How far is Casa Grande, AZ from Somerton, AZ?
The driving distance from Casa Grande, AZ to Somerton, AZ is about 187.7 miles (302.1 km), with a travel time of about 03h 20m by car.
- The straight-line flight distance is about 172.7 miles (277.9 km).
- For a round trip, plan for roughly 06h 41m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM MST.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 03h 20m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Town in Maricopa County, Arizona, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Driving Route Map
The map below follows the saved road route between Casa Grande and Somerton.
Turn-by-Turn Driving Directions
Step-by-step road directions between Casa Grande and Somerton.
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1
Start on West Gila Bend Highway
10 m · 3 sec · West Gila Bend Highway
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2
Continue on West Florence Boulevard
1 mi · 2 min · West Florence Boulevard
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3
Turn right onto North Trekell Road
3.4 mi · 6 min · North Trekell Road
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4
Take the ramp right toward I 8 West: San Diego
1993 ft · 49 sec
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5
Merge slight left onto Phoenix Bypass Route
54.4 mi · 54 min · Phoenix Bypass Route
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6
Continue on Blue Star Memorial Highway
111.9 mi · 1 hr 54 min · Blue Star Memorial Highway
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7
Take the exit slight right toward AZ 195: Araby Road, San Luis
1661 ft · 41 sec
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8
Keep slight left to continue on AZ 195: Araby Road, San Luis
81 m · 8 sec
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9
Enter the roundabout and take exit 3 toward South Araby Road
82 m · 4 sec · South Araby Road
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10
Exit the roundabout onto South Araby Road
723 ft · 9 sec · South Araby Road
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11
Enter the roundabout and take exit 2 toward Robert A. Vaughan Expressway
57 m · 3 sec · South Araby Road
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12
Exit the rotary onto South Araby Road
2385 ft · 35 sec · South Araby Road
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13
Turn right onto East 32nd Street
5.8 mi · 9 min · East 32nd Street
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14
Turn left onto West 32nd Street
1.7 mi · 3 min · West 32nd Street
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15
Turn left onto South Avenue B
4 mi · 5 min · South Avenue B
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16
Continue on San Luis–Yuma–Quartzsite Highway
1.3 mi · 2 min · San Luis–Yuma–Quartzsite Highway
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17
Continue on West County 16th Street
1.2 km · 50 sec · West County 16th Street
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18
Continue on East Main Street
1.7 mi · 2 min · East Main Street
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19
Turn left onto South Musgrove Avenue
113 m · 18 sec · South Musgrove Avenue
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20
Turn right onto East Cano Street
112 m · 18 sec · East Cano Street
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21
Turn right onto South Somerton Avenue
93 m · 6 sec · South Somerton Avenue
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22
Arrive at your destination
0 m · 1 sec · South Somerton Avenue
Car Route Details
A richer read on the saved driving route between Casa Grande and Somerton.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Blue Star Memorial Highway
Continue on Blue Star Memorial Highway
112 mi · 01h 54m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Sunny leaving Casa Grande and Sunny near Somerton.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Casa Grande to Somerton?
The road trip is about 187.7 miles (302.1 km) and usually takes 03h 20m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Gila Bend is a useful midpoint, sitting about 93.7 miles from Casa Grande and 94 miles from Somerton.
How much longer is the road route than the straight-line distance?
The direct path is about 172.7 miles (277.9 km), while the road route adds roughly 15 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 6:00 AM to 8:00 AM MST. If you want a more comfortable same-day return, try to leave by 10:18 AM MST.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $32.78 one way or $65.55 round trip. Estimated CO2 is about 58.8 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Casa Grande and Sunny near Somerton.
Stop Ideas Near Gila Bend
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Gila Bend.
Maricopa
Phoenix (Greyhound), Arizona
Phoenix (Airport), Arizona
Phoenix (Metro Center Transit Station), Arizona
Flight Path Map
This map shows the direct air route between Casa Grande and Somerton. Straight-line distance: 172.69 mi (277.92 km).
#1 Casa Grande
The most populous city in Pinal County, Arizona.
| Population | 61,183 |
| Coordinates | 32.8795000, -111.7573500 |
| Altitude | 426 |
| Country | United States |
#2 Somerton
City in Arizona, United States
| Population | 16,716 |
| Coordinates | 32.5964400, -114.7096800 |
| Altitude | 32 |
| Country | United States |
End: Somerton (-114.70968, 32.59644)
Estimated Travel Time
Distance: 302 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 15m |
| 40 mph (64.37 km/h) | 04h 41m |
| 50 mph (80.47 km/h) | 03h 45m |
| 60 mph (96.56 km/h) | 03h 07m |
| 70 mph (112.65 km/h) | 02h 40m |
| 80 mph (129 km/h) | 02h 20m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.95 | $32.78 | $65.55 |
| Mid-grade | $5.34 | $35.34 | $70.68 |
| Premium | $5.57 | $36.85 | $73.69 |
| Diesel | $6.37 | $42.14 | $84.29 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Arizona · May 31, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.