenburg | 4,031.61 mi (6,488.25 km) |
| Massillon to Oldenburg in Holstein | 4,091.03 mi (6,583.88 km) |
| Massillon to Olfen | 4,045.79 mi (6,511.07 km) |
| Massillon to Olpe | 4,085.50 mi (6,574.98 km) |
| Massillon to Olsberg | 4,099.43 mi (6,597.39 km) |
| Massillon to Oranienburg | 4,227.68 mi (6,803.79 km) |
| Massillon to Ortenberg | 4,154.34 mi (6,685.76 km) |
