| Cities | Distance |
|---|---|
| Opera to Opwijk | 449.87 mi (724.00 km) |
| Opera to Ostend | 496.31 mi (798.73 km) |
| Opera to Oud-Heverlee | 430.92 mi (693.50 km) |
| Opera to Oud-Turnhout | 453.52 mi (729.87 km) |
| Opera to Oudenaarde | 457.74 mi (736.65 km) |
| Opera to Oudenburg | 491.85 mi (791.55 km) |
| Opera to Oupeye | 403.13 mi (648.78 km) |
| Opera to Overijse | 431.00 mi (693.63 km) |
| Opera to Overpelt | 439.12 mi (706.69 km) |
| Opera to Paal | 432.71 mi (696.38 km) |
| Opera to Peer | 433.18 mi (697.14 km) |
| Opera to Pepinster | 391.04 mi (629.32 km) |
| Opera to Peruwelz | 439.91 mi (707.97 km) |
| Opera to Perwez | 415.19 mi (668.18 km) |
| Opera to Philippeville | 396.91 mi (638.77 km) |