An earliest contested date for aquathlon is hard to state due to it being a combination of swimming and running which both have ancient origins.

Within the pentathlon sport, the term biathle is also used for (training) races comprising swimming and running.

Another sport derived from triathlon is duathlon, which combines cycling and running but has omitted the swimming part.

The Splash and Dash Youth Series, organized by USA Triathlon, is a popular variant of aquathlons designed for young athletes aged 7-15.

These events combine swimming and running but do not require timing, emphasizing participation over competition.

The series, which has over 50 events across the United States, offers a low-barrier entry into multisport activities for children, promoting fun and fitness without the need for extensive equipment.