Longest marathon cello playing
Who
Carel Henn
What
26 hour(s):minute(s):second(s)
Where
Canada (Bonnyville)
When
Age Restriction: Applications for this record title will only be accepted if the applicant is 16 years of age or over.

The longest marathon cello playing is 26 hours, and was achieved by Carel Henn (South Africa) in Bonnyville, Alberta, Canada, from 19 to 20 December 2014.

The attempt was a fundraiser to raise funds for Bonnyvile Baptist Church.