Prime Minister Dr Mahathir Mohamad surprised folks in Putrajaya when he decided to go on an 11km morning bike ride today.

In a brief video posted on his official YouTube channel, the prime minister was pictured gamely riding in a bicycle helmet, shadowed closely by an entourage also on their bikes.

The prime minister grinned broadly and acknowledged passers-by who were stunned to see the 94-year-old leader on a casual ride.