TrainingPeaks Acquires TrainerDay: Indoor Training Integration Deepens

TrainingPeaks has acquired TrainerDay, the popular browser-based indoor trainer platform. The acquisition closes Q1 2026 and adds TrainerDay's library of 50,000+ structured workouts to TrainingPeaks' catalog.

What it meansTrainerDay has been a free browser-based alternative to Zwift for indoor training. The platform supports ERG mode with most smart trainers and offers a large library of workouts (including a public workout builder). The integration with TrainingPeaks brings structured training plans and the new AI Coach feature into TrainerDay.

What's nextTrainingPeaks plans to keep TrainerDay free, with the structured workouts and training plan integration available to TrainingPeaks subscribers. The integrated platform launches in Q3 2026.

Why it mattersThe acquisition puts pressure on Zwift's market position. Zwift's $14.99/month subscription includes structured workouts, virtual worlds, and social features. TrainerDay's free tier (with TrainingPeaks subscription) covers structured workouts but lacks the virtual world. For many cyclists, this is a reasonable substitute.

Acquisition priceNot disclosed. Industry estimates suggest $20-30M, given TrainerDay's 50,000+ active users and TrainingPeaks' strategic interest in indoor training.