If you want to hand your device to us directly after you finish the MCM/MCM50k we will have a person at this location (from 1000 until 1400 on race day):
https://www.google.com/maps/dir//38.893366,-77.071702/@38.8934136,-77.0718761,613m

Or
If you miss us you can mail your trackers to this address: PO Box 212, Newington VA 22122