| Sammamish to Olivares | 5,361.18 mi (8,627.98 km) |
| Sammamish to Olivenza | 5,260.41 mi (8,465.80 km) |
| Sammamish to Olot | 5,370.07 mi (8,642.30 km) |
| Sammamish to Onate | 5,175.86 mi (8,329.73 km) |
| Sammamish to Onda | 5,412.60 mi (8,710.73 km) |
| Sammamish to Onteniente | 5,465.73 mi (8,796.24 km) |
| Sammamish to Orihuela | 5,496.17 mi (8,845.23 km) |
| Sammamish to Osuna | 5,406.77 mi (8,701.36 km) |
| Sammamish to Ourense | 5,040.36 mi (8,111.68 km) |
| Sammamish to Oviedo | 5,051.12 mi (8,128.99 km) |
| Sammamish to Paiporta | 5,437.74 mi (8,751.20 km) |
| Sammamish to Pajara | 5,550.67 mi (8,932.95 km) |
| Sammamish to Palafolls | 5,406.90 mi (8,701.56 km) |
| Sammamish to Palafrugell | 5,404.73 mi (8,698.07 km) |
| Sammamish to Palamos | 5,407.82 mi (8,703.05 km) |
