| Walnut Creek to Mendota (California) | 120.91 mi (194.59 km) |
| Walnut Creek to Mendota Heights (Minnesota) | 1,564.05 mi (2,517.10 km) |
| Walnut Creek to Menifee (California) | 398.25 mi (640.92 km) |
| Walnut Creek to Menlo Park (California) | 30.78 mi (49.53 km) |
| Walnut Creek to Menomonee Falls (Wisconsin) | 1,804.88 mi (2,904.68 km) |
| Walnut Creek to Menomonie (Wisconsin) | 1,623.93 mi (2,613.47 km) |
| Walnut Creek to Mentor (Ohio) | 2,156.39 mi (3,470.38 km) |
| Walnut Creek to Mequon (Wisconsin) | 1,811.87 mi (2,915.93 km) |
| Walnut Creek to Merced (California) | 94.92 mi (152.76 km) |
| Walnut Creek to Mercedes (Texas) | 1,622.56 mi (2,611.25 km) |
| Walnut Creek to Mercer Island (Washington) | 667.77 mi (1,074.67 km) |
| Walnut Creek to Mercerville (New Jersey) | 2,514.72 mi (4,047.06 km) |
| Walnut Creek to Meriden (Connecticut) | 2,593.73 mi (4,174.20 km) |
| Walnut Creek to Meridian (Idaho) | 492.49 mi (792.58 km) |
| Walnut Creek to Meridian (Mississippi) | 1,911.81 mi (3,076.76 km) |
