| Mission to Sesena | 5,303.41 mi (8,535.01 km) |
| Mission to Sestao | 5,249.29 mi (8,447.92 km) |
| Mission to Sevilla | 5,266.65 mi (8,475.85 km) |
| Mission to Sevilla La Nueva | 5,280.75 mi (8,498.55 km) |
| Mission to Silla | 5,483.72 mi (8,825.19 km) |
| Mission to Silleda | 5,018.87 mi (8,077.09 km) |
| Mission to Sitges | 5,532.56 mi (8,903.80 km) |
| Mission to Socuellamos | 5,369.86 mi (8,641.95 km) |
| Mission to Soller | 5,620.10 mi (9,044.67 km) |
| Mission to Solsona | 5,496.14 mi (8,845.18 km) |
| Mission to Son Servera | 5,655.91 mi (9,102.31 km) |
| Mission to Sonseca | 5,302.14 mi (8,532.97 km) |
| Mission to Sopelana | 5,248.61 mi (8,446.82 km) |
| Mission to Soria | 5,316.67 mi (8,556.36 km) |
| Mission to Suances | 5,197.62 mi (8,364.75 km) |
