| Boulder to Petersburg (Virginia) | 1,510.46 mi (2,430.86 km) |
| Boulder to Pflugerville (Texas) | 789.14 mi (1,270.00 km) |
| Boulder to Pharr (Texas) | 1,040.07 mi (1,673.83 km) |
| Boulder to Phelan (California) | 776.58 mi (1,249.78 km) |
| Boulder to Phenix City (Alabama) | 1,238.69 mi (1,993.47 km) |
| Boulder to Philadelphia (Pennsylvania) | 1,586.05 mi (2,552.50 km) |
| Boulder to Phillipsburg (New Jersey) | 1,576.13 mi (2,536.54 km) |
| Boulder to Phoenix (Arizona) | 584.27 mi (940.30 km) |
| Boulder to Phoenixville (Pennsylvania) | 1,564.43 mi (2,517.71 km) |
| Boulder to Picayune (Mississippi) | 1,093.81 mi (1,760.31 km) |
| Boulder to Pickerington (Ohio) | 1,187.69 mi (1,911.40 km) |
| Boulder to Pico Rivera (California) | 820.64 mi (1,320.69 km) |
| Boulder to Piedmont (California) | 923.74 mi (1,486.61 km) |
| Boulder to Pierre (South Dakota) | 392.35 mi (631.42 km) |
| Boulder to Pike Creek Valley (Delaware) | 1,559.92 mi (2,510.45 km) |
