If you are training for the marathon, your time should be about 3% more than the combination of what you can run for the half.
Galen could have paced better and ran 61:30.
61.5(2)=123(1.03)=126.69.
Id say Galen is in 2:06:30-2:07 shape
He will make the team.
Houston was exactly what he needed.