This guy takes exercise seriously -- even if it means jogging on ledge in KPE tunnel

Many running enthusiasts are usually on the lookout for new routes to step up their game but one man decided he would try running through a tunnel on the Kallang-Paya Lebar Expressway (KPE).

Stomper Grace was travelling through the tunnel on Wednesday (Dec 5) at about 8.39pm when she saw the man.

She snapped a photo of him and shared it with Stomp.

"We saw him running inside the KPE tunnel just before the PIE exit," she said.

The jogger was running along a ledge at the side of the tunnel.

"Maybe he mistook this as a running track," said Grace.

"His actions caused most vehicles to slow down or brake causing danger to all road users."