Snow.  For the most part snow has been avoiding the Duluth area all winter.  So right now 30 miles south of Duluth snow conditions are great- 30 miles north of Duluth snow conditions are great- The trails around Duluth have some bare spots and ice but they are rideable- I would call them fair to good depending on what direction they are running as south facing trails are taking a beating from the sun.  If you are North or south outside of the no new snow band I would call the trails good to excellent.  That being said the clubs around Duluth are out there moving snow trying to cover the thin areas for the weekend.  With the forecast ahead this could be the last weekend of good riding.