Let me guess, you're hiking Woodson?
That's good for a local trail, it's got some steep sections.
Both times I did Whitney, I hiked San Gorgonio a week before. The South Fork Trail is like 20-21 miles round trip and a similar elevation gain, so it's a good replica of the main trail (though 3000 feet lower in elevation). It also helps with the acclimatizing process.
