Siliguri, Feb 04 (ANI): The three-day long Indo-Bhutan car rally covering Himalayan ranges kicked off on Wednesday (February 04) from Siliguri town in West Bengal. The rally has been organized by Friendship Car Rally Association of India and Bhutan Friendship Association to strengthen relations between the two neighbours. The car rally, which is being held after two years gap, would cover a distance of 850 kilometers and would culminate in Bhutan's capital, Thimphu. Twenty participants from India and ten from Bhutan are taking part in this mega event. The extremely challenging route of pristine foothills and forests crisscrossed by rivers and mountain streams and high Himalayan passes of altitude of up to 13000 feet make the drive thoroughly adventurous. The rally is the biggest motor sports event in Eastern India and one of the only three International events being held in Indian sub-continent.