Henry Ernest Dudeney/Puzzles and Curious Problems/326 - Strange Though True

Puzzles and Curious Problems by Henry Ernest Dudeney: $326$

Strange Though True

There is a district in Sussex where any healthy horse can travel, quite regularly, $30$ miles per day,

yet while its legs on one side travel $30$ miles, the legs on its other side travel $31$ miles.

The horse, apparently, does not seem to mind this.

How can this be?

Sources

• 1932: Henry Ernest Dudeney: Puzzles and Curious Problems ... (previous) ... (next): Unclassified Problems: $326$. -- Strange Though True