| Ourem to Navodari | 1,919.68 mi (3,089.42 km) |
| Ourem to Negresti-Oas | 1,680.08 mi (2,703.83 km) |
| Ourem to Nehoiu | 1,804.56 mi (2,904.16 km) |
| Ourem to Ocna Mures | 1,689.71 mi (2,719.33 km) |
| Ourem to Odobesti | 1,841.54 mi (2,963.68 km) |
| Ourem to Odorheiu Secuiesc | 1,758.01 mi (2,829.24 km) |
| Ourem to Oltenita | 1,822.78 mi (2,933.47 km) |
| Ourem to Onesti | 1,827.87 mi (2,941.68 km) |
| Ourem to Oradea | 1,603.16 mi (2,580.03 km) |
| Ourem to Orastie | 1,655.64 mi (2,664.50 km) |
| Ourem to Oravita | 1,579.17 mi (2,541.42 km) |
| Ourem to Orsova | 1,613.08 mi (2,596.00 km) |
| Ourem to Otelu Rosu | 1,613.42 mi (2,596.55 km) |
| Ourem to Otopeni | 1,793.66 mi (2,886.61 km) |
| Ourem to Ovidiu | 1,917.26 mi (3,085.53 km) |
