I did the ATC ride this morning for the first time - what a superb group road ride. The ride starts from the ATC store on Barton Springs road, heads out Southwest parkway and then connects to the 'Dam Loop' - then back down 360 to the MOPAC access road and Barton Springs. Total distance is about 50 miles. The also have a 30 mile option that turns around at 71/620 intersection I beleive.
They have groups that run all paces - I think the lead A group finished at around a 22 mph average, which is a little mis-leadng because the first 10 miles of the ride was a slow warmup. There were groups running down to the 14-16mph range as well.
The turnout was phenominal - probably 100+ riders. At the end of the ride, ATC had breakfast tacos and drinks for everyone - sweet!
Highly recommended ride - great loop, great support.
It's Saturdays starting @ 8:30 am.