The term TRIATHLON NEEDS can be broken down into two crossword solutions: BIKES (5 letters) and NEEDS (5 letters). A triathlon is an endurance event that consists of three consecutive races: swimming, cycling, and running. Therefore, the solution BIKES indicates that a participant in a triathlon NEEDS a bicycle for the cycling portion of the race. The solution NEEDS implies that a participant in a triathlon NEEDS to have the necessary equipment and supplies to complete the race.