Southern Ports Highway South Australia
North end South end
Coordinates	36°49′33″S 139°51′41″E / 36.825775°S 139.861427°E / -36.825775; 139.861427 (North end) 37°35′33″S 140°21′02″E / 37.592366°S 140.350487°E / -37.592366; 140.350487 (South end)
General information
Type	Highway
Length	118 km (73 mi)[1]
Route number(s)	B101 (1999–present)
Former route number	Alt National Route 1 (1978–1999)
Major junctions
North end	Princes Highway Kingston SE, South Australia
South end	Princes Highway Millicent, South Australia
Location(s)
Region	Limestone Coast[2]
Major settlements	Mount Benson, Robe, Beachport, Rendelsham
Highway system
Highways in Australia National Highway • Freeways in Australia Highways in South Australia

Southern Ports Highway is a 119 kilometres (74 miles) rural highway in South Australia that connects Kingston SE with Millicent via Rendelsham, Southend, Beachport and Robe.^[3] It is a former alignment of Princes Highway, bypassed in 1933.

LGA[4]	Location[1][3]	km[1]	mi	Destinations	Notes
Kingston	Kingston SE	0.0	0.0	Princes Highway (B1) – Meningie, Adelaide	Northern terminus of highway and route B101
Robe	Robe	41.2	25.6	Main Road – Robe
	Bray	56.8	35.3	Clay Wells Road – Penola
Wattle Range	Beachport	86.9	54.0	Millicent-Beachport Road – Beachport
	Millicent	118	73	Princes Highway (B1) – Tantanoola, Mount Gambier Mount Burr Road – Penola	Southern terminus of highway and route B101
Route transition

Australian roads portal

• Highways in Australia
• List of highways in South Australia

• Southern Ports Highway webpage on Ozroads website