What time did you run? I did the run with a couple people at 1100. It was a blast. Being a zombie rocked also. Some of the most buff guys have the highest pitch scream haha and do they ever get freaked out when they realize your chasing them!
I did the 9am wave. Some other friends ran in the 11am wave, they finished in 59 minutes, 1 guy 2 gals. If you were a zombie at the start I would be easy to recognize, I was at the end lol, red sweater, black jogging pants wearing glasses with orange arms.
I kept my last flag for the longest time as it was hanging behind me like a tail, so I just walked up to zombies with my arms out, they didn't notice, and I watched out of the corner of my eye so if they did notice and came after I booked it then, plan didn't work too well near the end where the trail got really narrow.