SortStack #1868 — 2031-07-21

By size · Order from shortest to longest.

1. An acoustic guitar 99 cm

   The guitar's hollow body acts as an amplifier, resonating the strings' vibration into the air around it.

2. A one-person kayak 3.4 m

   The kayak was invented by Arctic peoples thousands of years ago, sealed with animal skin to stay watertight.

3. Lake Geneva (length) 73 km

   Shared by Switzerland and France, its waters take over a decade to fully cycle through and renew.

4. The Panama Canal 85 km

   Ships are lifted 26 metres above sea level by locks, then lowered again, crossing a continent without touching the ocean between.

5. The Suez Canal 193 km

   It has no locks because the Mediterranean and Red Sea sit at almost exactly the same level.

6. The Trans-Siberian Railway (length) 9.3K km

   The longest railway on Earth, a single trip from Moscow to Vladivostok takes about seven days without stopping.

← All puzzles · Play today’s SortStack