Levy Loop

I walked the Levy Loop this morning in 31:16. My legs felt pretty lively, but the weather forecast for Saturday prevents from monkeying with my Ouachita Trail 50K over-under. They say the high will be 86°F. Considering that I have finished one 50K in three attempts, and the weather, I'll have to set my odds of finishing at 2-1. I'm unsure what to recommend. I do plan to start very slowly, which will give me a chance, but, man, I can imagine getting to Pinnacle on the way back and not wanting to face that final 4.2 miles, or quitting at Bob Turd's. We'll see. I am obviously undertrained.