I've ridden Muenster (Red River) and Barnwell many times. Barnwell is very different from Muenster, but it's a great place to ride. There's a long (30 miles?) single-track loop that goes around the park. Lots of elevation changes. There are fast trails, slow trails, awesome hill-climbs, and nice facilities (restrooms). They've held some races there (GNCC I think?). It's a nice alternative to Muenster.
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Seldon
Wylie, TX
1997 XR650L