This two/three-day trek begins from the Bonacaud forest office, located about 60km from Thiruvananthapuram. The base camp at Athirumala is located about 15 km from here. Depending on how fast you trek, you can complete this leg of the journey within a few hours or take the whole day. The second leg of the journey from Athirumala to the peak is more difficult and requires you to scale about a 1000 metres.