Saskatchewan Highway 303

Hwy 303 begins in the Rural Municipality of Wilton No. 472 at an intersection with the Yellowhead Highway (Hwy 16) on the eastern outskirts of Lloydminster, curving due eastward to run along the Rural Municipality of Britannia No. 502 boundary for several kilometres, where it has an intersection with Hwy 688 / Range Road 3265 near Big Gully Municipal Park, before crossing Big Gully Creek, and curving back south into Wilton No. 472. Running parallel to the north bank of the creek, the highway shares a short concurrency (overlap) with Hwy 675 and enters the Rural Municipality of Eldon No. 471, having a junction with Hwy 684 before becoming concurrent with northbound Hwy 21 at the locality of McLaren, just north of Silver Lake Regional Park. The pair head north through Milleton to cross the Toby Nollet Bridge over the North Saskatchewan River into the Rural Municipality of Frenchman Butte No. 501.

Upon crossing the river, Hwy 303 splits off and heads east to pass a Carlton Trail historical marker and cross the Englishman River just south of Englishman Lake before having an intersection with Range Road 3221, which leads south to Westhazel, and entering the Rural Municipality of Mervin No. 499. The highway travels through rural farmland for a few kilometres to cross the Turtlelake River and enter the town of Turtleford, running along 1st Street S on the southern edge of downtown to cross the remains of a former railway and come to an end at an intersection with Hwy 26, just across the street from the Ernie the Turtle statue. The entire length of Hwy 303 is a paved, two-lane highway.^[3]