Trainers must travel northeast up the side of the route to get around rocky ledges, then turn west to bike over small rocks that block the way. After clearing the rocks the Trainer must move southward once more down a rocky ledge onto a small ledge. From there the path moves westward along the rocky edge toward a small grass patch that turns north where the Trainer comes to a house. East of the house is a staircase up the mountain side. A bike must be used to cross planks that go across the small valley. Trainers may travel into the valley using Rock Climb, where they will come across two small ponds of water and some tall grass.
Along this route, there is a house where players can visit to heal their Pokémon. It is located in the southern end of the route, just before ascending the first mountainous area. As the player navigates the route, volcanic ash falls from the mountain. The first time the player comes here, they will run into Crasher Wake and their rival, who will talk about Stark Mountain, as well as a mention of the Battleground in Pokémon Platinum.
At the other side of the valley Trainers must traverse north through a large patch of tall grass to weave around the rocky ledges. From there Trainers must drop down a few ledges then make a u-turn heading back north-ward through some more tall grass to reach a staircase that leads to the summit of Stark Mountain.
Route 227 appeared in The Magma Stone, where it was shown to be a rocky road with many trees and a river. After calming down Heatran at Stark Mountain, Looker and Buck went there and Buck refreshed himself at the river. When Buck told Looker that he would be ready to save him if he ever got into trouble, Looker assured him that he would never lose to a young man like him, prompting Buck to request a battle with him.