Idaho State Highway 36 travels 73.2 miles from Interstate 15, north of Malad City to Weston, Preston and U.S. 89 at Ovid. The route overlaps with SH 34 from Preston northeast to Riverdale.
| SH 34 north and SH 36 east overlap from U.S. 91 in Preston. The two separate in 5.6 miles with SH 34 continuing north to Grace and Soda Springs and SH 36 traveling east to Montpelier. 03/01/10 |
| SH 36 west combines with SH 34 south 5.6 miles to U.S. 91 at the city of Preston. 03/01/10 |
| SH 34 south concludes at the turn of SH 36 westbound onto U.S. 91 in Preston. SH 36 overlaps with U.S. 91 (State Street) south 0.9 miles to Oneida Street, where it resumes a westward course to Dayton and Malad City. 03/01/10 |