Across The Years

Across The Years runs in Phoenix, Arizona, from December 27 to December 31, 2026. It is a fixed-time ultrarunning event with an unusually deep menu of formats: timed races of 6, 12, 24, 48 and 72 hours, along with longer multi-day options, a 100 Miler, a Marathon (26.2 miles) and a Last Man Standing race. You choose your clock, and the distance is whatever you can cover within it.

Fixed-time racing is a discipline of its own. Instead of pacing toward a finish line, you manage eating, feet and sleep over hours or days, and the runners who do best are usually the ones who walk early and often rather than the ones who start fast. If you are moving up from the marathon, the 6- or 12-hour race is the sensible entry point; build with back-to-back long runs on tired legs and rehearse your nutrition until it is boring.