Longest marathon playing keyboard / piano by an individual
- Romuald Koperski
- 103/8 day(s), hour(s), minute(s)
- Poland Gdansk
The longest marathon playing piano lasted 103 hr 8 sec and was completed by Romuald Koperski (Poland) at Alfa Centrum, Gdansk, Poland from 27 - 31 January 2010. The attempt was timed by Tissot of Switzerland, and was officially started by Danuta Walesa, the Polish First Lady.