| Round Rock to Iver | 4,883.45 mi (7,859.16 km) |
| Round Rock to Ivybridge | 4,779.76 mi (7,692.27 km) |
| Round Rock to Jarrow | 4,748.52 mi (7,642.00 km) |
| Round Rock to Johnstone | 4,616.89 mi (7,430.16 km) |
| Round Rock to Kearsley | 4,755.30 mi (7,652.91 km) |
| Round Rock to Keighley | 4,763.38 mi (7,665.92 km) |
| Round Rock to Kempston | 4,866.53 mi (7,831.92 km) |
| Round Rock to Kendal | 4,719.90 mi (7,595.95 km) |
| Round Rock to Kenilworth | 4,818.86 mi (7,755.20 km) |
| Round Rock to Kenley | 4,905.24 mi (7,894.21 km) |
| Round Rock to Kensington | 4,896.41 mi (7,880.00 km) |
| Round Rock to Kenton | 4,889.21 mi (7,868.42 km) |
| Round Rock to Kettering | 4,849.77 mi (7,804.96 km) |
| Round Rock to Kew Green | 4,894.14 mi (7,876.36 km) |
| Round Rock to Keynsham | 4,808.54 mi (7,738.60 km) |
