Did he have enough air left to reach the surface?

Energy can take about a million years to reach the surface.

Something was trying to reach the surface of his mind.

Whether we reach the surface this year or next does not matter.

It would take a while for one of them to reach the surface.

I'll have enough time to reach the surface, where I hope to be safe.

It will be no trouble at all to reach the surface.

Besides, how did they figure she had reached the surface of Earth?

I'll be the first man to reach the surface of Venus.

When this happens, the cold water never reaches the surface.