| Sliven to Orvault | 1,394.56 mi (2,244.33 km) |
| Sliven to Osny | 1,241.35 mi (1,997.76 km) |
| Sliven to Ostwald | 983.62 mi (1,582.98 km) |
| Sliven to Ouistreham | 1,347.19 mi (2,168.10 km) |
| Sliven to Oullins | 1,083.13 mi (1,743.13 km) |
| Sliven to Outreau | 1,288.61 mi (2,073.81 km) |
| Sliven to Oyonnax | 1,045.72 mi (1,682.93 km) |
| Sliven to Ozoir-la-Ferriere | 1,210.00 mi (1,947.30 km) |
| Sliven to Pace | 1,405.74 mi (2,262.33 km) |
| Sliven to Palaiseau | 1,228.57 mi (1,977.19 km) |
| Sliven to Pamiers | 1,247.11 mi (2,007.03 km) |
| Sliven to Panazol | 1,251.90 mi (2,014.75 km) |
| Sliven to Pantin | 1,224.03 mi (1,969.88 km) |
| Sliven to Paray-le-Monial | 1,119.97 mi (1,802.41 km) |
| Sliven to Parempuyre | 1,345.83 mi (2,165.91 km) |
