National Bicycle Greenway (NBG) NBG is envisioned as a nationwide network of interconnected bike friendly roads and bicycle pathways that will connect cyclists to major cities throughout the US. Website: nationalbicyclegreenway.comEmail: NBG@bikeroute.comPhone: 415 240-4712Mailing Address:PO Box 60355Palo Alto, CA 94306Date Updated: 6/26/2010