sport
[spawrt, spohrt] Show IPA
noun
1.
an athletic activity requiring skill or physical prowess and often of a competitive nature, as racing, baseball, tennis, golf, bowling, wrestling, boxing, hunting, fishing, etc.
2.
a particular form of this, especially in the out of doors.
3.
diversion; recreation; pleasant pastime.
Every single definition of sport includes motor racing as a sport.
Yes, high temperature is a factor, but the suits and undergarments are especially made for the circumstances, and they have a water tube to keep hydrated throughout the race. The worst part however, is the strain of the huge G-Forces their body has to endure, which is similar to what fighter jet pilots experience.Because it's hot in the car and the suits don't breathe so they sweat a lot. It's not physically demanding beyond that.
Huge mental concentration and skill, for sure.