Watch for cars and dirt bikes! They use the road, too!
2N10 starts at the top of Fern Trail and runs parallel to Skyline Trail, which meets up and crosses over the road in many places. This is great for bypassing certain technical sections of Skyline Trail if you're a beginner.
2N10 basically runs up behind the Snow Summit Ski Area (or bike park) and down to where it turns into Mill Creek Road. There are mostly ups and downs along the whole road.