Fastest relay 100 x 5 kilometres

According to Official Guinness Records,

The fastest 100 x 5 km relay was completed in 30 hr 1 min 15.3 sec by the Greenville Track Club (USA), at Eastside High School in Greenville, South Carolina USA, from 21 to 22 May 2011.
A USATF certified official was present during the attempt and verified the validity of the baton passes.

For a complete list of 2011 records, please visit 2011 Guinness Records in United States.

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