| Onalaska to Nasaud | 5,020.53 mi (8,079.76 km) |
| Onalaska to Navodari | 5,307.97 mi (8,542.36 km) |
| Onalaska to Negresti-Oas | 4,959.66 mi (7,981.80 km) |
| Onalaska to Nehoiu | 5,180.18 mi (8,336.69 km) |
| Onalaska to Ocna Mures | 5,048.08 mi (8,124.10 km) |
| Onalaska to Odobesti | 5,182.99 mi (8,341.22 km) |
| Onalaska to Odorheiu Secuiesc | 5,098.50 mi (8,205.24 km) |
| Onalaska to Oltenita | 5,256.71 mi (8,459.86 km) |
| Onalaska to Onesti | 5,148.02 mi (8,284.94 km) |
| Onalaska to Oradea | 4,950.59 mi (7,967.21 km) |
| Onalaska to Orastie | 5,053.67 mi (8,133.10 km) |
| Onalaska to Oravita | 5,043.49 mi (8,116.72 km) |
| Onalaska to Orsova | 5,083.28 mi (8,180.75 km) |
| Onalaska to Otelu Rosu | 5,042.13 mi (8,114.53 km) |
| Onalaska to Otopeni | 5,214.17 mi (8,391.40 km) |
