My third favor place to walk in Baton Rouge, Louisiana is the Baton Rouge Zoo.  In the mornings, during the summer months, it was not overly crowded.  You could keep up a good pace.  You may have to deal with the animals staring at you.  Also, keep a eye out for the 5 to 6 foot tall hooded homo sapiens wielding a garden hose.  They can be spotted in the early morning hours in many of the enclosures.    Another plus to walking in the zoo, is you get see monkeys and tigers showing off their lounging skills, and giraffes and rhinoceros demonstrating their eating skills while you are exercising.