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Drive Time
5h 34m
Distance
332.1 mi
535 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$53
one way
EV Charging
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station data
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Roy, UT
Wikimedia Commons
Saint George, UT
Wikimedia Commons
Embarking from Roy, Utah, to Saint George, Utah, this 332.1-mile journey takes approximately 5 hours and 34 minutes. It's a manageable one-day trip, perfect for a single push without needing an overnight stop. You'll primarily navigate Veterans Memorial Highway and Trailblazer Boulevard, with a short segment on I 15 BUS. Expect a fuel cost around $53 for this drive. The route offers a turn-heavy local driving experience, making it feel more connected to the communities you pass through as you travel across the Mountain West region of Utah.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
166.1 miles from Roy, UT
A natural place for your longest stop of the day , about 2h 46m into the drive .
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This route is characterized as a "turn-heavy local drive," suggesting it's not a high-speed interstate cruise. With 0% highway share, you'll be spending your entire 5 hours and 34 minutes on local roads. The longest uninterrupted stretch you'll encounter is 329.4 miles on Veterans Memorial Highway, indicating a long, continuous segment on this primary road before any significant changes. Be prepared for frequent turns and a more engaging driving experience as you navigate through various towns and landscapes.
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. You will hit about 8 points where you need to pay attention to lane position or signs. The trickiest moment comes around 0.4 miles in near I 15 / Veterans Memorial Highway.
Moderate - straightforward overall, but long enough or busy enough to require pacing
This drive requires moderate attention. Across 332.1 miles you will encounter 8 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: at 0.4 miles (I 15 / Veterans Memorial Highway): Merge point - match speed before joining. Lane positioning matters here; at 25.1 miles (I 15 / Veterans Memorial Highway): Highway fork - watch signs carefully. Lane positioning matters here; at 33.3 miles (I 15 / Veterans Memorial Highway): Highway fork - watch signs carefully. Lane positioning matters here.
These are the spots where you need to pay the most attention. Preview them before you drive.
Merge onto I 15 / Veterans Memorial Highway
Merge point - match speed before joining. Lane positioning matters here
Keep slight left at fork onto I 15 / Veterans Memorial Highway
Highway fork - watch signs carefully. Lane positioning matters here
Keep slight left at fork onto I 15 / Veterans Memorial Highway
Highway fork - watch signs carefully. Lane positioning matters here
Take the exit onto I 15 BUS toward SR 34: Saint George Boulevard
Exit ramp - move to the correct lane early. Lane positioning matters here
Turn left onto University Avenue
Lane positioning matters here
| Road | Distance | Duration |
|---|---|---|
| Veterans Memorial Highway | 329.4 mi | 5h 27m |
| Trailblazer Boulevard | 0.9 mi | 2m |
| I 15 BUS | 0.8 mi | 2m |
| University Avenue | 0.5 mi | 1m |
| 5600 South | <0.1 mi | <1m |
| 100 West | <0.1 mi | <1m |
Step-by-step road directions between Roy, UT and Saint George, UT.
Start on SR 97
Take the ramp
Merge onto I 15
Keep slight left at fork onto I 15
Keep slight left at fork onto I 15
Take the exit onto I 15 BUS
Turn left onto University Avenue
Turn right onto Trailblazer Boulevard
Turn right onto 100 West
Turn right
Arrive at destination
Given this is a one-day trip of about 5.5 hours, leaving early in the morning from Roy, UT, will give you ample daylight for the drive. With only one recommended stop, you can plan your break strategically along the 329.4-mile stretch of Veterans Memorial Highway. Keep an eye on your fuel levels, as the estimated cost is $53. The turn-heavy nature of this local drive means staying alert and mindful of speed limits through different communities. Enjoy the flexibility of a single-day adventure across Utah's Mountain West region.
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 80 miles or 1h 22m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 166.1 miles or 2h 46m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 4h 31m
Traffic, exits, and arrival timing usually matter more near Saint George, UT than in the middle of the route.
Open the route before leaving Roy, UT so your first major turns are already loaded.
Leave with enough water and a charging cable within reach, not packed away.
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
Day 1
Settle into the route from Roy, UT
This is one driving day of about 332.1 miles and 5h 34m.
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 166.1 mi from Roy, UT · 2h 46m into the drive
Mid-route town
Meal stop
166 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
A short stop after about 80 miles helps settle the day before fatigue starts building.
The midpoint is around 166.1 miles from Roy, UT, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before Veterans Memorial Highway if your tank is already low. That segment runs about 329.4 miles.
The final approach into Saint George, UT usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.
Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Saint George, UT.
After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Regular Gas
$52.63 one way
$105.25 round trip
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.22 | $55.16 | $110.33 |
| premium | $4.53 | $59.24 | $118.48 |
| diesel | $5.61 | $73.32 | $146.65 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$53
Meals
$25–$50
Total
$78–$103
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 116.2 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $35 in charging · 1 stop · 66% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 99.6 | 1 | $34.87 | $15.94 |
| Efficient EV | 83 | 0 | $29.06 | $13.28 |
| EV Truck/SUV | 132.8 | 1 | $46.49 | $21.25 |
Gas CO2
116 kg
EV CO2
39 kg (66% less)
Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Current conditions at both ends of the drive.
Origin
Night in Roy on Tuesday
Local time
10:49 PM
MDT
Current temp
58°F
Sunny
Destination
Night in Saint George on Tuesday
Local time
10:49 PM
MDT
Current temp
79°F
Unavailable
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
Time zone
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
An early start around 7-8 AM gets you there with plenty of daylight left.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
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