OverviewThe standard route to Sandy Peak follows the crest of the Last Chance Range from the saddle where the Eureka Valley Road crosses the range. It's a pleasant ridge ramble. There are probably routes that you can take directly from Eureka Valley, but I don't know of any established routes that have been reported. Coming from the valley would probably be a tough affair, involving much more gain and rough terrain.
Getting ThereFrom Big Pine, CA, take highway 168 east 2.4 miles to the Death Valley Road (Forest Service Road 9S18, also known as the Waucoba-Saline Valley Road) and turn southeast (right). Follow this paved (at first) road and well-graded dirt (from Eureka Valley onward) road as it crosses the Inyo Crest and drops into Eureka Valley before climbing again up into the Last Chance Range. Keep following the the road to the crest of the Last Chance range to a very broad open saddle and park (4900 ft.). If you start heading back downhill a ways and end up at Crankshaft Junction, you've gone too far. Backtrack from Crankshaft Junction 3 miles back to the saddle. I found the topo helpful when locating the saddle and where to park.
You can also reach the area from northern Death Valley en route to Crankshaft Junction. Once at the junction turn left and head uphill to the saddle.