I've been riding below the range from Mooloolah to Nambour, great varied riding with 300mtr+ climbing in an hour and 25km loop most directions.Hi Bluemut, are you training up around the Dulong/Mapelton/Monteville range area. When I was young I used to ride/train in that area. I often would ride up Dulong range fixed wheel (on the old steelie, above). I did not have gears then and it had 27" wheels. The bike is actually lighter with gears (as shown) then it was back then with fixed gearing (what's now called single speed or fixie). Just lighter wheels and much lighter pedals
Also , now that the Obi Obi road is bitumen you could train out to Kenilworth. Fantastic views up on the range ... have fun
Yet to make it up the range on the roadie, but have climbed it on the AM Mtb on unsealed roads.