I would like to know when and where the next olympics be held at in the next 4 years since its in london in 2012

In Rio De Janeiro, Brazil.

If you're being pedantic the next Olympics will be the 2014 Winter Olympics in Sochi, Russia If you mean specifically the next Summer Olympics then the above is correct.

Rio de Janeiro

Rio de Janiero

I would like to know when and where the next olympics be held at in the next 4 years since its in london in 2012