The shape of an athletics track is sometimes incorrectly referred to as oval, but an oval is literally an egg shape with no straight sides. Is there a geometric name for a rectangle with semicircular ends?

1. Standard IAAF / Olympic / NCAA, 400 meter running track
A Standard 400-meter running track is the quintessential oval shape that most of us think of when we hear the word "track." This size is regulated by the International Association of Athletics Federations (IAAF), and it's the minimum size required to host official competitions.

oval 1 of 2 noun
Synonyms of oval
1 : an oval figure or object
2 : a racetrack in the shape of an oval or a rectangle having rounded corners oval

oval 2 of 2 adjective
: having the shape of an egg
also : broadly elliptical