[Carl n Susan]

The HWY 9 route through the tunnel is 104 miles, I assume you are over 13' 1" tall and/or exceed 50' in combined length otherwise you can traverse the tunnel for $15 (and a small delay).

There are three other routes from Zion to Bryce.

I-15 – Hwy-20 – Hwy-89 is 139 miles. These are all good roads

I-15 – Hwy-14 – Hwy-89 is only 89 miles. As I recall. this is the route we took.

Kolob Road – Hwy14 – Hwy89 is 104 on really local roads. We drove much of Kolob Road with just the truck. Very scenic, but not the route I would take with the RV (too slow for sure).