You can get get to the Templo Do Ser by bicycle. Leaving the ferry, head towards the south of Ilhabela, go through Portinho beach, go through the entrance to the Três Tombos waterfall and take the next left on Av. Engenho Velho. Unfortunately there is still no bike path in this area, so be careful when cycling in traffic. Ah, there are many ups and downs along the way, so be prepared for the effort of the ride.