| Fort Worth to Oerlinghausen | 5,080.22 mi (8,175.82 km) |
| Fort Worth to Oestrich-Winkel | 5,128.97 mi (8,254.28 km) |
| Fort Worth to Offenburg | 5,183.76 mi (8,342.46 km) |
| Fort Worth to Oftersheim | 5,174.52 mi (8,327.59 km) |
| Fort Worth to Ohrdruf | 5,197.88 mi (8,365.17 km) |
| Fort Worth to Ohringen | 5,215.44 mi (8,393.44 km) |
| Fort Worth to Olbernhau | 5,297.24 mi (8,525.08 km) |
| Fort Worth to Olching | 5,322.84 mi (8,566.28 km) |
| Fort Worth to Oldenburg | 5,020.71 mi (8,080.05 km) |
| Fort Worth to Oldenburg in Holstein | 5,069.29 mi (8,158.23 km) |
| Fort Worth to Olfen | 5,043.03 mi (8,115.98 km) |
| Fort Worth to Olpe | 5,085.12 mi (8,183.72 km) |
| Fort Worth to Olsberg | 5,096.54 mi (8,202.09 km) |
| Fort Worth to Oranienburg | 5,209.47 mi (8,383.83 km) |
| Fort Worth to Ortenberg | 5,154.81 mi (8,295.87 km) |
