Hi, folks.  My wife is running the White Rock Marathon this weekend, so I thought I might go over there either tomorrow (Thursday) or the next day and ride around the place, because I've never been there.  I'll be looking for places to wait for her to pass by, and to figure out parking.  I think I'll combine that with a bike ride.  I'll be driving over from the Southlake/Grapevine area.  I plan to take 635 around to somewhere not too far from White Rock Lake.
 
Looking at Virtual Earth, it looks like I could take the Hillcrest exit from 635, and go south on Park Central.  Just after I get onto Park Central, it looks like there is a small parking lot on the right, which borders a bike path.  If I take that path southbound, it looks like I would follow along near Park Central, cross Forest Lane, go under 75, along Royal, under Skillman, under Loop 12, on Lawther, then into the trail around the Lake.
 
For those of you familiar with all of this, does it sound like a good ride?  Is it safe (from muggers and/or traffic)?  Is the trail open all the way?  Or should I just drive all the way to the lake, and make a couple of loops there and then drive back home?  If I do the whole ride out and back, any idea how far that would be?  I'm looking to do about 20 to 30 miles, nothing farther because my wife will be with me and she wants to save her legs for the race.
 
Thanks for any recommendations!

I think you are talking about Anderson Bonner Park.
I rode that route this morning.  It is 7 miles to the lake - ten miles around the lake.
Good riding.
JohnS

By the way -- there is construction/destruction on the west side of the lake for the last two miles.  The left lane of Lawther is now "northbound only" car traffic, and the right lane is two-way split for non-drivers.  So be careful!!!
 
Also -- once you cross UNDER Mockingbird southbound -- about 100 yards later, there is a paved path that heads east, into the trees past the parking lot.  THIS is the path you take to reach the footbridge that takes you over to the east side of the lake.  This was their answer to traffic on Mockingbird...
 
My map is drawn that way, such that you are circing the lake "clockwise"...

Wow, is it that soon?  I ran it last year - it doesn't seem like it was that long ago....

Over on the Bikeforums Texas section, somebody says that the trail is closed north of 635 due to construction.  Is that true?  If so, I'll just go down Park Central to the first parking lot I see, and start riding from there.

Thanks, Paul.  Just got home from the ride and we really enjoyed it.  
 
There is a sign up at the parking lot off of Hillcrest that says, "Closed to Bicycles," or something like that.  Everybody just ignores it and rides anyway.  The trail is open, but I guess they just haven't taken down the sign yet.
 
That ride is pretty fun!  Thanks for all the advice everybody.  If it hadn't been for Rbent, I would probably never have heard of it.