Who this is for
If you're a self-coached age-group triathlete trying to figure out whether TrainingPeaks, Athletica, or Triforge is worth your money, this is a straightforward breakdown. No fluff, no upselling. Each tool has genuine strengths and genuine weaknesses.
Quick comparison
| TrainingPeaks | Athletica | Triforge recommended | |
|---|---|---|---|
| AI guidance | ✗ | ✓ | ✓ |
| Explains reasoning | ✗ | ✗ | ✓ |
| Strava sync | Partial | Partial | Native |
| Coach ecosystem | Industry standard | Limited | Not built for coaches |
| Best for | Coach-athlete pairs | Full automation | Self-coached athletes |
| Price | $134.99/yr | $189/yr | $144/yr (~$12/mo) |
TrainingPeaks
TrainingPeaks is the industry standard for a reason. If you work with a coach, there's a good chance they require it — the coach-athlete workflow, structured workout builder, and TSS/CTL/ATL analytics are genuinely best-in-class. The data depth is unmatched.
The honest weakness: it's a toolkit, not a coach. If you're self-coached, you're staring at numbers without anything helping you interpret them. The learning curve is steep and the UI hasn't aged especially well. In 2026, paying $135/year for analytics without any AI layer feels like a gap.
Choose TrainingPeaks if: You have a coach who requires it, or you're an experienced athlete who knows exactly how to use TSS-based planning.
Athletica
Athletica is genuinely impressive if you want to hand training decisions to an algorithm. The adaptive AI adjusts your plan daily based on load, recovery, and performance, and it works. Athletes who've used it report training that feels appropriately calibrated without any manual input.
The honest weakness: it's a black box. You can't ask why a particular session is on your plan and get a meaningful answer. For athletes who want to understand their training, not just execute it, that's a fundamental limitation. It also assumes you want to shift your primary workflow away from Strava.
Choose Athletica if: You want full automation and you're comfortable trusting an algorithm without needing to understand its reasoning.
Triforge
Triforge sits in a different position, built specifically for self-coached age-group triathletes who want guidance they can actually understand. The AI analyses your training data and explains what it's seeing in plain language, citing the physiological reasoning behind each recommendation.
The Strava integration is native rather than bolted on — your activity history syncs automatically and feeds directly into the analysis. There's no duplicate workflow.
The honest weakness: it's not the right tool if you work with a human coach (TrainingPeaks owns that workflow), and it doesn't offer the fully automated plan generation that Athletica does. You're getting an intelligent training partner, not a hands-off autopilot.
Choose Triforge if: You're self-coached, already on Strava, and you want to understand the why behind your training rather than just follow instructions.
Bottom line
These three tools solve three different problems. TrainingPeaks is built for the coach-athlete relationship. Athletica is built for athletes who want automation. Triforge is built for athletes who want to coach themselves intelligently.
The question isn't which one is best, it's which problem you actually have.