The total elevation difference for South Sand Point Trail is 189 feet which is a lower than average number. This trek shouldn't take more than 3.5 hours, but you never know stuff could go wrong and you could get stuck so be prepared for that. South Sand Point Trail is not that long but it's always fine to bring some emergency supplies, you never know what could happen. There is only one trailhead, so you're looking at an in and out backcountry hike. With its 3.8 miles of walking distance it's shorter than many backcountry hiking trails. There's not much difference in elevation along South Sand Point Trail, so you get pretty much the same conditions along the whole backcountry hiking trail.