Longest marathon playing tennis, singles

According to Official Guinness Records,

The longest marathon playing tennis, singles is 79 hr 9 min and was achieved by Christian Masurenko and Dennis Heitmann (both Germany), in Twistringen/Altenmarhorst, Germany, from 27 to 30 July 2017. The record attempt was held in order to raise money for the panned village hall of Marhorst.

For a complete list of 2017 records, please visit 2017 Guinness Records in Germany.

Related Images

Other Germany records that might interest you:

• Most kisses received in thirty seconds
• Largest hamburger
• Most people doing crosswords simultaneously
• Largest flag flown while skydiving (parachute jump)
• Most stairs descended in a wheelchair in one hour
• Most consecutive bench presses underwater