Despicable Me: Minion Rush

the beach is the second area. you need to run 100,000 meters. this is not so much a solution as a this is where you go, just keep plating the level and try to unlock all the fruits, not because you need to but because it will pass the time. any abilities you use will add meters, and level 11 has a counter on the bottom due to the task you need to complete if it's the same for everyone

The requirement for this achievement is simple and as mereel1 has stated, the minion beach is the second area.
However: If you want to complete this game, it is very unnecessary to go for the 100.000meters just by running in this area. There will be many other opportunities to run in minion beach on your way to the 25th area by spinning the wheel and getting minion beach in the 'random world' areas (like area 13, an area which is blue and has little details when looking at it in the Jelly lab).

I was in area 13 at the moment it popped and have gotten most of the work done by naturally progressing in area 2 and the rest by getting the minion beach through spinning the wheel and running in a single event.