Hey, if you are driving off for a week stop by and pick me up! I keep a bag packed all the time for that very purpose! Honestly, I don't think it makes you or me an unfit mom for dreaming of running and if it does I suspect we are in good company.
My youngest are 7yo and whenever I get the itch to have another baby I think of what they were like at the age yours is now. It cures that desire for another right up. Yours is at a really tough age. Believe it or not it won't last long, maybe 3-6 months (maybe a little more but not forever) and he'll go through some other phase. Hang in there and it will work out. That same energetic, refusing-to-sleep characteristic he's showing you now will probably be a personality characteristic you'll admire later. Hugs to you until then.
" I object to violence because when it appears to do good, the good is only temporary; the evil it does is permanent." Mahatma Gandhi
"This is the ultimate weakness of violence: It multiplies evil and violence in the universe. It doesn't solve any problems." Martin Luther King, Jr.