Distance from Ajax, South Dakota to Seneca, South Dakota
The driving distance from Ajax, South Dakota to Seneca, South Dakota is 267.8 mi (430.9 km)
The straight-line (air) distance is approximately 123 mi (198 km)
Estimated travel time by road is 4 hours 14 minutes
This route includes Toll roads along the way.
We found 3 routes between Ajax and Seneca.
Available Routes
Route Directions
Get on SD-79 S/US-16 BYP in Rapid City
Take I-90 E to 161st Ave/Adams Ave in East Central Pennington. Exit from I-90 E
Follow New Underwood Rd, SD-34 E and SD-73 N to US-212 E/W 1st St in Faith
Follow US-212 E to Pine St in Seneca
Route Directions
Get on I-90 E in Box Elder from SD-79 N and US-16 BYP
Follow I-90 E to SD-248 in East Lyman. Take exit 248 from I-90 E
Follow SD-47 N to Pine St in Seneca
Route Directions
Get on SD-79 S/US-16 BYP in Rapid City
Take I-90 E, US-14 E, US-83 N and US-212 E to Pine St in Seneca
Journey Details
Traveling from Ajax, South Dakota to Seneca, South Dakota covers 263.7 miles (424 km) in a east direction. This fast highway, long-distance route typically takes 4 hours 6 minutes under normal conditions.
Drivers have 3 route options between these locations (264-295 miles / 424-475 km). The primary route shown here saves 13 minutes compared to alternatives.
The route features scenic views, toll sections. During midday weekday travel, expect lighter midday traffic with average speeds around 67 mph (108 km/h) .
Journey Waypoints
Ajax
Starting Point
Seneca
Destination