If you feel like going on a longer ride a good warm up would be the lsd path, then open it up after near north and branch out onto some medium traffic roads on sheridan rd. or green bay north through kennilworth, onto wilmette, take the bike path through the botanical gardens to lake cook rd, I think? Head a few blocks west a pick up the path again. Through Highland Park/ Lake Bluff/ Lake Forest/ (all very bike friendly towns) all the way up to the navy base in Waukegan/North Chicago. Round trip is between 60-70 miles. The north suburbs of chicago is where the real nice riding is. Mapmyride would give full details.