| Boulder to Sacile | 5,362.55 mi (8,630.19 km) |
| Boulder to Sala Consilina | 5,751.14 mi (9,255.57 km) |
| Boulder to Salemi | 5,782.72 mi (9,306.39 km) |
| Boulder to Salerno | 5,707.31 mi (9,185.03 km) |
| Boulder to Salo | 5,314.20 mi (8,552.38 km) |
| Boulder to Salsomaggiore Terme | 5,333.34 mi (8,583.17 km) |
| Boulder to Saluzzo | 5,253.61 mi (8,454.88 km) |
| Boulder to Salzano | 5,371.24 mi (8,644.18 km) |
| Boulder to Samarate | 5,252.97 mi (8,453.84 km) |
| Boulder to San Benedetto del Tronto | 5,561.00 mi (8,949.57 km) |
| Boulder to San Biagio di Callalta | 5,372.52 mi (8,646.23 km) |
| Boulder to San Bonifacio | 5,349.60 mi (8,609.36 km) |
| Boulder to San Casciano in Val di Pesa | 5,432.17 mi (8,742.23 km) |
| Boulder to San Cataldo | 5,843.44 mi (9,404.11 km) |
| Boulder to San Cesareo | 5,580.63 mi (8,981.16 km) |
