Complex sentence: According to Ruth Gerson and numerous other sources the festival was then moved to Sarin proper after the initial years and elephants trainers had to travel 60 miles to Surin to take part in the festival.
Split into simpler sentences: According to Ruth Gerson and numerous other sources the festival was then moved to Sarin proper after the initial years. Nowadays elephants and their trainers travel 60 miles to Surin to take part in the festival.