Not looking good for running

This weekend I went on a fantastic trip to Belleville with some friends to let our horses jump some cross country jumps.  For my horse they were about 3' high (not big) but they don't fall down and they require a slightly different ride than regular show jumping jumps.  Riley loved it and as always exceeded all expectations.  The coach was very impressed with him and her husband was pretty much drooling over him as he is the type of horse he used to ride.   Long legs, short back and super athletic.  I surprised myself by riding well - the running as increased my fitness alot.  I am committed to the Houston marathon but I'm not out to set the world on fire.  I will shoot for a PR (ie breaking 3:30) but I think it needs to be a little more fun than the last session.  After Houston is done, I'm going to seriously reevaluate what I want to do with myself.  Right now my running vacation has ended and it's time to get back in the running saddle.  I have enjoyed this 6 weeks a ton and wish it could go on.