| Barrhead to Orthez | 865.70 mi (1,393.21 km) |
| Barrhead to Orvault | 601.07 mi (967.32 km) |
| Barrhead to Osny | 538.78 mi (867.08 km) |
| Barrhead to Ostwald | 714.96 mi (1,150.62 km) |
| Barrhead to Ouistreham | 482.68 mi (776.79 km) |
| Barrhead to Oullins | 802.95 mi (1,292.23 km) |
| Barrhead to Outreau | 430.00 mi (692.02 km) |
| Barrhead to Oyonnax | 789.11 mi (1,269.94 km) |
| Barrhead to Ozoir-la-Ferriere | 569.18 mi (916.01 km) |
| Barrhead to Pace | 540.27 mi (869.48 km) |
| Barrhead to Palaiseau | 563.75 mi (907.27 km) |
| Barrhead to Pamiers | 916.06 mi (1,474.25 km) |
| Barrhead to Panazol | 731.28 mi (1,176.88 km) |
| Barrhead to Pantin | 555.93 mi (894.68 km) |
| Barrhead to Paray-le-Monial | 742.71 mi (1,195.27 km) |
