12-week HYROX® training plan
By the Tuffr team · Last updated · 9 min read
A 12-week fitness race plan has four phases: base in weeks 1 to 4, build in weeks 5 to 8, peak in weeks 9 and 10, and taper in weeks 11 and 12. Train four times a week with one deload each month, and practise compromised runs, station circuits and a race simulation before the taper.
How is a 12-week fitness race plan structured?
The plan moves from general fitness to race-specific work and then to rest. Each phase has one job, and the hard sessions get closer to the race format as the weeks pass. All the structure below is our recommendation, based on common coaching practice for endurance events, and not a published standard.
| Weeks | Phase | Goal | Emphasis |
|---|---|---|---|
| 1 to 4 | Base | Build an easy running habit and learn the stations | Easy running, light station technique, strength |
| 5 to 8 | Build | Add race-specific work and volume | Compromised runs, station circuits, longer sessions |
| 9 to 10 | Peak | Practise the race at near race effort | Race simulations, goal-pace running |
| 11 to 12 | Taper | Arrive fresh and sharp | Less volume, short quality, rest |
The four phases of the plan
Weeks 4 and 8 are deload weeks, when you cut volume to absorb the training before the next block starts.
What does a training week look like with 4 sessions?
A four-session week has an easy run, a station and strength session, a quality run, and a long mixed session. Put them on non-consecutive days where you can, so the two hard sessions, C and D, are separated by an easier day.
| Session | Content | Effort |
|---|---|---|
| A: Easy run | 30 to 45 minutes at a conversational pace | Easy |
| B: Stations and strength | 45 to 60 minutes: 2 to 3 stations for technique, then squats, hinges, rows and carries | Moderate |
| C: Quality run | Intervals in the base phase, compromised runs from week 5 | Hard |
| D: Long mixed session | A long run, then run-and-station combinations; simulations in the peak phase | Moderate to hard |
The 4-session week (our recommendation)
Keep at least one full rest day, and do not stack sessions C and D on the same day or on consecutive days.
What if I can only train 3 times a week, or can do 5?
Three sessions work if you protect the key ones. Five sessions work if the extra session is easy. The sessions that matter most are C and D, with B close behind.
- 3 sessions: do B, C and D. Run easily for 10 to 15 minutes before B and after D when you can, to keep some easy volume.
- 4 sessions: the full week of A, B, C and D, as in the table above.
- 5 sessions: add an easy bike, swim or row of 30 to 45 minutes. Make it easy so it supports the other sessions and does not compete with them.
Note
More sessions are not better by default. If you feel flat or sore for several days in a row, drop the extra session first, not the key ones.What are compromised runs, station circuits and race simulations?
These three session types prepare you for what makes the race hard: running on tired legs and moving from one kind of effort to another. Each one builds on the one before it.
- Compromised run: alternate a 1 km run with one station and repeat. Start with 3 or 4 rounds at a light station load, and run at a steady effort you could hold for the whole race.
- Station circuit: do 4 to 8 stations in race order with 1 to 2 minutes of easy movement between them. Use lighter loads than race weight and focus on technique and a steady pace.
- Race simulation: a half or a near-full race with runs and stations at about 70 to 85 percent of race effort and loads. Do the biggest one 14 to 18 days before the race, and not in the final 10 days.
Important
Stop a session if you feel sharp pain, dizziness or unusual breathlessness. If an injury persists, see a doctor or a physiotherapist before you carry on.What does each week of the 12-week plan include?
The table lists the two sessions that change the most, C and D. A and B stay close to the table above, and you can use them to fit in technique work or strength. Paces are by effort: easy means you could hold a conversation. To set goal pace, use the race split calculator or published split targets by goal (see Sources).
