This was my first off-road marathon. It was beautiful. I got hurt - my foot landed in a hole. I think I will stick with road marathons.

Put the aid stations at least 20 yds past the mileage markers. Put a trash can at the aid station and one 50 yds past. Started on time and the weather was perfect. Thanks for having every mile marked. More spectator areas would be nice. Advertise more. Post results sooner. Good Job. Nice volunteers.

Well organized, good aid stations every 2 miles. No spectators except the volunteers. Course was changed this year so that the starting point is also the 21 mile mark, and it's flat/down/flat to the finish. Only 2 hills -- mile 14 and 21, both 150-200 feet. Large gravel for several miles was hard to run on, but packed dirt and asphalt made up 75% of the course. If you like solo running, this is a good one. A good small marathon with lots of heart.

The marathon was a local event, so the participation was well below the advertised maximum. I've run the mega events, e.g. LA, Rock n' Roll, etc., and thoroughly enjoyed this marathon. Water stops were spaced 2 miles apart, so you might be well advised to carry some of your own. Volunteers were great! Course wasn't as challenging as I thought it would be. The inclines were very slight, except for a few, and the dirt paths were actually utility roads. My only complaint is about the little rocks that made their way into my shoes (constantly).

Could have had an extra water stop at the end. Put milage markers every mile. Good job for first time out.

The Diamond Valley Lake Challenge was a lot of fun. The course was scenic, hilly, and challenging. It circumnavigates Diamond Valley Lake and the surface is mostly graded dirt roads with numerous hills. The aid stations where widely spaced, every 2 miles, with very helpful and support personnel. The stations only provided water & Gatorade, except one that had candy.
Unfortuately, it was a hot day, at 88', the start is a short hilly loop that spirals around on it's self (1.5 miles) back to the start and there's one appendage at mile 15 where you run down then up the same hill (3 miles) (arrgggh!). Overall, it was a fun race, the support personnel and participants were extremely friendly. Security was extremely visible and tight. I'll probably do it again if the weather is cool.