RETO RUN: The Complete Beginner’s Guide

Team RETO CrossFit · First cycle: October 6–November 29, 2026

You do not have to join Reto as a runner. You can become one, one manageable outing at a time.

RETO RUN is self-guided running programming included in your Reto CrossFit membership. It gives you a starting point, a goal and a clear session to follow. The first block lasts eight weeks. Your progress may take longer, and repeating a week is part of the process.

You do not need a GPS watch to start RETO RUN. You do not need $250 shoes, supplements or a target pace. Comfortable shoes, a safe place and a willingness to begin are enough to take the first step.

Start with one clear session

1. Choose your level.

2. Write down your goal and running days.

3. Open Wodify, find RETO RUN programming and RUN 01 for your week. Follow your level only.

4. Read the warm-up, main block and cool-down. START, BUILD and PERFORM are alternatives, not three workouts to stack.

5. Record your time and effort afterward. Check how you feel the next day.

Why run when you already do CrossFit?

Running offers a simple way to practice sustained effort outside the gym. You learn how to settle your breathing, find a repeatable rhythm and stay moving comfortably. Finishing exhausted is not the goal. Being able to return next week is.

Strength and aerobic training can coexist. Research does not support assuming that running automatically cancels strength gains, but it also does not make unlimited extra training a good idea. Explosive performance can be more sensitive to how sessions are combined. Concurrent training review.

Choose your level in two minutes

Use your recent routine, not the runner you were several years ago.

If the last answer is yes, or you are unsure whether starting is safe, pause automatic placement and seek appropriate professional guidance. Keep personal medical details out of public workout results.

START: you run for less than 20 minutes continuously, run only 0–1 days weekly or are returning without four weeks of consistency. You will alternate jogging and walking. Being comfortable walking for about 20 minutes is a practical entry point; otherwise begin with shorter walks you tolerate.

BUILD: you can run comfortably for at least 20 minutes and have run twice weekly or more for four weeks. You will develop consistency and endurance without racing every session.

PERFORM: you meet every criterion: 45 comfortable continuous minutes, at least three runs weekly for eight weeks and roughly 110 recent weekly running minutes that you tolerate well. If one is missing, begin with BUILD.

These are RETO’s practical placement rules, not medical tests or talent labels. Pace does not determine your level. When in doubt, choose the lower starting point.

Pick one goal

Choose one direction for this block:

• Start consistently: establish a repeatable running habit.
• My next 5K: finish with walking breaks, run continuously or build toward a faster time, depending on your level.
• Run better for CrossFit: manage effort and improve your aerobic foundation.

A 10K or HYROX goal can guide a later block. This foundation cycle is not a complete HYROX race plan and does not guarantee 10K readiness.

Write: “Over eight weeks, I want to __. My level is __. My running days are __. My target date, if relevant, is __.” A useful START goal is two comfortable outings each week for the first month. Review it in weeks 4 and 8. If a race is too close, adjust the expectation or the date instead of squeezing weeks together.

Run/walk is real training

Run/walk means using planned walking breaks before you become exhausted. Walking is how you control the dose, not evidence that you failed.

Your first START RUN 01 is a five-minute walk, 12 rounds of 30 seconds of easy jogging and 60 seconds of walking, then a five-minute walk. That is 28 minutes total with only six minutes of jogging. If 30 seconds is too much, shorten the jog and walk longer. Stop if walking also hurts.

The NHS also uses run/walk and recovery days to introduce running. RETO’s progression is its own and accounts for CrossFit alongside it. NHS beginner running plan.

How often and how much?

Three sessions are available: Tuesday RUN 01 easy, Thursday RUN 02 control/quality and Sunday RUN 03 easy endurance. START prioritizes 01 and 03 for the first two weeks; 02 is optional if recovery is good. Two outings may also be the right starting dose when you attend CrossFit three or more days a week.

Shift a session by about one day when necessary, keeping the order and a non-running day between outings. Moving Sunday to Monday means the next Tuesday run must also move or be skipped. You do not have to fill all seven days.

“Long” means longer for your level. It does not mean chasing mileage. START can add walking time without more running. Its quality session remains easy; BUILD and PERFORM gradually introduce controlled work with clear recovery intervals.

Repeat a week when needed. Progress only when the sessions you chose felt manageable and you recovered for the next one. Do not raise frequency, speed and duration all at once. A fixed weekly percentage cannot guarantee injury prevention: recent research on single-run distance spikes is observational, not a universal prescription. 2025 running cohort.

