In G3.5, there are a number of different options for setting your view of your model. If you choose the one that always keeps the ground in the view, you have no problem knowing where the runway is.

It seems more realistic to me to have the ground always in view since it provides an orientation that none of the sims provide very well. Sitting at an immovable monitor really won't ever simulate standing in a field and turning to face your airplane as you fly around.

It's actually no problem if you're familiar with the settings in the simulation.