| Didcot to Granada | 1,003.52 mi (1,615.00 km) |
| Didcot to Granadilla de Abona | 1,807.06 mi (2,908.18 km) |
| Didcot to Granollers | 710.58 mi (1,143.57 km) |
| Didcot to Grinon | 796.72 mi (1,282.20 km) |
| Didcot to Guadalajara | 763.63 mi (1,228.95 km) |
| Didcot to Guadarrama | 767.46 mi (1,235.11 km) |
| Didcot to Guadix | 992.76 mi (1,597.69 km) |
| Didcot to Guardamar del Segura | 934.32 mi (1,503.64 km) |
| Didcot to Guernica y Luno | 576.56 mi (927.89 km) |
| Didcot to Guia de Isora | 1,805.48 mi (2,905.64 km) |
| Didcot to Guillena | 1,000.17 mi (1,609.61 km) |
| Didcot to Guimar | 1,790.42 mi (2,881.40 km) |
| Didcot to Hellin | 904.64 mi (1,455.87 km) |
| Didcot to Herencia | 851.72 mi (1,370.71 km) |
| Didcot to Hernani | 577.18 mi (928.88 km) |
