The maximum number of girls you can have sex with to reach the goal of the One Tonne Challenge is 10. On average this would be 220 lbs each. Relations with over 10 females to reach the 2200 lb goal will result in disqualification.
You can divide your females up as you wish in order to reach the weight goal.
Eg. If you go under weight on some, say 180 lbs, you will have to compensate with a larger girl to even out, say 26o lbs.
The first person to reach the weight goal, while keeping their number of companions to under 10 is declared the winner.