Fahmi, study these illustrations carefully. I hope that you have at least one hand pump between 4 of you, and have learned how to change tubes
if you get a puncture. In any case, the handpump won't give you sufficient pressure and you would still need to stop at a petrol station to pump up
your tyres to recommended pressure (~90-100psi, the fatter the tyres the lower the pressure). For 1600km End-to-End cycling, I don't think you can escape
not having a puncture. More illustrations to come. CLICK ON THUMBNAILS FOR DETAILED EXPLANATIONS.