Hyperloop One, a startup that’s working on building high-speed, low-pressure, tube-based rail transportation, announced Thursday morning that it had chosen 10 routes around the world that it will study as potential locations for a Hyperloop. The startup solicited route ideas back in May as part of what it called the “Hyperloop One Global Challenge.”

One route, however, was chosen for a headliner feasibility study that will be conducted with Colorado’s Department of Transportation (CDOT) and Aecom, a multinational engineering firm: Pueblo-Denver-Cheyenne. Hyperloop One says that route would span 360 miles and be accessible to about 4.8 million people. (This reporter lives in Denver and has been stuck in enough I-25 traffic that she would love to see an alternative for that artery up the Front Range, no matter how far-fetched.)