dress up like a clown. No one will come near you.
Hmm, I'd say a high powered light w/ strobe and a small frame pistol and a Beretta Jetfire (.25 cal). It holds 8 rounds in the mag and 1 in the chamber..
cel phone, reflective vest, a good wide road in a safe area, running partner, pepper spray, common sense (which i'm sure you have). Leave the guns at home.