I managed to finish today's workout. The original goal was to run for 25 minutes, bike for 2 hours and run another 25 minutes. I ended up choosing the shorter version of the suggested workout and only biking for an hour and a half. So, I ran for 50 minutes and biked for an hour and a half.
2 servings Gatorade
1/2 Chocolate power bar
I lost about 5 lbs of sweat during the workout despite drinking and eating. I felt fine throughout it though right now, about 4 hours later my legs are a little tired and my feet are pretty sore. I will ice more later, drink water and see how I feel tomorrow.
So, tomorrow's workout is a long swim and there is a very difficult Tuesday and Thursday this week.