bMount Russell is a separate trip which uses detours from the Mount Whitney trail at Upper Boyscout Lake, approximately 3 miles from Whitney Portal. It is one mile north of Mount Whitney and more technical. The summit is a knife ridge which would scare even the more adventurous.
If Mount Whitney is not enough of a challenge for you, there is the possibility of a toofer by scrambling up to the summit of neighboring peak Mount Muir. The slightly shorter summit is more exposed and technical and requires scrambling- hand over foot climbing over rocks. Its not recommended for the novice or the faint of heart. It is also not advised to do this peak unless you have the proper skills, equipment and route finding ability.