| Difficult Run to Wichita (Kansas) | 1,085.42 mi (1,746.81 km) |
| Difficult Run to Wichita Falls (Texas) | 1,224.20 mi (1,970.16 km) |
| Difficult Run to Wickliffe (Ohio) | 286.62 mi (461.27 km) |
| Difficult Run to Wildomar (California) | 2,235.31 mi (3,597.38 km) |
| Difficult Run to Wildwood (Florida) | 748.74 mi (1,204.99 km) |
| Difficult Run to Wildwood (Missouri) | 717.69 mi (1,155.01 km) |
| Difficult Run to Wilkes-Barre (Pennsylvania) | 179.74 mi (289.26 km) |
| Difficult Run to Wilkinsburg (Pennsylvania) | 171.48 mi (275.97 km) |
| Difficult Run to Williamsburg (Virginia) | 118.02 mi (189.94 km) |
| Difficult Run to Williamsport (Pennsylvania) | 162.39 mi (261.34 km) |
| Difficult Run to Williamstown (New Jersey) | 137.79 mi (221.75 km) |
| Difficult Run to Willimantic (Connecticut) | 333.16 mi (536.17 km) |
| Difficult Run to Williston (North Dakota) | 1,454.69 mi (2,341.10 km) |
| Difficult Run to Willmar (Minnesota) | 1,002.76 mi (1,613.79 km) |
| Difficult Run to Willoughby (Ohio) | 285.93 mi (460.15 km) |
