Steve Fabes is geared to go as he poses with his bicycle outside St Thomas’s Hospital in London on Tuesday (January 5).

The young doctor has set off on a five-year solo journey to cycle the length of six of the world’s seven continents, all in aid of health charity Merlin.

While others are attempting to keep their New Year’s resolutions with a weekly trip to the gym, Steve will be burning up to 6000 calories every day.

Traveling up to 100 miles between dawn and dusk, over five years he will cover 50 000 miles — a distance equivalent to twice the circumference of the earth.

The round-the-world trip will see Steve cycle through over 60 countries, from Australia to Sudan and Zambia.

Steve aims to raise $80 000 to support the charity’s life saving work.