Jordan River trail is famous for goatheads . I use tire liners and no more goathead flats.I stay away from SLC part of the trail. Legacy trail is smoother ,straighter and safer.The Saltair ride , airport to Great Salt Lake Marina is pankake flat about 30 miles out and back. Very low traffic and great for personal time trails A lot of it has been resurfaced the last few years. The new prison and the proposed Inland Port might ruin it in the future though.Good luck.