The devotees are expected to follow a Vratham (41-day austerity period) prior to the pilgrimage.[4] This begins with wearing of a special Mala (a chain made of Rudraksha or Tulasi beads is commonly used, though still other types of chains are available.). During the 41 days of Vratham, the devotee who has taken the vow, is required to strictly follow the rules that include follow only a lacto-vegetarianism diet, follow celibacy, follow teetotalism, not use any profanity and have to control the anger, allow the hair and nails to grow without cutting. They must try their maximum to help others, and see everything around them as lord Ayyappa. They are expected to bath twice in a day and visit the local temples regularly and only wear plain black or blue colored traditional clothing. Saffron colored dresses are worn by Sannyasi who have renunciated material life. But, many devotees still continue to wear saffron colored clothes which becomes a part of Vedic culture which connects the whole Hindus worldwide.
Hundreds of devotees still follow the traditional mountainous forest path (approximately 61 km) from Erumely,12.8 km from Vandiperiyar and 8 km from Chalakayam, believed to be taken by Ayyappa himself. The Erumely route starts from Erumely to Aludha river, then crosses the Aludha mountain to reach Karivilam thodu. Now comes the sacred Karimala crossing, from there to Cheriyanavattom, Valliyanavattom and finally Pamba River. Then they have to climb Neelimala and enter into the Ganesha-Bettam, Shreerama-Betta Padam. Then comes the Aranmula kottaram, which is one of the stops of holy journey 'Thiruvabharana Ghoshayatra' (the grand procession of the divine jewelery).
These days people use vehicles to reach the Pamba River by an alternate route. From Pamba, all the pilgrims begin trekking the steep mountain path of Neeli Mala till Sabari Mala. This route is now highly developed, with emergency shops and medical aid by the sides, and supporting aid is provided to the pilgrims while climbing the steep slope, which used to be a mere trail through dense jungle. The elderly pilgrims are lifted by men on bamboo chairs till the top, on being paid.