Orion Ultra - 100M, 50M, 26.2, 13.1 AND 10K
The entire course is on a 10 mile section of beach that runs from Surfside to the San Luis Pass. It will be soft sand around the top of the beach and harder packed near the water.
Here is the course map/outlook: http://www.gmap-pedometer.com/?r=7094671
10k 3.1 mile out and back
Half Marathon 13.1 1 Loop 10 miles + 1.55 Out and Back
Full Marathon 26.2 1 Loop 20 miles + 3.1 Out and Back
50 milers 2 20 mile full loops + 5mile Out and Back
100 miler 5 full Loops