In 424 B.C. they were attacked by Sitalces, king of the Odrysae, who was defeated and lost his life in the engagement.
The most powerful Thracian tribe was that of the Odrysae, whose king, Teres, .in the middle of the 5th century B.C. extended his dominion so as to include the greater part of Thrace.
During the 5th century, they appear as furnishing a contingent of cavalry to Sitalces, king of the Odrysae, in his attack on Perdiccas II., king of Macedon, but the decay of the Odrysian kingdom again left them independent.
Of Macedon in 342 reduced the Odrysae to the condition of tributaries, the Getae, fearing that their turn would come next, made overtures to the conqueror.