TrainX FitRunning & triathlon plans

A training plan
for your race,
week by week

Set your race date, level and how many days you can train. TX Coach builds the plan around them — on the method of a working endurance coach.

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TX Coach plans
21.1Half marathon
42.2Marathon
70.3Half-distance tri
140.6Full-distance tri

Ready-made plans also cover 5K, 10K and learning to swim.

Training volume, hours per week

16 weeks
BaseBuildPeakTaper

Volume builds to the peak and drops in the taper, so you start the race fresh.

Threshold run

Today
Run · 66 min
Heart rate
162–170
bpm
Pace
4:35–4:45
min/km
Warm-up
15 min
Easy run, build gradually
Heart rate 130–145Pace 5:40–6:10
4×20 s
Strides, walk back to recover
Main set
3×
10 min
Steady at threshold
Heart rate 162–170Pace 4:35–4:45
3 min
Easy jog
Cool-down
10 min
Easy jog, then stretch
Heart rate < 140

How it works

01

Pick a plan

Choose a ready-made plan for your level, or let TX Coach build one for your race date.

Plan catalog with triathlon and running plans: weeks, sessions and hours per week
02

Fit it into your week

Pick the days you can train and when to start. You see the finish date up front.

Plan setup: training days, start date and finish date
03

Set your zones

Do a field test or enter thresholds you know — every session gets your pace and heart rate. No data yet? Train by feel on a 1–10 scale.

Intensity zones: five pace zones from the anaerobic threshold

Beyond the plan

Race day plan

Pace for each segment, a finish-time estimate and when to eat and drink on course.

Field tests

Retest during the plan — zones update and upcoming sessions follow.

Tools

Pace calculator, heart rate zones and a workout library with technique notes.

Vladislav Afonin, triathlon and swimming coach

Vladislav Afonin

Triathlon and swimming coach, and the developer of TrainX Fit. The plans follow the same rules he uses with his own athletes.

  • Phases tied to your dateBase, build, peak and taper, with down weeks to absorb the load.
  • Your intensity, not an averagePace and heart rate come from your own tests.
  • Volume you can actually doBuilt around the days you have, not an ideal week.

Get TrainX Fit

Questions go straight to the coach in our Telegram.

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