Tiers
Four standard tiers, measured by how many times you summit each of the four Phoenix peaks between 5am and 11pm, plus the Ultra, a class of its own.
Uno Fresco
The entry tier. Summit each of the four peaks once, same day.
Dos Caliente
Two summits of every peak, one clock. Things start heating up.
Tres Locos
Three summits of every peak between 5am and 11pm. Legs and logistics both get tested.
El Cuatro
Four summits of every peak, in any order, between 5am and 11pm.
The Ultra
Phoenix Phearsome Phour 70K
The full send: all four summits connected into one continuous 70.4 km route, completed between 5am and 11pm.