| Gaithersburg to Pottsville (Pennsylvania) | 119.29 mi (191.97 km) |
| Gaithersburg to Poughkeepsie (New York) | 247.52 mi (398.35 km) |
| Gaithersburg to Poulsbo (Washington) | 2,319.56 mi (3,732.97 km) |
| Gaithersburg to Poway (California) | 2,245.18 mi (3,613.28 km) |
| Gaithersburg to Powder Springs (Georgia) | 551.62 mi (887.75 km) |
| Gaithersburg to Powell (Ohio) | 320.26 mi (515.42 km) |
| Gaithersburg to Powell (Tennessee) | 430.09 mi (692.17 km) |
| Gaithersburg to Prairie Ridge (Washington) | 2,298.03 mi (3,698.32 km) |
| Gaithersburg to Prairie Village (Kansas) | 933.35 mi (1,502.09 km) |
| Gaithersburg to Prairieville (Louisiana) | 988.23 mi (1,590.40 km) |
| Gaithersburg to Prattville (Alabama) | 692.89 mi (1,115.10 km) |
| Gaithersburg to Preakness (New Jersey) | 201.30 mi (323.96 km) |
| Gaithersburg to Prescott (Arizona) | 1,960.50 mi (3,155.12 km) |
| Gaithersburg to Prescott Valley (Arizona) | 1,953.30 mi (3,143.53 km) |
| Gaithersburg to Prichard (Alabama) | 844.91 mi (1,359.76 km) |
