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Utah’s Mighty Five loop or Utah Scenic Byway 12?

Utah’s Mighty Five loop or Utah Scenic Byway 12? Both routes compared: length, driving time, best season, tolls and road limits, with our recommendation.

Utah’s Mighty Five loopUtah Scenic Byway 12
RouteLas Vegas → Las VegasBryce Canyon National Park → Torrey
Suggested days83
Distance1,498 km (931 mi)169 km (105 mi)
Driving16 h 37 min1 h 53 min
Stops116
Best time to goApril–May and OctoberMay and October
Tolls and vignettesNone expectedNone expected
Good to knowSize limits for motorhomes: Zion–Mount Carmel Tunnel, Zion NP (UT) (height 11 ft 4 in (3.5 m)).–

Our recommendation

Choose the Mighty Five loop if you have eight days: about 1,498 km from Las Vegas through Zion, Bryce, Capitol Reef, Arches and Canyonlands, returning past Monument Valley. The Zion–Mount Carmel Tunnel has an 11 ft 4 in height limit for motorhomes, and Arches often needs timed-entry reservations in peak season. Pick Scenic Byway 12 if you have three days: about 169 km from Bryce Canyon over the narrow Hogback ridge and Boulder Mountain to Torrey and Capitol Reef. Both are hot in summer, so aim for spring or October, and fill up whenever you can.

How we work: data and estimates