Zion–Mt. Carmel Highway

Springdale to Mt Carmel Junction

Southwestern Utah · Utah · United States

Key measurements

Distance

25.5 miles

Elevation gain

5,673 ft

Elevation loss

4,377 ft

High point

6,119 ft

Low point

3,882 ft

Net change

1,290 ft (3,907 ft to 5,197 ft)

Surface

Paved

Route type

point-to-point

Route Overview

This 25.5-mile point-to-point route follows UT-9 from Springdale through Zion National Park and the historic Zion–Mt. Carmel Highway before continuing to Mount Carmel Junction. Despite its short distance, the ride involves over 5,600 feet of cumulative elevation gain as it climbs out of the Virgin River basin, scales the monumental red sandstone cliffs of Zion National Park, passes through a historic 1.1-mile tunnel, and traverses the high slickrock plateau before dropping into the East Fork drainage.

The progression transitions dramatically from deep, narrow canyon geometry dominated by sheer Navajo Sandstone walls to an open, pale-rock high country etched with cross-bedded sandstone formations and pinyon-juniper woodland.

Key Segments & Geographic Transitions

Zion-Mount Carmel Highway (UT-9) — Miles 0.0–25.5

Starting in Springdale near the park boundary (elevation 3,882 ft), UT-9 enters Zion National Park and crosses the floor of Zion Canyon alongside the Virgin River. Near mile 4.0, the route turns east and begins climbing the Pine Creek switchbacks—a tight, stacked series of hairpins carved directly into the red canyon wall, gaining elevation rapidly against vertical cliffs.

At mile 7.0, the road enters the Zion-Mount Carmel Tunnel, a 1.1-mile unlit bore completed in 1930 that cuts straight through the solid rock, punctuated by large gallery windows cut into the cliff face. Emerging from the tunnel at mile 8.1, the landscape transforms immediately into the pale, cream-and-orange slickrock plateau. The road flows through rolling curves and exposed sandstone domes, reaching the route's high point of 6,119 feet near mile 16.9. Passing the East Entrance station shortly after, UT-9 descends along Clear Creek through a winding, high-desert corridor to terminate at State Route 89 near Mt Carmel (elevation 5,180 ft).

Seasonal & Environmental Context

Spring and autumn offer the most favorable riding weather, with clear skies and moderate temperatures, though high park visitation creates dense traffic during these periods.

Summer brings extreme heat to the lower canyon near Springdale, where temperatures frequently exceed 100°F. Summer afternoons also bring North American Monsoon storms, which can cause sudden flash flooding, severe runoff, and debris accumulation across the roadway. High elevations above 5,000 feet experience winter freezing and snow; while the road is regularly plowed, shaded stretches along the switchbacks and tunnel portals retain black ice long after storms pass.

Logistics & Services

Because this route passes entirely through Zion National Park, a park entrance fee or valid pass is required at both the South Entrance (Springdale) and East Entrance gates.

Full services, fuel, and supplies are available at both ends of the route in Springdale and Mt Carmel Junction. There are no gas stations or commercial services within the national park boundaries along UT-9.

Large vehicles are subject to strict size and weight restrictions on the Zion–Mt. Carmel Highway between Canyon Junction and the East Entrance. Vehicles exceeding posted limits are not permitted on this section and must use alternate routes. Traffic control and construction-related delays may still occur, so riders should check current National Park Service road conditions before traveling.

Important Considerations

Traffic density within Zion National Park is exceptionally high during peak season, leading to slow-moving sightseeing traffic, shuttles, and sudden stops by drivers watching wildlife or scenery. * The 1.1-mile Zion-Mount Carmel Tunnel is narrow and completely unlit inside; entering it requires adapting to sudden dark conditions after bright desert sunlight, and the road surface inside can be damp from groundwater seepage. * Fine sand, loose gravel, and spalled rock frequently collect in the tight apexes of the Pine Creek switchbacks, particularly after rain events or winter freeze-thaw cycles.