LANGKAWI: A refreshed swim course and revamped cycling route await 1,900 athletes from 65 countries as Ironman Malaysia returns to Langkawi from Nov 19-22, offering competitors a new challenge at one of Asia's established long-distance triathlon events.

The four-day endurance showcase will feature three categories – Ironman Malaysia, Ironman 70.3 Langkawi and Ironkids Langkawi – with the two main races scheduled for Nov 21.

Malaysia once again leads the list of participating nations, followed by Japan, Singapore, the United Kingdom and Indonesia, while Australia, Thailand, India, Germany and France complete the top 10.

Among the major changes this year is the introduction of a new swim course at Pantai Tengah, with athletes beginning their race off Holiday Villa Resort and Beachclub Langkawi, surrounded by the island's coastal scenery and nearby Pulau Tepur islands.