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'''The incredibly scenic bike route from Sambava to Andapa can be a challenging one, not because of the road condition or necessarily the 110-kilometre distance, but because of the gradually increasing intensity and regularity of uphills, especially along the final 20 kilometres. The rough stone tarmac road is in perfect condition and passing cars are few and far between.'''

After about eight kilometres along the RN5a from Sambava, turn left at the crossroad village of [[Ambariomihambana]] where the RN3b way to Andapa begins.