The Road of Bones (The Ashen: Book One) by Demi Winters

From  Random House Publishing Group

In this epic and immersive Viking-inspired romantic fantasy, a woman fleeing a ruthless assassin accidentally joins forces with a group of mercenaries and must use all her cunning to escape with her life--and heart--intact.

The Queen of Íseldur has sent warriors to bring Silla to Sunnavík, where death awaits her. When her father is killed, his last words set Silla on a perilous quest: Travel the treacherous Road of Bones--a thousand-mile stretch haunted by warbands, creatures of darkness, and a mysterious murderer--and go to Kopa and the safety of a shield-house.

After barely surviving the first stretch of road, a desperate Silla sneaks into a supply wagon belonging to the notorious Bloodaxe Crew. To make it to Kopa, she must win over Axe Eyes, the brooding leader of the Crew, while avoiding the Wolf, his distractingly handsome right-hand man. All the while, the queen's ruthless assassin hunts Silla obsessively.

Will Silla make it safely to Kopa? Or will she fall prey to the perils of the Road of Bones?