Fragmented race planning - minimalist journal-style planner

Fragmented race planning - minimalist journal-style planner targets a $300M = 2,000,000 serious endurance athletes x $150/yr ARPU. Targets runners/triathletes who pay prosumer coaching/planning tools and value race history. total addressable market with medium saturation and a year-over-year growth rate of 6-12% annual growth in endurance app monetization and prosumer subscriptions.

Key trends driving demand: Prosumerization of fitness -- more athletes pay small recurring fees for specialized tools rather than relying on free social apps.; Endurance sports growth -- rising participation in marathons, trail and ultra events increases helper-app demand.; Wearables and API maturity -- accessible training metrics and GPS data enable richer integrated journals.; Personal performance journaling -- athletes increasingly use notes and post-race narratives to refine plans and share findings..