Tough __; Intense Obstacle Course Event
This page is the CodyCross answer for the clue below from Prehistory, Group 1260, Puzzle 1 (Cliff Dwellers).
Question is: Tough __; Intense Obstacle Course Event
and the answer is: MUDDER
Word Meaning:
MUDDER — A racehorse that performs well on muddy or wet tracks.
Definitions from Wiktionary.