Alderfer/Three Sisters Park

The current estimate for Alderfer/Three Sisters Park is PRIME: rideable now. No significant rain in the forecast. 0.4″ of rain, 2d ago.

Loam currently estimates dry conditions (PRIME). About 55% of the ground here is rock, so it drains faster than its soil type alone suggests. 0.4″ of rain, 2d ago.

Alderfer/Three Sisters Park sits on rocky sandy soil that drains fast. About 55% of this ground is rock fragments, so water runs through it faster than the soil type alone suggests. It dries quicker than plain sandy. The soil type here is classified, but the exact drying speed is modeled from that classification rather than measured directly at this spot.

Alderfer/Three Sisters Park drains quicker than its soil type suggests, since about 55% of the ground is rock fragments. Its terrain drains at a moderate pace.

The rocky soil here drains quickly, but softer sections may need more time. Wait until the surface is firm. Check the current estimate before heading out, and turn back if your tires leave ruts.

Yes. At 7,832 ft, Alderfer/Three Sisters Park typically sees winter snow and freeze-thaw that can pause riding. Loam flags a FROZEN state when the ground is snow-covered or frozen, then clears it as things thaw and dry.

Trails at Alderfer/Three Sisters Park include Mountain Muhly Trail, Dedisse, Ponderosa Trail, Sisters Trail and Bearberry Trail. This is a partial list. The condition estimate covers the whole network, so individual trails may differ.

Alderfer/Three Sisters Park sits at roughly 7,832 feet, faces mostly ESE, and averages a 3.7° grade with about 41% tree cover. It is exposed to morning sun, and the gentle terrain leaves low spots soft after storms.

Snow can limit riding at Alderfer/Three Sisters Park in winter, at around 7,832 feet. Spring snowmelt and fall freezes can also affect conditions. Check the current conditions before planning a ride.