Answer:

ironmen

Answer	Crossword Clue
IRONMEN	Annual triathlon competitors
IRONMEN	Triathletes
IRONMEN	Athletes with great endurance

IRONMEN	Dollars: 2 facetious wds.
IRONMEN	Workhorses
IRONMEN	Triathlon athletes
IRONMEN	Herculean athletes
IRONMEN	Tireless ones
IRONMEN	Durable athletes