| South San Francisco to Orthez | 5,746.11 mi (9,247.47 km) |
| South San Francisco to Orvault | 5,527.25 mi (8,895.25 km) |
| South San Francisco to Osny | 5,551.19 mi (8,933.78 km) |
| South San Francisco to Ostwald | 5,741.86 mi (9,240.62 km) |
| South San Francisco to Ouistreham | 5,469.46 mi (8,802.25 km) |
| South San Francisco to Oullins | 5,810.38 mi (9,350.90 km) |
| South San Francisco to Outreau | 5,452.48 mi (8,774.91 km) |
| South San Francisco to Oyonnax | 5,806.99 mi (9,345.44 km) |
| South San Francisco to Ozoir-la-Ferriere | 5,584.28 mi (8,987.03 km) |
| South San Francisco to Pace | 5,478.67 mi (8,817.07 km) |
| South San Francisco to Palaiseau | 5,574.57 mi (8,971.40 km) |
| South San Francisco to Pamiers | 5,845.31 mi (9,407.11 km) |
| South San Francisco to Panazol | 5,694.44 mi (9,164.31 km) |
| South San Francisco to Pantin | 5,569.79 mi (8,963.71 km) |
| South San Francisco to Paray-le-Monial | 5,750.15 mi (9,253.97 km) |
