0 Start at Red Canyon bikepath at Red canyon CG entrance, go west.  Red canyon bikepath is untimed, all together, no drop riding. 
1.2 Thunder Mtn TH:  go south on singletrack on thunder mtn/grandview trail.  Start your timer.  
2.7 Thunder mtn/Grandview split.  Go S on Grandview trail.
This section of the Grandview is rideable for a few miles, then gradually gets more and more diffucult.  Expect lots of hike a bike in the next 8 miles.
11 Hard left down wash crossing (still Grandview). 
11.2 Piped spring, had water in June. 
12.5 Turn left (uphill, S) on dirt road.  Proctor canyon, still Grandview.
16.5 Go straight (E) at intersection down FS 109/Paunsaugunt Tr towards Tropic res.
21.5 Turn left/N on to Chimney Rock trail
22.9 Arrive King Creek campground.  Look for water spigot to your left.  Head right/E/downhill through CG. Reliable water
23.3 Turn left/N on main road on W side of Tropic res.
23.8 Turn left/N on Fremont ATV trail.  Heads up for motos!
34.2 Turn left/SW on maintained gravel road 
35.5 Begin Thunder Mountain trail.  Begin intense pleasure.
41.6 Bear right/downhill/N at the Grandview/Thunder Mtn intersection
43 Thunder Mtn trailhead in Red Canyon.  End timed section.  Turn right/E on bikepath to return to the campground.