here is the route from Evanston, exit 3, we get gas at the Flying J, to the airport. Same run through SLC on I-80 is 87.5 miles
Summary: 96.6 miles (1 hour, 30 minutes) your time may vary
Mile Instruction For Toward
0.5 Take Ramp (LEFT) onto I-80 [US-189] 32.8 mi I-80 / US-189
4.0 Entering Utah
33.3 At exit 168, take Ramp (RIGHT) onto I-84 31.0 mi I-84 / Ogden
65.4 At exit 87B, turn RIGHT onto Ramp 0.2 mi US-89 / Salt Lake
65.5 Bear RIGHT (South) onto US-89 1.9 mi
67.5 At 343, stay on US-89 (South) 8.6 mi
76.1 At exit 327, take Ramp (LEFT) onto I-15 [US-89] 10.9 mi I-15 / Salt Lake
87.0 At exit 316, take Ramp (RIGHT) onto I-215 5.8 mi I-215 / Belt Route / S.L. International Airport
92.8 At exit 22A, turn off onto Ramp 0.9 mi I-80 / Airport / Reno
93.7 Take Ramp (LEFT) onto I-80 2.7 mi I-80 / Reno
96.0 At exit 114, turn RIGHT onto Ramp 0.2 mi Wright Bros. Drive
96.2 Road name changes to Wright Brothers Dr 0.1 mi
96.3 merge left keep left
96.4 Take Ramp onto I-80 0.7 mi I-80 / Salt Lake
As you see on the map, you just run north instead of south...