Its goes faster to cross the runway to the left than to stay on the right side, as I start on the right side ??? 
Well i´ll give it a shot, THX !! 
BTW last time I tried, the plane lift off when I just passed that red/white "watertank"   
EDIT : like this  
I hit full throttle when mission started and then just went straight ahead, just to make sure I didnt loose speed when steering, and this is as far as I get, sometimes I get as far as the barrels in the back, but never closer than that. 
 
click to see full pic