| Sint-Gillis-bij-Dendermonde to Oestrich-Winkel | 185.00 mi (297.72 km) |
| Sint-Gillis-bij-Dendermonde to Offenburg | 245.50 mi (395.09 km) |
| Sint-Gillis-bij-Dendermonde to Oftersheim | 228.46 mi (367.66 km) |
| Sint-Gillis-bij-Dendermonde to Ohrdruf | 288.83 mi (464.83 km) |
| Sint-Gillis-bij-Dendermonde to Ohringen | 269.96 mi (434.45 km) |
| Sint-Gillis-bij-Dendermonde to Olbernhau | 403.06 mi (648.66 km) |
| Sint-Gillis-bij-Dendermonde to Olching | 376.80 mi (606.40 km) |
| Sint-Gillis-bij-Dendermonde to Oldenburg | 227.94 mi (366.83 km) |
| Sint-Gillis-bij-Dendermonde to Oldenburg in Holstein | 363.15 mi (584.43 km) |
| Sint-Gillis-bij-Dendermonde to Olfen | 149.36 mi (240.37 km) |
| Sint-Gillis-bij-Dendermonde to Olpe | 162.00 mi (260.71 km) |
| Sint-Gillis-bij-Dendermonde to Olsberg | 190.93 mi (307.27 km) |
| Sint-Gillis-bij-Dendermonde to Oranienburg | 407.12 mi (655.20 km) |
| Sint-Gillis-bij-Dendermonde to Ortenberg | 221.41 mi (356.32 km) |
| Sint-Gillis-bij-Dendermonde to Oschatz | 390.29 mi (628.11 km) |
