| Walnut Creek to Montgomeryville (Pennsylvania) | 2,486.20 mi (4,001.15 km) |
| Walnut Creek to Monticello (Minnesota) | 1,536.56 mi (2,472.85 km) |
| Walnut Creek to Montrose (Colorado) | 770.37 mi (1,239.79 km) |
| Walnut Creek to Moody (Alabama) | 2,002.89 mi (3,223.34 km) |
| Walnut Creek to Moore (Oklahoma) | 1,369.81 mi (2,204.49 km) |
| Walnut Creek to Moorestown-Lenola (New Jersey) | 2,504.57 mi (4,030.71 km) |
| Walnut Creek to Mooresville (North Carolina) | 2,268.89 mi (3,651.42 km) |
| Walnut Creek to Moorhead (Minnesota) | 1,423.27 mi (2,290.53 km) |
| Walnut Creek to Moorpark (California) | 305.92 mi (492.33 km) |
| Walnut Creek to Moraga (California) | 6.05 mi (9.74 km) |
| Walnut Creek to Moreno Valley (California) | 385.58 mi (620.53 km) |
| Walnut Creek to Morgan City (Louisiana) | 1,849.63 mi (2,976.69 km) |
| Walnut Creek to Morgan Hill (California) | 57.49 mi (92.53 km) |
| Walnut Creek to Morganton (North Carolina) | 2,218.79 mi (3,570.80 km) |
| Walnut Creek to Morgantown (West Virginia) | 2,249.88 mi (3,620.84 km) |
