
How the Sprint Triathlon Training Plan Evolves
Base Phase (4‑12 weeks)
Aerobic‑engine building: Z2 rides and swims, easy aerobic runs, plus technique drills.

Build Phase (3‑8 weeks)
Introduce brick intervals, tempo runs and threshold swims to develop race‑specific speed and pacing skill.

Recovery Weeks
Every 3‑4 weeks the AI inserts a down‑week—reduced volume and low‑intensity drills—to absorb training and eliminate lingering fatigue.

Taper (7‑14 days)
Sharpening sessions, open‑water familiarisation and mindset cues, leaving you fresh yet fast on the start‑line.

Dynamic length
Have only five weeks till race‑day? The AI compresses phases, prioritising the highest‑yield workouts. Starting ten months out? You’ll cycle through multiple Base‑Build blocks, each stepping volume and intensity progressively.

Phase | Typical Span* | Key Sessions | Goal |
Base | 4–12 wks | Endurance Z2 rides & swims; aerobic runs | Aerobic capacity |
Build | 3–8 wks | Brick intervals; tempo runs; VO2bikes; threshold swims | Race speed |
Recovery | 5–7 d | Low‑intensity; skills drills | Super‑compensation |
Taper | 7–14 d | Sharpening bricks; open‑water swims | Peak freshness |
Athletica adjusts these automatically based on your fitness and time‑to‑race.
Fully customizable—swap weeks, insert an extra recovery block, or extend the base phase whenever life (or fatigue) demands.

Inside Athletica’s AI Coach
1 | Real‑Time Feedback Loop
Corner‑stones:
- Nightly HRV scan – if HRV drops below baseline, Athletica’s AI-Coach warns you to back off on training and focus on recovery.

2 | Enhanced Session Feedback
After your workouts, an on‑the‑fly analysis explains why adjustments occurred and what to expect next.
- Session scanning – hit or exceed your target power? The AI-Coach is there to congratulate you and keep you moving forward.

3 | Workout Wizard
Need to move a session because the pool’s closed? Click on your Workout Wizard tab, and the AI immediately opens alternate sessions appropriate to keep you on track while maintaining stress balance.

Start Your Adaptive Week‑by‑Week Sprint Triathlon Training Plan
Unlock the full, interactive calendar by starting your free 14‑day trial. Sign up, connect your preferred device, and your personalised schedule lands in minutes.
Real‑World Results
Athletes like Katie Pintar, Cindy Maloney and literally 100s more cut substantial time off previous best performances after varying time on Athletica, despite juggling family and full‑time jobs.
That’s why thousands of Cal Tri athletes use Athletica as their preferred sprint triathlon training provider.
Essential Sprint Triathlon Gear Checklist
- Road or TT bike in safe working order
- Wetsuit or pool access (stretch‑cords as fallback)
- Running shoes suited to your gait
- GPS watch or bike power meter (Garmin, Wahoo, Apple Watch synced to Strava)
- Bike trainer or rollers for indoor quality sessions with our online training partner Velocity!
Frequently Asked Questions
How many weeks long is this sprint‑tri plan?
The plan is as long as you need—Athletica dynamically scales from 52 weeks out all the way down to a three‑week quick‑build.
Can I start if my race is only four weeks away?
Absolutely. The AI compresses phases, emphasising quality training and race‑specific pace, while trimming volume appropriately so you arrive fresh.
What happens if I miss a workout?
Not a problem. You have the option of either moving it to somewhere later in the week, deleting it, or just missing it. The coach automatically recalculates your stress balance and rebuilds the load across the week.
Do I need pool access?
Pool is ideal, but stretch‑cord and open‑water replacements exist.
How does Athletica use HRV?
Nightly HRV readings inform readiness; low HRV triggers a warning from your AI-coach, high HRV suggests positive adaptation to the training and good recovery.
Which devices sync?
Garmin, Wahoo, Concept 2 and various devices like Polar, Coros, Suunto and Apple Watch via Strava and Intervals.icu; manual file upload is possible too.
Is strength training included?
Yes—weekly S&C from the HYROX global library keeps you strong.
Can I export workouts to my bike computer?
Yes—one‑click auto-export to Garmin and Wahoo; enjoy group rides and personal live coaching on Velocity with us.
What distance is a sprint triathlon?
Standard sprint format is a 750 m swim, 20 km bike and 5 km run—your plan targets those proportions but adjusts session length to your fitness.
Does the plan include nutrition or fueling guidance?
Yes—our podcasts, blogs, and Athletica U education series provide deep dives into sprint‑tri nutrition.
More Resources to Level Up
- Beginner’s HRV guide
- Zone 2 training and where to start
- The science of VO2max training
- How to adapt to heat
- Our FREE Athletica Forum Community
- Training for healthspan and longevity with Athletica
Ready to Train the Smart Way?
Athletica is trusted by athletes featured in Triathlete, partnered with Cal Tri, and built on peer‑reviewed sports‑science.