Pace, effort and the talk test

Pace is time per kilometre or mile. It can help compare runs, but hills, heat, wind and fatigue change it. You can train effectively without knowing your pace.

RETO uses a practical 0–10 effort scale: zero is rest and ten is your imagined maximum. Easy is roughly 2–4: full sentences feel comfortable. Controlled is 5–6: conversation takes more pauses. Seven is challenging but contained, used only in specific PERFORM blocks. This cycle does not require 9–10 efforts.

Try saying, “I could keep this effort going for a while.” If an easy run leaves you with only a few words at a time, slow down or walk. This is an effort check, not a precise test of lactate threshold or heart-rate zones. CDC: measuring intensity.

Breathe through your nose, mouth or both as feels natural. You do not have to force nasal breathing or follow a fixed counting pattern. Relax your hands and shoulders and let your steps feel comfortable. There is no universal cadence you must hit, and this is not the moment for a dramatic change in foot strike.

Warm up, then finish gently

Follow your session card. START walks into the workout; BUILD and PERFORM use easy jogging plus simple movement. Gentle ankle movement and marching are enough to prepare the transition without an intense jumping routine or painful stretching.

Walk for five minutes at the end and notice how you feel. Stretching or a roller may feel pleasant, but neither erases excessive training or replaces rest. AAOS safe exercise guidance.

Fit it around CrossFit

Count everything: demanding squats, lunges, jumps and running inside a WOD all load your legs. You do not need to complete every available workout to benefit.

With two gym days, one option is Monday/Friday CrossFit, Tuesday 01, Thursday 02 and Sunday 03, with Wednesday and Saturday free. If you attend Monday, Wednesday and Friday, start with Tuesday 01 and Sunday 03 and keep Thursday and Saturday for recovery. Adjust to what the WOD actually contains.

Leave an easy day between demanding sessions. When your legs remain tired from yesterday, make quality easy or skip it. If strength and running share a day, separate them by several hours when possible, prioritize your main goal and avoid two hard sessions. Keep at least one day without structured training.

Recovery and reasons to stop

General muscle tiredness that improves and does not change your walking can accompany something new. Pain is not required for progress. Adequate sleep, regular meals and genuinely easy days are the foundation.

Stop running for increasing localized pain, limping or pain when bearing weight. Get assessed if it persists, returns or affects everyday activity. Focal bone pain or pain while walking deserves attention, not a self-diagnosis from this guide. AAOS: stress injuries.

Chest pain or pressure, fainting, confusion or severe unusual breathlessness calls for urgent medical attention. Do not keep going to finish the timer. This is general training education, not treatment or rehabilitation.

Running in Puerto Rico

Heat and humidity can make your usual pace feel much harder. Choose cooler hours, shade and short routes with water access, and check local alerts. Reduce the session or walk somewhere cooler when conditions are difficult. Seek proper shelter and postpone during lightning.

Let effort guide pace. When beginning or returning from a different climate, reduce heat exposure and build gradually. Stop and move somewhere cool if you feel weak or dizzy. Confusion, collapse or other serious symptoms require emergency help. CDC: heat and athletes.

Equipment: solve a need, not a shopping list

Shoes

Look for immediate comfort: room for your toes, a secure heel and no pinching or rubbing. Try them with your running socks and walk or jog briefly. Do not buy too small for looks or assume pain will disappear after breaking them in. AAOS shoe fitting guidance.

Running shoes generally emphasize comfort through repeated forward strides. CrossFit shoes typically favor a firmer platform for lifting and movement in several directions. A comfortable pair you already own may be enough for a short first outing; regular running may justify a dedicated pair.

More cushioning is not automatically better. The shoe should feel comfortable and stable to you. Stability models provide different types of support; a picture of your arch does not have to make the purchase decision. Get professional input for persistent symptoms or specific needs.

Carbon-plated shoes are performance-oriented equipment, not a prerequisite for learning. Beginners do not need to pay for them. Avoid abruptly switching to a very different design from what you already tolerate.

Check grip, outsole wear, fit and underfoot feel. Consider replacement when wear affects function or discomfort warrants review. No mileage number is an exact expiry date for every shoe, and not every ache is caused by footwear.

Clothing

Choose shorts that move freely and light shirts that do not become heavy with sweat. Socks should fit smoothly without irritating seams. In humid weather, preventing rubbing often matters more than the label.

Try anti-chafing products where needed on intact skin and follow their directions. A comfortable sports bra with appropriate support can make running easier for those who need one; test movement, breathing and fit. A hat, UV-protective sunglasses and sunscreen complement shade. Follow sunscreen reapplication directions. In low light, use reflective gear and a light that also helps you see the ground.

