The larger trails in the lake county area are little manistee 45ish miles outer loop with a trail that cuts it in half
there is also lincoln hills 22ish miles also has a junction trail with little manistee this is my trail of choice when i ride my quad
then there is tin cup i have not been there in 15 years or so because last time we went the whole trail with the exception of the area the size of a football field that was flooded was whoops about 3 foot deep
Not sure about little o but i do know that part of little o & big o are miccc trail which only allows vehicles with a max width of 48 inches to ride
Just my 2¢!!!!!