the only hike of any reasonable length, without major elevation changes is up the Carmel River from the dam to Hiding Camp or Round Rock camp..
You could hike in 5-6 miles to carmel River camp, and day hike to round rock on day two and then return on day three, all with less than a 1000 ft of elevation gain.
Dont leave your car at the trailhead unles its not worth much to you...