Watches and apps

You do not need a GPS watch to start RETO RUN. A phone timer, simple watch or companion keeping time handles the intervals. Without technology, alternate familiar nearby landmarks with brief jogs and longer walks. Treat that as an approximate adaptation, not an exact benchmark.

A watch records time and estimates distance/pace from GPS; its optical sensor estimates heart rate. Calories, VO₂ max and recovery scores are algorithmic estimates, not diagnoses. Buildings, trees, sensor fit and motion can affect readings. Duration, effort and consistency matter most at the start.

These are examples, not required purchases or a ranking of accuracy. Features and availability can change; reviewed September 27, 2026. Keep using a device that already does what you need.

Strava records and saves activities from a phone; check map privacy before sharing. Nike Run Club offers tracking and guided runs; do not add an entire second training plan on top of RETO. Garmin Connect gives Garmin users a place to review history. All are optional, and automatic Wodify synchronization is not promised.

NEED / USEFUL / OPTIONAL

You do not need all of this to start. Needs depend on the setting: a watch does not replace water access or nighttime visibility.

Food, fluids and supplements

For a short easy run, your normal recent meal may be enough. If hungry, try a small familiar snack such as fruit or toast and allow it to settle. Avoid experimenting with a large meal immediately before running. Afterward, a meal with carbohydrate and protein plus fluids usually covers the basics. You do not need a compulsory shake or a recovery window measured in a few minutes. AIS nutrition resources.

Begin normally hydrated and plan fluid access, especially in heat. Drink regularly according to thirst, conditions and tolerance without forcing litres to meet an arbitrary quota. Electrolytes can help during prolonged effort or heavy sweating; they do not cancel heat risk or make overdrinking safe. Individual needs vary. Endurance nutrition review.

Most short sessions here do not need gels. Once a run or race lasts beyond an hour, carbohydrate during exercise can matter more: roughly 30–60 g per hour is a common reference for prolonged efforts, not a requirement for a 30-minute run. Practice tolerance before racing and seek a sports dietitian for an individual plan when needed. AIS carbohydrate guidance.

Evidence versus marketing: caffeine may help performance but disrupt sleep or cause jitters; creatine is more relevant to strength/power than getting started with running; protein powder is convenience, not necessity. BCAAs and pre-workout blends do not replace food. Take iron only with professional indication, not because you assume tiredness means deficiency. NIH exercise supplements.

Nitrates/beetroot, beta-alanine and bicarbonate have specific applications, variable responses and potential unwanted effects. Evidence for a use does not make a product appropriate for everyone. AIS supplement framework.

Start with ordinary food, sensible hydration and consistency.

Mistakes you can skip

Starting too fast, racing recovery intervals, skipping ahead to catch up, stacking two apps’ plans, copying someone else’s pace and buying equipment before building the habit. Ignoring weather or pretending a WOD does not count because it is not called running can also undermine the plan.

After one missed week, return to the last comfortable week and reduce it if needed. After longer interruptions, illness or injury, reassess your level. There is no mileage debt to repay.

Track what helps

Write “W1-R01 · START · completed/adapted · 28 min · RPE 3.” Distance is optional. Keep the actual date if you moved the workout. Total minutes include walking, warm-up and cool-down; they are not a 5K race time.

In week 8, repeat week 1 RUN 01 using the same block, route and similar conditions. Notice easier conversation, lower effort or better recovery. It is not a time trial, and different weather can change the result.

Frequently asked questions

Must I run three times each week? No. Three sessions are available; START begins with two, and your CrossFit load and recovery guide the rest.

Does walking count? Yes. It is part of the session.

Will I finish a 5K after eight weeks? That is not guaranteed. Repeat weeks as needed. Thirty minutes of running is not necessarily five kilometres.

Can I change levels? Review in weeks 4 and 8. Move down sooner if the workload is too much; stop for symptoms that need assessment.

Do I need GPS or supplements? No. A basic timer and normal food are enough for most people starting out.

Is this an in-person class? No. It is self-guided programming included in your membership.

What if RETO RUN is missing in Wodify? Ask Reto to check access. Do not buy another plan or book CrossFit to try to unlock it.

Take the next step

Choose your level. Set your goal. Open Wodify. Start running.

Not a member yet? RETO RUN is included in your Reto CrossFit membership: structure for training in the gym and getting started outside it. Ask Reto how to join.