When exiting the Trans-Canada Highway at the east access, the route starts several kilometers south of Robinsons and ends at the Trans-Canada Highway several kilometres south of Jeffrey's.

It enters Jeffrey's, where it makes a sharp right at an intersection with a local road leading to St. David's and Maidstone.

The highway now follows the coastline as it heads northeast through McKay's.

Route 404 crosses the Barachois River to pass through Cartyville before crossing the Robinsons River into Robinsons.

It passes through town, where it makes a sharp right at an intersection with a local road leading to Heatherton, before heading eastward through inland terrain for several kilometres to come to an end at another intersection with Route 1.