Not too familiar with South Lake as I always stay up on the North side. Anyway, for running: the Tahoe Rim Trail goes around the entire lake and the parts I’ve run on the North side have been awesome. Google ‘Tahoe Rim Trail’ for maps etc., but here is some info on the trail segements between main trailheads…
TAHOE CITY - BROCKWAY
TRAIL CONDITIONS
The Tahoe City to Brockway segment of the Tahoe Rim runs 19 miles from Tahoe City (elevation 6,300’) to Brockway Summit (7,200’).
BROCKWAY SUMMIT TO TAHOE MEADOWS
**TRAIL CONDITIONS **
The Brockway to Tahoe Meadows segment of the Tahoe Rim runs 18 miles from Brockway Summit (7,200’), to just beneath Martis Peak (8,660’), to Mount Rose Highway.
Tahoe Meadows to Spooner Summit
**TRAIL CONDITIONS **
Between Tahoe Meadows (8,560’)and and Spooner Summit (7,150’), 21 miles of trail snake around the lofty granite peaks of the Carson Range.
**SPOONER SUMMIT SOUTH - KINGSBURY NORTH **
TRAIL CONDITIONS
The trail between Spooner Summit South (7,150’) and Kingsbury North (7,920’) runs for 12 generally moderate miles across the rocky spine and pine-clad slopes of the Carson Range.
KINGSBURY SOUTH BIG MEADOW
TRAIL CONDITIONS
The Kingsbury South, Heavenly Stagecoach Heavenly Stage(7,520’)to Big Meadow (7,200’) leg of the Tahoe Rim Trail runs for 22.5 miles across the forested slopes of the Carson Range.
BIG MEADOW - ECHO LAKE
TRAIL CONDITIONS
Sixteen miles of Tahoe Rim Trail connect the Big Meadow (7,200’ elevation) and Echo Summit (7,400’) trailheads.
ECHO LAKES-BARKER PASS
TRAIL CONDITIONS
Between Echo Lake (7,420’) and Barker Pass (7,640’), 32 miles of moderate to difficult trail leads through the granite heart of the Desolation Wilderness.
BARKER PASS-TAHOE CITY
TRAIL CONDITIONS
The first five miles of moderate to gentle trail run north from Barker Pass(7,640’) to Twin Peaks (8,880’) where the TRT branches from the Pacific Crest Trail near Twin Peaks and continues 8 miles down through Paige Meadows and on to Tahoe City