| Week | Phase | C: Quality run | D: Long mixed session |
|---|---|---|---|
| 1 | Base | 6 x 400 m brisk, 90 s walk or jog between | 45 min easy run |
| 2 | Base | 5 x 3 min brisk, 2 min easy between | 50 min easy run, then 3 stations at light load |
| 3 | Base | 3 x 8 min steady, 2 min easy between | 55 min easy run, then 4 stations at light load |
| 4 | Base (deload) | 20 min steady run | 40 min easy run |
| 5 | Build | Compromised run: 4 x (1 km + 1 station, light load) | 60 min run with 4 stations spread through it |
| 6 | Build | Compromised run: 5 x (1 km + 1 station, light load) | Half simulation: 4 runs and 4 stations, easy effort |
| 7 | Build | Compromised run: 6 x (1 km + 1 station, moderate load) | 75 min mixed session: runs and 5 stations |
| 8 | Build (deload) | 3 x 1 km at goal pace, full rest between | 45 min easy run |
| 9 | Peak | Compromised run: 6 x (1 km + 1 station) at goal effort | Simulation of 6 runs and 6 stations at about 70 percent effort |
| 10 | Peak | 3 x 2 km at goal pace | Near-full simulation at about 80 percent effort |
| 11 | Taper | 4 x 1 km at goal pace with easy jogging between | 40 min easy run with a few short pickups |
| 12 | Taper and race | 20 min easy run with 4 short strides | Race day |
Key sessions by week (4-session plan, our recommendation)
How do I progress, and when should I deload?
Add load slowly and one thing at a time. These rules are our recommendation and a conservative reading of common practice, not a guarantee against injury.
- Raise weekly training time by no more than about 10 percent from one build week to the next.
- Change one variable at a time: more volume, more load or more speed, but not all three in one week.
- Deload in weeks 4 and 8 by cutting volume by about a third and keeping the sessions easy to moderate.
- Keep the easy runs truly easy. They carry the base that every other session depends on.
- If you miss a week through illness or travel, repeat the week before it and do not try to catch up.
Note
The WHO recommends at least 150 minutes of moderate aerobic activity a week for adults. Your plan should sit well above that only if your body is ready for it.How should I taper in the last two weeks?
A taper means less volume with some sharpness kept. In week 11, cut volume to about 70 percent of your peak week, and in week 12 to about half. This is our recommendation and it works best if you have built up consistently.
- Keep a few short pieces at goal pace so your legs stay sharp.
- Stop heavy leg strength work after week 10 and keep the loads light.
- Do not test a new station technique, shoe or fuelling plan in the last two weeks.
- Sleep, eat well and plan your race-day logistics early.
How do I adapt the plan for 8 or 6 weeks?
Shorter plans keep the same order of phases with fewer weeks in each. They suit athletes who are already running three times a week and training with weights. If you are not, choose the 12-week version, or more.
| Length | Phases | When it fits |
|---|---|---|
| 12 weeks | Base 1 to 4, build 5 to 8, peak 9 to 10, taper 11 to 12 | Most first-timers who already run and lift |
| 8 weeks | Base 1 to 2, build 3 to 4, peak 5 to 6, taper 7 to 8 | Athletes with a solid base who run regularly |
| 6 weeks | Base 1, build 2 to 3, peak 4 to 5, taper in week 6 | Experienced athletes, or a second race after a recent one |
Shorter versions of the plan (our recommendation)
For 8 weeks, take weeks 1, 3, 5 and 7 of the table above for the base and build phases, then use weeks 9, 10, 11 and 12 as written. For 6 weeks, use weeks 3, 6, 7, 9, 10 and 12 of the table above. In both versions, make sure the longest simulation still falls about two weeks before the race.
How does Tuffr help with a fitness race plan?
Tuffr is an iPhone app for athletes who train for fitness races and triathlon. It is not public yet: the closed beta is due by 30 November 2026, and a small group goes first. This is what we are building for the beta.
- A target for every run, station and transition, an entry test with a predicted finish time (an estimate), and a plan that closes the gaps. Library plans are free; the AI plan is part of Premium.
- Coach AI, which proposes changes to your plan. You see exactly what would change and why, and only what you approve reaches your calendar.
- A catalogue of races, so you can pick the one you are training for.
Note
You can follow this plan with a notebook or any calendar. Tuffr is a convenience, not a requirement. The free race split calculator already turns a goal time into a target for every run and station.Work out your split times
Enter a target finish time and get a pacing plan for the runs and the stations, for singles or doubles.
Use the race split calculatorFrequently asked questions
Sources
Published figures are quoted from these pages. Where datasets disagree we say so. Advice marked as our recommendation is not from a source.
- HyroxDataLab: Target split times by goal (accessed 5 November 2026)
- World Health Organization: Physical activity fact sheet (accessed 5 November 2026)
HYROX® is a trademark of HYROX World GmbH; IRONMAN® and 70.3® are trademarks of World Triathlon Corporation. Tuffr is not affiliated with or endorsed by these organisers.
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