| Idrija to Portage (Michigan) | 4,601.22 mi (7,404.95 km) |
| Idrija to Portage (Wisconsin) | 4,683.18 mi (7,536.86 km) |
| Idrija to Portales (New Mexico) | 5,663.28 mi (9,114.17 km) |
| Idrija to Porterville (California) | 6,059.60 mi (9,751.98 km) |
| Idrija to Portland (Maine) | 3,928.59 mi (6,322.45 km) |
| Idrija to Portland (Oregon) | 5,584.46 mi (8,987.33 km) |
| Idrija to Portland (Tennessee) | 4,900.89 mi (7,887.22 km) |
| Idrija to Portland (Texas) | 5,770.14 mi (9,286.14 km) |
| Idrija to Portsmouth (New Hampshire) | 3,974.03 mi (6,395.58 km) |
| Idrija to Portsmouth (Ohio) | 4,655.78 mi (7,492.75 km) |
| Idrija to Portsmouth (Virginia) | 4,468.89 mi (7,191.98 km) |
| Idrija to Post Falls (Idaho) | 5,316.41 mi (8,555.93 km) |
| Idrija to Potomac (Maryland) | 4,408.87 mi (7,095.39 km) |
| Idrija to Potomac Park (California) | 6,099.34 mi (9,815.93 km) |
| Idrija to Pottstown (Pennsylvania) | 4,291.07 mi (6,905.82 km) |
