Youngest Person to Complete a Marathon on All Seven Continents

Mark Sinclair; Seven Continents; March 26, 2005.

Mark Sinclair (UK, b. 4 April 1980) is the youngest person to have competed in and completed a marathon on each continent. He completed the feat on March 26, 2005 at the age of 24 years 356 days.

Source: Guinness World Records 2007

Youngest Composer of a Musical

Adám Lörincz; Hungary; August 16, 2002.

Adám Lörincz (Hungary, b. 1 June 1988) was aged 14 years 76 days when his 92-minute musical, Star of the King was performed on August 16, 2002 in Szekesfehervar, Hungary.

Source: Guinness World Records 2007

Oldest Performing Ballerina

Charin Yuthasastrkosol; Albuquerque, New Mexico, USA; July 21, 2002.

Charin Yuthasastrkosol (USA) (b. Thailand, December 30, 1930) began ballet lessons at the age of 47. She now performs regularly at galas, her most recent being a performance for Sakthip Krairikish, Thailand's Ambassador to the USA at Albuquerque, New Mexico, USA on July 21, 2002 at the age of 71 years 203 days.

Source: Guinness World Records 2007

Oldest Professional Chorus Line

Tivoli Lovelies; Melbourne, Victoria, Australia; October 12, 2004.

The combined age of the 10 dancers from the touring chorus line of The Tivoli Lovelies (Australia), based in Melbourne, Victoria, Australia, is 746 years 147 days as of October 12, 2004.

Source: Guinness World Records 2007