| Grantham to Octeville | 231.50 mi (372.56 km) |
| Grantham to Oignies | 229.77 mi (369.77 km) |
| Grantham to Oissel | 258.19 mi (415.52 km) |
| Grantham to Olivet | 366.61 mi (590.00 km) |
| Grantham to Ollioules | 738.37 mi (1,188.29 km) |
| Grantham to Olonne-sur-Mer | 443.83 mi (714.28 km) |
| Grantham to Oloron-Sainte-Marie | 671.85 mi (1,081.24 km) |
| Grantham to Onet Village | 608.89 mi (979.91 km) |
| Grantham to Onnaing | 251.99 mi (405.53 km) |
| Grantham to Orange | 655.37 mi (1,054.71 km) |
| Grantham to Orchies | 236.88 mi (381.21 km) |
| Grantham to Orleans | 364.17 mi (586.08 km) |
| Grantham to Orly | 317.21 mi (510.51 km) |
| Grantham to Ormesson-sur-Marne | 317.27 mi (510.60 km) |
| Grantham to Orsay | 316.53 mi (509.40 km) |
