| San Mateo to Petaluma (California) | 50.67 mi (81.55 km) |
| San Mateo to Petersburg (Virginia) | 2,442.33 mi (3,930.55 km) |
| San Mateo to Pflugerville (Texas) | 1,492.70 mi (2,402.27 km) |
| San Mateo to Pharr (Texas) | 1,612.38 mi (2,594.88 km) |
| San Mateo to Phelan (California) | 343.22 mi (552.36 km) |
| San Mateo to Phenix City (Alabama) | 2,125.24 mi (3,420.24 km) |
| San Mateo to Philadelphia (Pennsylvania) | 2,517.01 mi (4,050.74 km) |
| San Mateo to Phillipsburg (New Jersey) | 2,505.34 mi (4,031.96 km) |
| San Mateo to Phoenix (Arizona) | 636.51 mi (1,024.36 km) |
| San Mateo to Phoenixville (Pennsylvania) | 2,495.23 mi (4,015.69 km) |
| San Mateo to Picayune (Mississippi) | 1,920.09 mi (3,090.09 km) |
| San Mateo to Pickerington (Ohio) | 2,120.43 mi (3,412.50 km) |
| San Mateo to Pico Rivera (California) | 341.43 mi (549.47 km) |
| San Mateo to Piedmont (California) | 19.21 mi (30.91 km) |
| San Mateo to Pierre (South Dakota) | 1,235.58 mi (1,988.48 km) |
