Isaar Trail Riders support many of the trails around Seymour. Isaar is located about 10 miles to the northeast of Seymour. The county is divided into four zones, which are opened and closed depending on the snowfall we have received. To find out if a current segment is open, see below, I will try to update the trail conditions frequently. You may also call the Parks Dept. at 1-(920)-832-4790.