Trailhead is at Piney Lake. Get off at Exit 176 on I 70 - go west and turn on Redsandstone Rd, which turns into Piney Lake Road. Most of it is dirt road and it can be a bumpy ride, but makeable for a normal sedan - just take it slow.Park outside the reserve gate to your right
Hike from Piney Like along Piney River Trail to the Upper Piney Valley until you are below the notch separating Peak F and Peak G.
Leave the trail and bushwhack in direction of the notch. A very long rubble field gulley is leading straight up to the notch and offers the easiest approach to Peak F from Piney River Valley. The talus is extremely lose, getting up to the notch (and back again) is a pretty tedious/frustrating affair as anything and everything is moving underneath your feet.
Right below the notch turn to your left. A short Class 3 climb will get you to the summit of Peak F.
Sturdy boots, helmet and walking poles - in spring crampons and ice axe