https://www.summitpost.org/thompson-peak/153013

Giff Walters submitted this route description:

Thompson Peak (10,751') is the highest summit in the Sawtooth Range. There are four routes to the top of Thompson Peak with the easiest being class 3 (the South Couloir route). It is an extremely aesthetic climb with amazing views from the summit. From the Redfish trailhead it is ~6 miles to the summit with a gain of ~ 4200 ft.

The Brisbane Valley Rail Trail officially starts at Wulkuraka Station in Ipswich and then continues to Fernvale, before looping westwards to Lowood and then continuing north to Coominya, Esk and Toogoolawah. The section from Toogoolawah to Moore is currently under construction, but in the meantime there is an alternative scenic route by minor country roads. From Moore the trail continues northwards to Linville before turning west to Benarkin, Blackbutt and finally Yarraman. 

Dan Kraft submitted the route:

Dan Kraft submitted the North Ridge Ascent route.  Note that there are several other trails on Marys Peak (our map below shows a Loop utilizing the North Ridge and the East Ridge).