Here's why:
* Built for Speed: Polar bears have evolved to be efficient runners on ice and snow. Their long legs, large paws, and streamlined bodies are perfect for covering long distances quickly.
* Short Sprints: While polar bears can maintain a decent speed for a long time, they are also capable of short bursts of incredible speed when necessary.
* Grizzly's Strength: Grizzly bears are incredibly strong and powerful, but their build is more suited for digging and climbing than running at high speeds.
While both are impressive animals with remarkable abilities, the polar bear takes the crown in a race.