You cannot? Have you actually tried? Because a lot of people have and no one seemed to have problems with it that's why I want to start a campaign to pay a trip for all flatards so they can see, feel and smell the trip by themselves, you down or what?
We can just select 2 points and calculate the distance on a flat earth map and then you will see how long it takes us to get there.
Or we could just go to the edges and fly around them till we get back, that would prove the earth is flat. hehe I'm looking forward to our trip