As Zander mentioned above, if you visit gtxtrails.org you can find a nifty interactive trail map.
The GTX Trails are designed to be fun, flowy, and fast. They are the yin to Lake Georgetown’s yang. What they lack in mileage, they make up for in quality. And the good news is, we build more tread every month.
Chautauqua (pronounced “Sh!t Taco”) is complete and is a fun diversion from the paved path in between Katy Crossing and Gotham. If you start at Katy Crossing Trail, head back upstream on paved path on the South Fork San Gabriel River, pass Blue Hole Park, and eventually you will hit Chautauqua; after that cross university (Hwy 29) bridge and dive down the concrete ramp, you will be at Gotham. An out and back route from Katy Crossing Trail to Gotham gives you over 10 miles (much is on paved path granted) but still a fun outing on the bike. Hope you have a great time! Post back here and tell us what you think!
see attached screenshot for map of Chautauqua trail.