The full 20+ mile Mrazek
trail gives a spectacular Oregon high country ride. The 100% singletrack ride exposes you to just about every variety of Central Oregon mountain biking terrain.
The typical start from Tumalo Falls Trailhead is a steep but gorgeous grind uphill that is well rewarded with countless miles of downhill. Don't be fooled though, it's a good aerobic push even when it's trending downhill.
Most riders do this as a shuttle, dropping a car at Shevlin Park TH, and starting the true ride at the Tumalo Falls TH. Heroic effort if you do this as an out and back, some might say that's just crazy.
The first hour up the North Fork
trail is definitely an uphill grind, but the distractions of the countless waterfalls keep you smiling. You'll view Tumalo Falls, and so many other waterfalls, that it does actually become the norm. After the hill climbs, you reach Happy Valley, appropriately named. Take a right over the bridge to gain access to Mrazek
Once on Mrazek
proper, it is a long gradual descent through the Tumalo Creek drainage.