Help To Improve My 2.4k: Getting Started When Unfit

I need help to improve my run. I'm UNFIT and ran the 2.4k, walking, running and barely made it. It took 18 mins to finish.

Is it because I'm overweight too? I weigh 125 kgs.

– Mo

Answer by Dom:
Hi Mo, thanks for writing in. I want to say straight away that finishing the 2.4k (1.5 miles) is a good starting point. Covering that distance in 18 minutes with a mix of walking and running at 125kg (276 pounds) is a real effort. Now let's talk about how to improve it. Yes, your weight is a factor, and I'll address that honestly in a moment, but the biggest factor right now is your training approach. Because of your weight, please also check with your doctor before you ramp up your training. Here's what I'd do:

1. Start with run/walk instead of continuous running
2. Build progressively over three months
3. The weight question

Start with Run/Walk Instead of Continuous Running

The single most useful thing you can do right now is adopt a structured run/walk approach. This is a smart entry point when your body isn't yet conditioned for continuous running, and plenty of people run their first race this way. It protects your joints, keeps injury risk low, and lets your heart and lungs adapt without being overwhelmed.

Here's a session to start with: run for 30 seconds, walk for 2 minutes, and repeat that cycle for 25 minutes. That's roughly 10 running intervals in a session. Do this three times a week, with at least one rest day between sessions. Your body needs recovery time to adapt, especially at the beginning.

Run on soft surfaces as much as possible: grass, a running track, or a treadmill. Pavement is hard on the joints even for lighter people, and at 125kg (276 pounds) it increases your risk of shin splints and knee pain. The Beginner Running Program 3 on this site uses exactly this kind of progressive run/walk structure and is worth reading for more detail.

Make sure you have proper running shoes. Fashion sneakers and old gym shoes won't do. You want cushioned running shoes fitted by someone who knows what they're doing. At your weight, the right footwear matters a lot for both comfort and joint protection.

Build Progressively: What the Next Three Months Look Like

My advice is simple: be patient and build up step by step. Here's what that looks like month by month. It's the same principle I use with the candidates I coach: build the base first, speed later. One candidate, Aaron, took 2 minutes off his 1.5 mile time in the first six weeks purely by building up easy mileage (you can read his story here), before any speed work started.

Weeks 1-4: The run/walk sessions I described above. Your goal in this phase is simply to get three sessions done per week, consistently. Don't worry about pace. Don't worry about distance. Just get the sessions done. By the end of week four, try to extend your running intervals (the running parts of your run/walk) from 30 seconds to 1 minute, with 90 seconds walking in between.

Weeks 5-8: Extend the running intervals. Go from 1 minute of running to 2 minutes, then 3 minutes, with shorter walking breaks. By week eight, aim to run for 5 minutes continuously before walking. Five minutes of continuous running might feel a long way away right now. It's closer than you think, and it often moves faster once your body starts adapting.

Weeks 9-12: Work toward running the full 2.4k (1.5 miles) without stopping. By now your walking breaks should be short (30 seconds) and infrequent. When you can run 2.4k (1.5 miles) without stopping, even slowly, you have the base to start working on the time. After that, build up to running 5 miles. When you can run 5 miles easily, running a fast 1.5 miles (2.4k) becomes a very different proposition. That takes patience, Mo, and it works.

Once you can run the 2.4k without stopping and want to work on the time, my 1.5 mile run training plan page shows how AceTheTest, the plan generator I built, creates a day-by-day plan around your current time and test date. It's free to start.

The Weight Question

Yes, Mo, the extra weight does make running harder. Every extra kilogram (2.2 pounds) you carry over 1.5 miles adds effort. That is simply how it works, and there's no point pretending otherwise. But here's the important part: running can help with weight loss, so the very thing you're doing to improve your time can also help with the thing making it harder. That works in your favor.

Don't wait until you've lost weight to run. Start running and let the weight follow. Even modest weight loss will make a noticeable difference to how running feels and how fast you go. Many people lose somewhere around 5-10kg (11-22 pounds) over three months of consistent training and sensible eating, though it varies a lot from person to person. Combine the training with straightforward eating habits: less processed food, less alcohol, and proper meals with protein. You don't need a complicated diet plan, just consistent, sensible food choices alongside consistent, sensible training. My page on running for weight loss goes into this in more detail.

What I want you to take away from this, Mo, is that 18 minutes at 125kg is where you start, and it will come down.

A few practical points. Take rest days: three runs a week with a rest day in between is plenty at the start, and running every day as a beginner raises your injury risk a lot. If knee or shin pain doesn't go away, take a few days off and see a doctor or physical therapist. And expect noticeable improvement within six to eight weeks of consistent training, with a time under 14 minutes realistically taking three to four months.

Your next step: once your doctor has cleared you, do your first run/walk session this week.

All the best,
Dom

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