Distance between cities › USA › Wyoming › Shell, WY › Distance from Shell to Spencer Book Hotels

Distance from Shell, WY to Spencer, ID

Distance

338 mi

Time

7 hours 40 mins

Gas Cost

$32 - $61

There are 217.68 miles from Shell to Spencer in west direction and 338 miles (543.96 kilometers) by car, following the US-20 route.

Shell and Spencer are 7 hours 40 mins far apart, if you drive non-stop .

This is the fastest route from Shell, WY to Spencer, ID.

Shell, WY and Spencer, ID are in the same time zone (MDT). Current time in both locations is 12:50 pm.

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Lowest Price Rental Cars in Shell, WY

Planning on renting a car to go from Shell, WY to Spencer, ID? Here there are some offers to rent a car in Shell, WY

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Shell »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 13.59 gallons of gas to cover the route between Shell, WY and Spencer, ID.

The estimated cost of gas to go from Shell to Spencer is $44.33.

During the route, an average car will release 266.25 pounds of CO₂ to the atmosphere. The carbon footprint would be 0.79 pounds of CO₂ per mile.

Average USA gas price used for calculation is $3.26 per gallon of regular gas. Price last updated on March 12, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Shell, WY and Spencer, ID

If you want to meet halfway between Shell, WY and Spencer, ID or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 44.711908 and -110.50476, or 44º 42' 42.8688" N, 110º 30' 17.136" W. This location is 169.19 miles away from Shell, WY and Spencer, ID and it would take approximately 3 hours 50 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Yellowstone National Park, WY, situated 165 miles from Shell, WY and 187 miles from Spencer, ID. It would take 3 hours 53 mins to go from Shell to Yellowstone National Park and 4 hours 7 mins to go from Spencer to Yellowstone National Park.