| Didcot to Bougival | 241.16 mi (388.11 km) |
| Didcot to Bouguenais | 306.46 mi (493.19 km) |
| Didcot to Boulogne-Billancourt | 245.59 mi (395.24 km) |
| Didcot to Boulogne-sur-Mer | 137.83 mi (221.82 km) |
| Didcot to Bourg-de-Peage | 537.59 mi (865.17 km) |
| Didcot to Bourg-en-Bresse | 474.55 mi (763.71 km) |
| Didcot to Bourg-la-Reine | 250.70 mi (403.46 km) |
| Didcot to Bourg-les-Valence | 539.26 mi (867.86 km) |
| Didcot to Bourges | 352.61 mi (567.47 km) |
| Didcot to Bourgoin-Jallieu | 511.05 mi (822.45 km) |
| Didcot to Bressuire | 331.04 mi (532.76 km) |
| Didcot to Brest | 264.89 mi (426.30 km) |
| Didcot to Bretigny-sur-Orge | 259.77 mi (418.05 km) |
| Didcot to Breuillet | 258.78 mi (416.47 km) |
| Didcot to Briancon | 587.73 mi (945.85 km) |
