Skip, RouteMap's route guideUS Route Planner

Thornton, CO

united states

united states

Thornton sprawls across the northern Denver suburbs between I-25 and the eastern plains. Major routes include I-25 for north-south travel and US-36 connecting Denver to Boulder. The city grew rapidly from farmland starting in the 1990s and keeps its original 1956 water tower as a visible landmark from the interstate.