I stopped being lazy and googled it... this is what I found:
Current Drop-Off Locations to Recycle Athletic Shoe
For individuals interested in recycling small quantities of worn-out athletic shoes, please visit Nike's website to find a drop-off location near you. If there is not a collection partner in your area, you can mail shoes at your own expense back to:
Nike Recycling Center
c/o Reuse-A-Shoe
26755 SW 95th Ave.
Wilsonville, OR 97070
from this site
http://www.nrc-recycle.org/reuseashoe.aspx