It is a great place to get into shape. Has a wonderful view and the people you meet are friendly. It offers some great climbs. Otter creek has a lot to offer no matter wheret your conditioning or riding level are at. I've riden in Germany, TX, AL, OH and find this trail to be one of the best ever.
Blue trail is the longest loop out of three, others are yellow and red.
All are good. You have to ride all three to get in over 20 or 25miles. Otter Creek is a great place to ride it has all the good stuff like lots of rocks ,good climbs ,technical sections,fast single track,and enough speed to get your adrenaline going. In fact every time I've been there, at some point during the ride,I just start raging out of control,but still in control if you know what I mean. No seriously this trail will put a smile on your face.