noun
a track-and-field contest made up of seven events, typically consisting of the 100-meter hurdles, high jump, shot put, 200-meter dash, long jump, javelin throw, and 800-meter run
She trained rigorously for the upcoming heptathlon competition.
He's been getting ready for the heptathlon event next month.
She's a beast at the heptathlon!
Navigating through all the tasks at work felt like a heptathlon.