I got it last year, and will this year. It is so different than WDW. Not nearly as organized, and not quite as scenic of a course. Most of the course is through industrial areas and it was neat to run through Angel Stadium but that apparently doesn't happen each year. I think the DL Half is more a test of will than the WDW races. You just don't have the distractions. They have characters every once in a while but not even close to the amount at WDW. But, they have more people cheering you on the entire course which is a nice feature. I agree with Frank that it has more of the feel of most of the races out there. We get spoiled at WDW!
It is still nice, but you definitely earn that Coast to Coast medal running it!