| Tredegar to Orbetello | 934.00 mi (1,503.12 km) |
| Tredegar to Oria | 1,259.52 mi (2,027.01 km) |
| Tredegar to Oristano | 995.86 mi (1,602.68 km) |
| Tredegar to Orta Nova | 1,148.12 mi (1,847.72 km) |
| Tredegar to Orte | 973.19 mi (1,566.21 km) |
| Tredegar to Ortona | 1,050.60 mi (1,690.78 km) |
| Tredegar to Orvieto | 950.60 mi (1,529.85 km) |
| Tredegar to Orzinuovi | 744.28 mi (1,197.81 km) |
| Tredegar to Osimo | 963.11 mi (1,549.98 km) |
| Tredegar to Ospitaletto | 742.45 mi (1,194.86 km) |
| Tredegar to Ostuni | 1,246.28 mi (2,005.69 km) |
| Tredegar to Ottaviano | 1,128.17 mi (1,815.61 km) |
| Tredegar to Ovada | 735.12 mi (1,183.07 km) |
| Tredegar to Ozieri | 967.37 mi (1,556.83 km) |
| Tredegar to Paceco | 1,221.74 mi (1,966.20 km) |
