Training for the Dozen
The Deadly Dozen needs no new skills and no specialist strength: it needs specific capacity in three or four places most training plans skip. This page names those places, gives you the benchmark sessions that measure them honestly, and shows how the work fits into a normal training week without taking it over.
- Running
- 12 × 400 m
- Lane work
- 900 m
- Reps at load
- 320
- Skill required
- None
What the race actually tests
720 m of loaded carries, 60 heavy kettlebell deadlifts and every dumbbell Labour draw on one shared account: forearm endurance. The race is designed so no single withdrawal hurts; it is the compound interest that decides finish times. Grip is also the most trainable quality on this list, which makes it the highest-yield hour in any Dozen preparation.
Three of the six distance Labours are loaded carries: 660 m of walking with weight, in three different positions (at the sides, on the chest, overhead). Carry pace under fatigue is almost pure training history: athletes who carry weekly walk the lanes 30–40% faster than equally fit athletes who never do, and no other quality converts to time this directly.
Twelve 400s off twelve Labours is not a 5K and not a track session: it is broken running on legs that keep being interrupted. The requirement is not speed but repeatability: a pace you can produce twelve times with a climbing heart rate. A solid 5K is the entry ticket; the race-specific quality is how little your lap 11 differs from your lap 2.
320 reps of untechnical movement at moderate loads. Nothing on the card requires skill work in the CrossFit sense; everything on it requires the capacity to keep moving through big honest sets while breathing hard. General hybrid training covers most of this; the gap to close is nearly always specific volume at race loads, not intensity.
The benchmarks: know before you enter
Four sessions, each measuring one thing the race will measure anyway. Run them at the start of a training block to find the gap, and again at the end to prove it closed.
All twelve reps inside the interval with the twelfth within 5 seconds of the second: ready. Fading more than 15 seconds across the set: the engine is not yet Dozen-shaped, whatever your 5K says. Advanced athletes tighten the interval to 2:15 or 2:00.
Under 45 minutes is on course for a sub-100 race; under 40 is competitive shape. More useful than the time is the diagnosis: note which Labour split was furthest from the planner's target, and that is the next block's priority.
Carry inside 3:30 with two set-downs or fewer, then a 45-second hang: the grip will hold to Labour 12. A carry in fours with five set-downs predicts exactly where the back half of your race will leak.
The middle block under 5 minutes without singles: race-ready. This is the single most predictive session for the full Dozen, and it is worth running monthly in a race block with the set scheme you intend to use on the day.
A week that fits around your training
Not a program, a shape: keep your base, slot the specifics. The only genuinely non-negotiable line is the carry block, because carries are the quality nothing else you do trains by accident.
| Day | Session | The work |
|---|---|---|
| Day 1 | Strength + carries | Main lift, then the carry block: farmers, front and overhead carries, 400–600 m total. The non-negotiable session. |
| Day 2 | Intervals | Track or road 400s: 8–12 reps at target Journey pace on short recovery, building repeatability rather than speed. |
| Day 3 | Mixed conditioning | Labour movements inside conditioning pieces at race loads: snatch, goblet squat, push press, burpees, in big honest sets. |
| Day 4 | Easy run + crawl and grip | Easy aerobic running, then the cheap insurance: bear crawl lengths, hangs and holds. 20 minutes that buys minutes. |
| Day 5 | Race simulation (alternating weeks) | A benchmark from this page, or a couplet day: run-Labour-run blocks at race intensity. The other weeks: a second interval or strength session. |
Race week, and the day itself
Last big session: The Half Dozen or The Decider, full intensity. Everything after this maintains, nothing builds.
Halve the volume, keep small fast touches of everything: a few 400s at race pace, short carry lengths, 20 snatches. Nothing to failure, nothing new.
Twenty minutes: easy jog, two strides, one length of each carry at race load to calibrate the hands. Pack tape, chalk if permitted, and warm layers for trackside.
Warm up the hinge and the grip, not just the legs: two short carry lengths and ten light snatches before your wave does more than any amount of jogging.
Write your set schemes for Labours 2, 4, 8 and 10 on your hand or wristband. Decisions made at heart rate 170 are reliably worse than the ones made at breakfast.
Turn fitness into a plan
When the benchmarks say you are close, the Race Planner turns a recent 5K into the actual wristband: a target finish, Journeys against Labours, and a split for all twelve rounds, tuned to your division and profile.
Frequently asked
How do I train for a Deadly Dozen?
Keep your normal strength and running base, then add the race's three specifics: a weekly loaded-carry block (farmers, front and overhead carries), one repeat-400s interval session, and Labour movements done in big sets at race loads inside conditioning. Grip endurance is the highest-yield single quality: it is drawn on by more than half the card.
How long does it take to get ready for a Deadly Dozen?
An athlete who already trains three or four times a week can be honestly ready in six to eight weeks of adding the specifics above. The limiting factor is rarely fitness: it is carry pace and grip endurance under fatigue, and both respond quickly to direct weekly work.
What running fitness do I need for a Deadly Dozen?
The race is 4.8 km of running in 400 m pieces, so a continuous 5K is the sensible entry ticket. Repeatability matters more than speed: passing the Journey Test (12 × 400 m off 2:30 with even splits) predicts a comfortable race better than any single 5K time does.
Do I need to practise the exact Labour movements?
Yes, but the list is mercifully short and requires no skill work: carries, kettlebell deadlifts, walking lunges, dumbbell snatches, burpee broad jumps, goblet squats, push presses, bear crawls, plate ground-to-overheads and devil presses. The two most neglected are the bear crawl and the loaded carries, and they are exactly where untrained minutes hide.
Keep going
Every Labour in race order: the target, the loads, what it actually costs, the technique cues that protect your time, and how to train each one.
How each way of racing it actually works: solo, pairs, relay of four, the indoor Deadly Sprint and the 12-hour Ultra, with the tactics that suit each.
Turn a recent 5K into a realistic Deadly Dozen plan: a target finish, Journeys against Labours, and a lap-by-lap wristband for all twelve rounds.
The format at a glance, how it compares with Hyrox® and ATHX, and every upcoming Deadly Dozen on the calendar.
Training guidance is Sweatlas editorial for healthy, trained adults: general information, not coaching or medical advice. Loads and targets follow the current rulebook; verify against deadlydozen.com before racing.