The milky way is about 150,000-180,000 light-years in diameter and on average about 1,000 light-years thick. Thus by the shortest route (as Earth is embedded in the middle of a spiral arm), it would take 500 years moving at the speed of light to exit the galactic structure.
the earth is part of the milky way galaxy if that was your question.
more than a lifetime
We're not sure where you posted the question from, but we on earth are not burdened with such a question, as we are already located in the Milky Way.
genius child... you r in the milky way... right now...
It takes 225 MILLION Earth years for the sun to orbit the center of the Milky Way once.
As long as you like.
About 200-250 million earth years. This is known as a Cosmic Year or a Galactic Year,
Once around the Milky Way would take about 225 -> 250 million years.
At the speed of light: About 100,000 years.
A long time
The Milky Way galaxy will never reach the "Great Atttractor".
About 250 million years.