🗺️CityToCityDistance

Boise to Salt Lake City Distance

341 miles•548 km•5.1 hours

Driving distance and route information from Boise, United Statesto Salt Lake City, United States. Compare multiple routes and get detailed travel information.

⭐

FASTEST ROUTE

340.26 mi
(547.6 km)
⏱️5h 6m
Via US-20 → US-26 → I-84 → I-15
US-20 → US-26
🔄

ALTERNATIVE ROUTE

423.33 mi
(681.28 km)
⏱️6h 30m
Via US-20 → US-26 → I-84 → US-93
US-20 → US-26
📏 Straight-line distance: 296 miles (477 km)
See crow flies distance →
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Complete Driving Guide: Boise to Salt Lake City

Essential Route Information

TOTAL DISTANCE
341 mi
548 kilometers
DRIVING TIME
5.1 hours
306 minutes
FUEL ESTIMATE
46 L
$69 cost

📍 Route Overview

Starting PointBoise, Idaho
DestinationSalt Lake City, Utah
Route Options2 available routes
Countries Crossed1 country
Time Zone ChangesCheck local times

🚗 Driving Details

Average Speed107 km/h
Straight-line Distance477 km
Route Efficiency87%
Toll RoadsNo tolls expected
Ferry CrossingsNo ferries

Compare All Routes from Boise to Salt Lake City

Route TypeDistanceDrive TimeAvg SpeedTolls
⭐ Fastest Route340 mi (548 km)5.1 hours107 km/h❌ No
Alternative 1423 mi (681 km)6.5 hours105 km/h❌ No

Complete Journey Overview: Boise to Salt Lake City

The road journey from Boise to Salt Lake City spans approximately 341 miles (548 kilometers), making it a long-distance drive that typically requires 5.1 hours of continuous driving under normal traffic conditions.

This route connects Idaho, United States with Utah, United States, traversing through various regions within United States. The journey offers 2 distinct routing options, each with unique advantages in terms of distance, time, or scenic value.

The fastest driving route from Boise to Salt Lake City follows the US-20 → US-26 → I-84 → I-15 corridor, maintaining an average speed of approximately 107 km/h. This corridor avoids toll roads, keeping out-of-pocket cost limited to fuel and incidentals.

🗺️ Travel Planning Essentials

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Fuel Planning: Expect to use approximately 14 gallons (46 liters) of fuel for this 341 mile journey. Plan fuel stops every 250-300 miles.
✓
Rest Stops: For safety, plan a 15-minute break every 2 hours of driving. Total journey with breaks: 5.9 hours.
✓
Best Travel Times: Avoid peak traffic hours (7-9 AM and 5-7 PM) in major cities along your route for optimal travel time.
✓
Weather Check: Monitor weather conditions along the entire route, especially during winter months or rainy seasons.

💰 Cost Estimation Guide

Fuel Cost (approximate)$48
Toll Costs$0
Vehicle Wear & Tear (total, ~$0.25/mi)$85
Total Trip Cost$133

* Costs are estimates based on average fuel prices and vehicle maintenance. Actual costs may vary.

Alternative Transportation Options

🚗

By Car

5.1 hours

341 miles

✈️

By Plane

0.6 hours flight

477 km direct

🚌

By Bus

6.6 hours

Multiple stops

More routes from Salt Lake City

View all distances from Salt Lake City →

Boise to Salt Lake City - Frequently Asked Questions

What is the driving distance from Boise to Salt Lake City?
The driving distance from Boise to Salt Lake City is 341 miles (548 km) by the fastest route, which follows US-20 → US-26 → I-84 → I-15. The straight-line ("as the crow flies") distance is 477 km — driving distances are typically 20-40% longer than straight-line because roads must navigate around terrain and built environment.
How long does it take to drive from Boise to Salt Lake City?
The drive from Boise to Salt Lake City takes approximately 5h 6m of continuous driving at an average speed of 107 km/h. With a 15-minute rest stop every two hours, plan on roughly 5.9 hours of total trip time. Add additional time for traffic, weather, or border crossings.
What is the fastest route from Boise to Salt Lake City?
The fastest driving route from Boise to Salt Lake City is 341 miles (548 km) via US-20 → US-26 → I-84 → I-15, taking about 5h 6m. This corridor follows the major highway connection between the two cities and is optimized for travel time.
Are there alternative routes from Boise to Salt Lake City?
Yes, 2 routing options exist between Boise and Salt Lake City. Alternatives have similar total distance but use different road segments — useful if the primary corridor has heavy traffic or construction.
Does the route from Boise to Salt Lake City include tolls?
No, the fastest driving route from Boise to Salt Lake City stays on toll-free public roads. Alternative routes may use different segments — check each route's summary above.
How much fuel does it take to drive from Boise to Salt Lake City?
A standard car at 30 mpg uses approximately 11 gallons (46 liters) of fuel for the 341-mile (548-km) drive from Boise to Salt Lake City. At $3.50 per gallon that is roughly $39 in fuel cost; less efficient vehicles or higher local fuel prices will increase this proportionally.
How do I navigate from Boise to Salt Lake City?
Use the "Open this route in your nav app" buttons above the journey guide to launch turn-by-turn directions in Google Maps, Apple Maps, or Waze. Each link pre-fills Boise as the origin and Salt Lake City as the destination, so navigation begins as soon as the app opens.