Looks like the Lone Star Randonneurs are hosting your pick of rides, Saturday, June 11.  Starting at the Lynn Creek Marina parking lot is a 63 mile ride to Maypearl and back, and a 100 mile ride to Maypearl, Italy, and Waxahatchie and back.  There are some hills on both, and a couple of wood bridges, but some nice scenery.  I expect a 07:00 start time.  I'll probably do the 100, unless I ride my trike, in which case the 63 will be ample for me.  Anyone interested let me know.  No fee or membership required.
 
Doug, last year dhansen rode the 100 in his velo.

The century route was my first ever LSR ride, had a blast.  Was the only bent in the group because square corners rode an upright with the group.
 
I need to ponder this a bit.

Stephen has confirmed the rides start at 07:00, at the parking lot for the Lynn Creek Marina and Oasis Restaurant.  Get there ahead of time to sign up and get ready.  Neither the 162km or the 100km ride requires membership.  It should be sunny and fairly warm, so bring water and electrolytes, and some cash for replenishments at the controls.