| Walnut Creek to Maryland Heights (Missouri) | 1,703.72 mi (2,741.88 km) |
| Walnut Creek to Marysville (California) | 89.78 mi (144.49 km) |
| Walnut Creek to Marysville (Ohio) | 2,064.83 mi (3,323.03 km) |
| Walnut Creek to Marysville (Washington) | 703.29 mi (1,131.84 km) |
| Walnut Creek to Maryville (Missouri) | 1,460.30 mi (2,350.12 km) |
| Walnut Creek to Maryville (Tennessee) | 2,095.74 mi (3,372.77 km) |
| Walnut Creek to Mason (Ohio) | 2,024.53 mi (3,258.17 km) |
| Walnut Creek to Mason City (Iowa) | 1,549.12 mi (2,493.07 km) |
| Walnut Creek to Massapequa (New York) | 2,571.32 mi (4,138.13 km) |
| Walnut Creek to Massapequa Park (New York) | 2,572.19 mi (4,139.54 km) |
| Walnut Creek to Massillon (Ohio) | 2,154.75 mi (3,467.74 km) |
| Walnut Creek to Mastic (New York) | 2,601.15 mi (4,186.15 km) |
| Walnut Creek to Mastic Beach (New York) | 2,602.34 mi (4,188.06 km) |
| Walnut Creek to Matteson (Illinois) | 1,827.70 mi (2,941.39 km) |
| Walnut Creek to Matthews (North Carolina) | 2,284.50 mi (3,676.55 km) |
