HYROX® training week: 3 to 6 days compared

How many days a week should I train for a fitness race?

Three days is the minimum we suggest, four is the best fit for most athletes, five works when the extra session is easy, and six suits only experienced athletes with a solid running base. This is our recommendation and it matches the 12-week plan, which uses four sessions with three and five as options.

For context, the WHO advises adults to do at least 150 minutes of moderate-intensity activity a week. Three sessions of about an hour already add up to more time than that, at a higher intensity, so start from what your body is used to and build slowly.

In what order should I do running, strength and station sessions?

Space the hard days and put the session that needs fresh legs first. Give the quality run and the long mixed session separate days with an easier day between them, and lift heavy with your legs at least a day before either. These rules are our recommendation, built on the evidence below.

1. Keep session C (quality run) and session D (long mixed session) apart, never on back-to-back days.
2. Do heavy leg lifting in session B at least one day before C or D, so your legs are fresh for the runs.
3. Follow a hard day with rest or the easy run A. Easy running adds volume without costing much recovery.
4. Treat hard station circuits and race simulations as hard days, the same as C and D.
5. If two sessions share a day, put the one that matters most first and leave about three hours between them. Pair an easy run with lifting, and avoid a quality run plus heavy squats.

On the research side, a 2018 meta-analysis of 10 studies found that lifting before endurance work gave about 7 percent larger gains in lower-body dynamic strength than the reverse order, with no clear difference in muscle size. A 2022 meta-analysis of 43 studies found that explosive strength suffered more when strength and aerobic work shared a session than when they were at least 3 hours apart. Both studied healthy adults, not fitness racers, so treat them as a guide to the order, not a promise.

What does a 3-day fitness race training week look like?

A three-day week keeps the three sessions that matter most: B (stations and strength), C (quality run) and D (long mixed session). The letters match the 12-week plan: A is the easy run, B stations and strength, C the quality run and D the long mixed session. Space them with a rest day between each.

If you can only train three times, protect C and D first, then B. See how to run the compromised runs that go into C and D.

What does a 4-day fitness race training week look like?

A four-day week adds the easy run A at the start, and it is the standard week of the 12-week plan. Two sessions are hard (C and D), one is moderate (B) and one is easy (A). You get three days off, which is enough to absorb the work.

How much running do you need explains the weekly kilometres for each level, so you can size A, C and D to your base.

What does a 5-day fitness race training week look like?

A five-day week is the four-day week plus an easy session E on Wednesday: a 30 to 45 minute bike, swim or row. It adds aerobic volume with little impact on your legs, so it must stay easy. If it starts to feel like work, drop it.

Swap E for a swim or a bike when your legs need a break from impact, and keep the runs in A, C and D as runs.

What does a 6-day fitness race training week look like?

A six-day week adds a short strength session F on Friday to the five-day week. It covers the upper body and trunk, with no heavy leg work, so your legs are fresh for the long session on Saturday. Sunday stays a full rest day. Six days only suits athletes who have handled five well.

How does the training week change across the 12-week plan?

The days stay the same through the plan and the content of the hard days changes with the phase. Base builds easy volume and technique, build adds compromised runs, peak adds simulations, and the taper cuts volume to about 70 percent in week 11 and about half in week 12. This is our recommendation.

Weeks 4 and 8 are deload weeks. Keep the same days but cut volume by about a third and keep every session easy to moderate. The sets and reps for each phase are explained in the strength training guide.

How can Tuffr help me plan my training week?

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 a week like the ones above.

• A week that closes the gaps to your targets for each run, station and transition, with running, stations and the gym in one plan.
• Coach AI, which proposes changes to your week. You see what would change and why, and only what you approve reaches your calendar.
• A gym log for sets, weights and rest, kept next to your running and cycling.