Which is longest?

Longest

1. 1
   🏃 A marathon 42.2 km

   This exact distance was first run at the 1908 London Olympics. Source

2. 2
   🌉 The Golden Gate Bridge (end to end) 2.7 km

   When it opened in 1937, it had the longest main span in the world. Source

3. 3
   🚢 The Titanic 269 m

   As long as about two and a half football pitches. Source

4. 4
   ⚽ A football (soccer) pitch 105 m

   FIFA recommends 105 × 68 m for top-level matches. Source

5. 5
   ✈️ A Boeing 747 jumbo jet 70.7 m

   It first flew in 1969, the same year as the Moon landing. Source

6. 6
   🏊 An Olympic swimming pool 50 m

   It holds about 2.5 million litres of water. Source

Shortest