Checkpoint. Cloudy and gray skies, cold - low to mid 30's with wind chill in the mid to low 20's (bike computer showed 27 to 30 degrees the whole ride), strong 14-15 mph SW winds, which were hell on the open prairies sections. But I stayed warm - added a neck gator, base glove layer with split finger gloves, short sleeve base layer with cool weather long sleeve jersey under the Bontrager wind jacket. Despite being warm most of the ride, I finally got cold hands and feet the last 10 miles. The McHenry County Glacial Park Conservation Area was gorgeous - first time exploring it. Tons of trails, woodland, grass and gravel roads. This might be well suited for mountain bikes. Look forward to exploring during better and warmer weather. Also a great take off point from Hart Road going both North and South on the McHenry County Prairie Trail and linking up to the Hebron Trail and Moraine Hills State Park. On the return from Hebron I took the Prairie Trail North just under a 1/2 mile to the Wisconsin state line in Genoa City, so I've completed the combo Fox River Trail from Oswego to Crystal Lake / McHenry County Prairie Trail from Crystal Lake to Genoa City.