Marathon Training with Team Rogue for CIM

I'll be training the next several months with Team Rogue for a Dec marathon (most likely CIM).  The team officially started 2 weeks ago, though, this is my first week.  Being my first day, I decided to run the 10 mile route since I knew that distance was easily doable.  Didn't wear a watch, so I can't report any of those stats.  I can, however, report that the heat/humidity did not affect me nearly as much. Either my body has adapted or the humidity/dew point has decreased.  Don't know which, who knows, maybe both.