Longest chess marathon
Who
Sjur Ferkingstad, Hallvard Haug Flatebø
What
56:09:37 hour(s):minute(s):second(s)
Where
Norway (Haugesund)
When

The longest chess marathon is 56 hr 09 min 37 sec, and was achieved by Hallvard Haug Flatebø and Sjur Ferkingstad (both Norway) in Haugesund, Norway, on 11 November 2018.


Hallvard and Sjur are both keen blitz chess players.