| Boulder to Savannah (Georgia) | 1,448.24 mi (2,330.72 km) |
| Boulder to Sayreville (New Jersey) | 1,623.00 mi (2,611.96 km) |
| Boulder to Sayville (New York) | 1,684.17 mi (2,710.41 km) |
| Boulder to Scaggsville (Maryland) | 1,505.45 mi (2,422.79 km) |
| Boulder to Scarsdale (New York) | 1,645.86 mi (2,648.76 km) |
| Boulder to Schaumburg (Illinois) | 903.97 mi (1,454.81 km) |
| Boulder to Schenectady (New York) | 1,625.01 mi (2,615.21 km) |
| Boulder to Schererville (Indiana) | 935.83 mi (1,506.07 km) |
| Boulder to Schertz (Texas) | 823.93 mi (1,325.99 km) |
| Boulder to Schiller Park (Illinois) | 914.73 mi (1,472.11 km) |
| Boulder to Schofield Barracks (Hawaii) | 3,331.37 mi (5,361.32 km) |
| Boulder to Scotchtown (New York) | 1,611.14 mi (2,592.87 km) |
| Boulder to Scottdale (Georgia) | 1,233.21 mi (1,984.66 km) |
| Boulder to Scotts Valley (California) | 927.15 mi (1,492.11 km) |
| Boulder to Scottsbluff (Nebraska) | 152.04 mi (244.68 km) |
