From Delta to Bryce Canyon? If that's what you mean, here's your best route:
Take US 50 eastbound to I-15.
Take I-15 southbound to SR 20, south of Beaver.
Take SR 20 eastbound to US 89, where you turn right.
Take US 89 southbound to SR 12 and make a left.
Take SR 12 eastbound to SR 63, where you make a right.
SR 63 southbound leads you into the park.
These were just the simplified directions; here's the link to the directions from Google Maps (
from: Delta, Utah to: Bryce Canyon, Utah - Google Maps)