The middle weekday run is usually longer than the other two. For my first marathon I used this as my speedwork run - doing either some type of interval training or a tempo run.
However, my schedule has changed a bit since last summer. I now lead an Israeli Dance group on Tuesday nights - I am up on my feet and moving from 7pm until 10pm and I normally don't get home until close to 11pm. This leaves me pretty exhausted and the last thing I want to do is wake up early on Wednesday morning for a longer and more intense run. Also, when I would run on Tuesday morning - even an easy run - I would be tired before I even started dancing that evening. By mid-week I would feel run down...which could be why I was getting sick so often.
This week I'm going to try something different - I'll do my middle weekday run at lunchtime on Wednesday. I'm hoping that by not running early in the morning that I will get enough rest and I'll have the energy to do this workout mid-day. I no longer have a standing 12 noon conference call on Wednesdays, so my work calendar is mostly clear.
Two things concern me a bit - weather and eating schedule. Although the weather has not been bad for July, I know that we will have some really hot and humid days here in the DC area. I guess I could always move my workout inside onto the treadmill - I just hate running on the treadmill when the sun is shining. As for eating, I'll need to figure out what and when to eat on Wednesdays so that I will have enough energy to do the workout, but I won't get stomach cramps.
So, tomorrow's lunchtime workout will be a 5-miler. I'm not sure if I'll do a tempo run or head to the track. We'll see...