Where is Dallam?

Dalhart25.6 km · 15.9 mi → Stratford47.9 km · 29.8 mi → Hartley48.7 km · 30.3 mi → Cactus59.4 km · 36.9 mi → Sherman County63.5 km · 39.5 mi → Channing70.5 km · 43.8 mi → Dumas72.8 km · 45.2 mi → Sunray75.6 km · 47.0 mi → Moore80.4 km · 49.9 mi → Oldham97.1 km · 60.3 mi → Gruver107.2 km · 66.6 mi → Hansford111.8 km · 69.5 mi →

Abernathy33.83230, -101.84295 → Abilene32.44874, -99.73314 → Abram26.19980, -98.41113 → Addison32.96179, -96.82917 → Agua Dulce31.65511, -106.13887 → Alamo26.18369, -98.12306 →