Here's a Google Map with a few data errors:
View Larger Map
Here's an elevation graph:

A few photos from the trail:
A view of the antennas in the distance from the saddle near Inspiration Point.
Mike (with his new Blur LT) and Miles in front a rock-slide at the tunnel.
A view of the antennas from below.
An encouraging sign on the far side of the tunnel.
The ride was marred by a crash towards the end. Miles went over the bars in a rocky section near the bottom of the Merrill single-track and landed on his head. After the incident, we skipped the Sunset Peak single-track opting instead for the smoother Lower Merrill Trail. He went to Urgent Care the next day and got X-rays which luckily confirmed that nothing was broken. Gnarly.