SortStack #246 — 2027-02-10

By speed · Order from slowest to fastest.

1. The creep of a mountain glacier 175320 mm/year

   Glaciers flow downhill under their own weight like very slow rivers of ice, grinding valleys as they go.

2. A chameleon on the move 350 m/h

   A chameleon's eyes swivel independently, so it can watch two directions at once before its slow, swaying steps.

3. A casual cyclist 12.5 km/h

   The bicycle is one of the most efficient machines ever made, turning muscle into distance better than walking.

4. A running pig 17 km/h

   Pigs are smarter than dogs by many measures, able to learn their names and even play simple video games.

5. A falling raindrop 34 km/h

   Raindrops are not teardrop-shaped; they flatten into tiny hamburger buns as they fall through the air.

6. An IndyCar on an oval 390 km/h

   IndyCars on superspeedways run flat-out for hours, with drivers enduring forces that strain the neck lap after lap.

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