At how many miles per hour does a plane travel?

That depends how many hours you travel at that speed.

As long and as far as your gas, water, food, and interest hold out.

As many as you want. More miles will take more time. For every hour you spend doing it, you can travel 70 miles.

Distance = Rate * Time Distance = 52.5 mph * 6.75 hours = 354 miles traveled ---------------------------

2,500 / 55 = 45.455 hours (rounded)