Tammy training ride #4. We drove to Rosati's parking lot and began our ride from there. We rode down Mercury to Hartmann to Olde Salem Park, then continued along the Hanover Park-Schaumburg Trail. We rode the full span several times, circled Ranger Park about 7 times, and including visits to Atcher Park and Jane Addams school before returning to the car. Temperatures were perfect in the 70s with light winds and low humidity. Tammy drove home while I rode home via Mercury to Grove to [path] to Springinsguth to Fenz to [Schaumburg Metra Station] to Ryan to Travis to Gary (sidewalk) to Central to Bartels to Arlington to [path] to Indigo to Cloverdale . . . to Home. With my Trek at the bike shop for repairs, I rode my mountain bike and used Tammy's cycle computer and Google Earth to determine mileage. I estimated my ride time.