Triathlons are not necessarily restricted to these prescribed distances. Distances can be any combination of distance set by race organizers to meet various distance constraints or to attract a certain type of athlete.
triaThLONs ARe Not neCEsSARilY ReSTRiCtED to ThesE PresCriBeD DIstanCes. distAnCEs Can be anY comBinATIon oF dIstance SET bY RaCe OrganiZerS to meet VArious distanCe constRaintS or To attrAct A certAIn Type Of aThLEte.