The Go! St. Louis Half Marathon is a great way to see the city of St. Louis. The race starts under the Gateway Arch, winds into East St. Louis, over two bridges, through all the districts and finishes where it began.
The Run Bentonville Half Marathon is a fun run that loops out and around the town. The last 4 miles of the course wandered through a system of trails that provided a bit more eye candy than a simple road race.
The Encinitas Half Marathon is an amazing race. In fairness, it is my hometown so I'm also a tad biased. Its a gorgeous course run along the ocean, its close to home and this was the FIRST time I ran with my son Gage.