Longest line of postcards

According to Official Guinness Records,

The longest line of postcards consists of 17,636 postcards, achieved by Carnival (UK), in Southampton, UK, on 16 May 2018.The postcards were laid on the floor of the atrium in Carnival UK headquarters in a snaking line which measured 2,299 m.

For a complete list of 2018 records, please visit 2018 Guinness Records in United Kingdom.

Other United Kingdom records that might interest you:

• Most one handed chest to ground burpees in one minute (male)
• Fastest time to dress in cricket whites (batsman gear)
• Fastest marathon dressed as a love heart (male)
• Fastest marathon in a wedding dress (male)
• Fastest marathon dressed as a lifeguard (female)
• Largest game of musical bumps
• Most pine boards broken in one minute with one hand (female)
• Fastest marathon wearing flip flops
• Oldest person to ride a zip wire (zip line)