After missing the running group on Saturday because I forgot to turn on my alarm, I decided to go out and do my first long run in my marathon training plan. I did 17-down the Mt. Vernon Trail, over the 14th St. Bridge, along the river to Rock Creek, then up Rock Creek to Tilden, over to the trails, down the trails and back to my place in Courthouse. I ran 2:15 for the 17 miles.
I averaged 7:30 for the first 9 miles but slowed down to 8:30 pace for the final 8 miles. Now some of the slowdown was due to some big hills in and coming out of Rock Creek, but I did lose energy during the second half of my run.
Should I be using goo or some sort of energy supplement on these runs? I'm thinking that it would have helped me after about 90 minutes into the run. When is the best time to take a goo packet? An hour in? 90 minutes in?