26weeks.ai — Adaptive AI coach for endurance athletes

26weeks.ai helps endurance athletes plan, execute, and adjust training for events like marathon, half marathon, ironman, ironman 70.3, ultra marathon, hyrox — with conservative guardrails and clear daily decisions.

What is 26weeks.ai?

26weeks.ai is an adaptive AI coach app for endurance athletes training for events like marathons, half marathons, triathlon (including Ironman 70.3), ultras, and HYROX. Instead of a static PDF, it turns a race goal into a clear week‑by‑week build and a simple “what to do today,” then adjusts when real life interrupts the plan (missed sessions, travel, poor sleep, or unexpected fatigue). The core idea is to reduce decision fatigue: you get workouts, pacing/fueling tools, and practical guidance that can change without restarting your plan. 26weeks.ai is currently available on iOS via TestFlight. Training guidance is educational and coach‑like, but it’s not a substitute for medical care.

Who is 26weeks.ai for?

26weeks.ai is for endurance athletes who want structure without spreadsheet overwhelm: first‑time marathoners, returning runners rebuilding consistency, busy athletes balancing work/family, and anyone who prefers clear choices over endless plan variants. You set your goal event and constraints (time available, training days, long‑run preferences), then follow a progression designed to build fitness while keeping recovery in the conversation. 26weeks.ai is not built to diagnose injuries or manage medical conditions; if you have symptoms, a history of injury, or anything that worsens with training load, consult a qualified professional. Think of it as decision‑support for training basics: plan, execute, adjust, repeat.

How does the adaptive coach work?

The adaptive coach starts with a baseline plan, then updates guidance based on what actually happens. You set a goal (race type/date), current context (recent training, schedule constraints), and preferred structure (days per week, long‑run focus). Each day, you get a clear session suggestion, plus tools to make decisions faster (paces, splits, fueling totals, cutoff planning). After workouts, you can debrief how it felt; the coach uses those signals—along with consistency and constraints—to make conservative adjustments to upcoming sessions. “Adaptive” means the plan can change without starting over: shifting a hard workout, protecting recovery when fatigue is elevated, or simplifying the week when time disappears.

How much does it cost (and is there a free trial)?

26weeks.ai offers a 2‑week free trial so you can evaluate the coaching workflow with real training. After the trial, pricing is simple: $30/month or $150 for 6 months (USD). Paid plans are meant to remove “feature math”: you get the same core experience—adaptive coaching, plan adjustments, and access to the training library (guides/tools/race resources) that supports day‑to‑day decision‑making. The practical test is: will this reduce your daily decision friction while keeping training sensible? If yes, the subscription typically replaces scattered resources (PDF plans, calculators, and blog hopping) with one consistent system.

Is it safe? What we don’t do.

26weeks.ai is built around safety‑first defaults, but it is not medical advice and it does not replace a clinician or coach when you need one. The product does not diagnose injuries, interpret symptoms, or provide treatment guidance. It also does not provide doping protocols or unsafe biohacks. Training content is educational and focused on helping athletes make simpler, lower‑risk decisions: consistent progression, recovery awareness, and practical planning for pacing/fueling/race week. If you’re dealing with pain, illness, or symptoms that worsen with training load, pause and consult a qualified professional. Always verify race logistics with official organizers because details can change close to race day.

Key takeaways

• 26weeks.ai is an adaptive AI coach for endurance athletes (not a static PDF plan).
• It’s built to reduce decision fatigue: “what to do today” + tools for pacing/fueling/cutoffs.
• Plans can adjust when life happens, with conservative guardrails.
• 2‑week free trial, then $30/month or $150/6 months (USD).
• Not medical advice; no diagnosis/treatment; no doping; verify race logistics officially.