London, Sep 3 (Inditop.com) Pop diva Madonna, known for her well-toned physique and strict diet and exercise regime, is now training to run a 151-mile marathon.

The 51-year-old singer will be taking part in Marathon des Sables in Morocco, which is due to take place in next April, reported contactmusic.com.

“She’s always been in great shape, but she is now taking things to a whole other level. She is serious about doing it,” said a source.

The singer is so keen to win that she has warned her management to keep her schedule free for the whole month.