Here's a travel guide on how to get from Davao to Siargao by bus and ferry. If you leave at night, the journey will take around 14 hours. If you travel during the day, the travel time will be longer.
Updated Ferry Schedule from Surigao to Siargao: escapemanila.com/2017/04/surigao-to-siargao-boat-schedule.html
Bus schedule from Davao to Butuan/Surigao: escapemanila.com/2017/02/davao-city-bus-terminal-schedule.html
