I hear you. Most of my riding is in the pines so I know the deal I have actually ridden the BTB and just south of there in them Pygmy Pines all around Spring Hill and Bear Swamp Hill. Recently I was injured for a while. All is good now though I put in a quick 8 miler this morning at local trail by me in Lacey. It has its fair share of sand and steep climbs. Damn how quick we get out of shape at 50. Still a great ride though. I will stick to this trail for a while and some other easy local ones until I get my wind and legs back. Then I will definitely start hitting some more challenging spots like Spring Hill to train on sand and the Wharton loop for distance.