User blog comment:LordFrz/Why not go the other way/@comment-112.200.67.119-20100924235409

redline is like the prime meridian and grandline is the equator (or the other way around)....so BONEHEAD is right about that they hit each other twice....the first hit is the passage to grandline itself (at reverse mountain and the second hit is on mariejoia (or in the fishman island...4 blue sea pirates need to use the reverse mountain or calm belt(but calm belt is almost impossible because of seakings and no air current). I agree with anonymous user (second from me) that if they dont use the reverse mountain it can be consider as cheating