Run In Mud Obstacle Race Training-2/14/17

Today I had planned to run much more than 4 miles. The plan called for two laps up and down the mountain for a total of 7.5 miles and 1120 feet of elevation. However, halfway through the run I just felt drained. I couldn't regain energy or motivation and stopped early with 4.3 miles and 600 feet of elevation. 

I'm convinced that as I've stepped up CrossFit training, I'm loosing endurance for my runs. I guess there is trade off. However, I am hoping that the challenge will result in better race performance. 

Run 4.3 miles

Do pull ups on various hand holds.