Climbing Oval Peak can be difficult due to the amount of talus on its slopes. There is a summit register at the peak.[4]
Climate
Lying east of the Cascade crest, the area around Oval Peak is a bit drier than areas to the west. Summers can bring warm temperatures and occasional thunderstorms. With its impressive height, Oval Peak can have snow on it in late-Spring and early-Fall, and can be very cold in the winter.[3] The best time to climb Oval Peak is early July through October.[5] Precipitation runoff from the mountain drains into Oval Creek and Buttermilk Creek, which are both tributaries of the Twisp River.
During the Pleistocene period dating back over two million years ago, glaciation advancing and retreating repeatedly scoured the landscape leaving deposits of rock debris.[6] The U-shaped cross section of the river valleys is a result of recent glaciation. Uplift and faulting in combination with glaciation have been the dominant processes which have created the tall peaks and deep valleys of the North Cascades area.