| Glen Burnie to Orthez | 3,806.70 mi (6,126.29 km) |
| Glen Burnie to Orvault | 3,670.18 mi (5,906.59 km) |
| Glen Burnie to Osny | 3,784.50 mi (6,090.57 km) |
| Glen Burnie to Ostwald | 4,034.59 mi (6,493.04 km) |
| Glen Burnie to Ouistreham | 3,681.05 mi (5,924.08 km) |
| Glen Burnie to Oullins | 3,993.73 mi (6,427.29 km) |
| Glen Burnie to Outreau | 3,724.72 mi (5,994.35 km) |
| Glen Burnie to Oyonnax | 4,014.71 mi (6,461.05 km) |
| Glen Burnie to Ozoir-la-Ferriere | 3,817.74 mi (6,144.06 km) |
| Glen Burnie to Pace | 3,642.67 mi (5,862.31 km) |
| Glen Burnie to Palaiseau | 3,801.01 mi (6,117.14 km) |
| Glen Burnie to Pamiers | 3,926.44 mi (6,318.99 km) |
| Glen Burnie to Panazol | 3,836.32 mi (6,173.96 km) |
| Glen Burnie to Pantin | 3,802.94 mi (6,120.24 km) |
| Glen Burnie to Paray-le-Monial | 3,942.52 mi (6,344.88 km) |
