Most runners ask themselves at some point on the journey, how many miles should I run a week? Sometimes they ask it at the start of their training, or perhaps after one or two painful 5K race distances. The answer is that it depends. The key factors that determine the right answer for you are your goals, fitness level, and any issues, such as knee problems.
Still, “it depends” isn’t the entire picture, so let’s get more specific. The following article provides guidelines on how many miles to run, whether you’re a beginner or not, and whether you’re training for a 5K, half-marathon, or even a marathon. So, let’s get into what you need to answer: how many miles should I run in a week, for your specific situation?
How Many Miles Should You Run Per Week to Stay Healthy?
As you know, it’s not necessary to become a marathoner to get great health benefits from running. The fact is that you don’t even have to run so much to get the wins. In a study published by the Mayo Clinic, running as little as 6 miles per week (about 50 minutes spread out across the week) is associated with a longer lifespan. 6 miles in a training plan. That’s all.
For general health, most experts suggest that 10-20 miles per week is the sweet spot. By running each week, you build your cardiovascular fitness, help ensure weight management, and reduce the risk of chronic disease. If you’re new to running, you can start with 2 or 3 runs totaling 8-12 miles. Of course, if you have risk factors, visit a doctor before starting any physical training plan.
Here’s a quick reference for weekly mileage by general goal:
| Runner Type | Suggested Weekly Mileage |
| Complete beginner | 8–12 miles/week |
| Casual runner (fitness/health) | 15–25 miles/week |
| Intermediate runner (improving) | 25–40 miles/week |
| Advanced runner (competitive) | 40–60+ miles/week |
How Many Miles a Week Should I Run, Based on My Goals?
General health and wellness are one thing, but creating a race training plan is a whole different conversation. Once you have the specific date of a road race on your calendar, it’s time to plan your training in reverse. Your weekly mileage has to match the goal (e.g., 5K race distance, half-marathon, or marathon). The following is what you need to know.
Training for a 5K
A 5K is just over 3.1 miles. But while it’s short, it’s deceptively tough if you’re not prepared. A training plan typically has 15-25 miles per week at the peak to train for a 5K race. Still, if you’re a newbie, you’ll want to stay in the 10-15 mile range and build up from there over 8-10 weeks. The goal isn’t to run many miles, but to build an aerobic base to run efficiently and comfortably cover the 3.1 miles.
A typical beginner 5K training plan week might look like this:
- Monday: Rest or cross-train
- Tuesday: 2–3 mile easy run
- Wednesday: Rest or walk
- Thursday: 2–3 mile easy run
- Friday: Rest
- Saturday: 3–4 mile long run
- Sunday: Rest
This run is about 7-10 miles each week, which is where you should be if you’re just starting. As race day gets closer, you should increase your miles and perhaps even do some speed work.
5K Weekly Mileage Summary:
| Training Phase | Weekly Mileage |
| Early weeks (beginner) | 8–12 miles |
| Mid-training | 12–18 miles |
| Peak week | 18–25 miles |
| Taper (1–2 weeks before race) | 10–15 miles |
Training for a Half Marathon
A half-marathon is 13.1 miles, which is a serious distance. If you’re creating a training plan for a half-marathon, you should prepare to build to a peak of 30-45 miles per week. If you’re a beginner, you should peak at 25-35 miles. And if you’re an experienced runner, you will likely push toward 40 miles plus. The long run before race day should reach 10-12 miles, whatever your level of experience.
For most half-marathon plans, you should prepare to run 4 to 5 days a week. For instance, you could do the following:
- Two short, easy runs of 4.6 miles each.
- One mid-week medium run of 6-8 miles.
- One long weekend run that builds progressively.
- The remaining days are for rest or cross-training.
If you’re not sure where to begin, most coaches suggest a training plan that’s at least 3 to 6 months from your half-marathon day.
Half Marathon Weekly Mileage Summary:
| Training Phase | Weekly Mileage |
| Base building (beginner) | 20–30 miles |
| Mid-training | 30–40 miles |
| Peak week | 35–45 miles |
| Taper (2 weeks before race) | 20–25 miles |
Training for a Marathon
As most people know, a marathon is 26.2 miles, and it’s not a run where you can take any shortcuts to finish. As you consider, how many miles should I run a week, a typical marathon training plan spans 12-20 weeks and builds to 40-60 miles per week. The anchor, of course, is the long runs where you have to reach 18-22 miles. Those runs are typically done every other week with shorter runs in between.
If you’re training for your first marathon, the following is a realistic breakdown of what your running mileage should look like:
Marathon Weekly Mileage Summary:
| Training Phase | Weekly Mileage |
| Early base building | 25–35 miles |
| Mid-training buildup | 35–50 miles |
| Peak weeks | 45–60 miles |
| Taper (3 weeks before race) | 25–35 miles |
How to Safely Increase Your Weekly Mileage
No matter what race you’re aiming for, the general rule is to build in 10% increments. So, don’t increase your run in a new week by more than 10% to prevent injury, such as stress fractures, shin splints, or IT band syndrome.
A few other practical tips include the following:
- Run easy. Most of your miles should feel comfortable.
- Build for 3 weeks and pull back. Reduce running for a recovery week before rebuilding.
- Listen to your body. Fatigue is normal, but pain that changes your gait is a sign.
- Crosstrain on rest days. Cycling, swimming, and yoga are all good options.
Find Your Goal, Set Your Mileage, Get After It
As you create a training plan, remember to start with your goal and work backward from race day. Make sure to increase miles to protect your body gradually. And as you and any running partners rotate your athletic shoes (approx. every 300-500 miles), remember not to trash them. They still have value. Sneakers4Good helps you make an impact in your community and beyond when you get started.
Frequently Asked Questions
Can beginners run every day?
The short answer is yes, but it’s not recommended. Beginners require more recovery time between runs to allow muscles, joints, and the body to adapt to the new stressors. Most coaches recommend starting slow with runs 3-4 days a week, plus cross-training.
How many miles a day is healthy to run?
To stay healthy, you should run 1-3 miles a day over 4-5 days each week. But if you’re in training for a race, daily mileage will vary. So, plan accordingly and map it out to achieve your goals and prevent injury.
What is a good weekly mileage for marathon training?
Most marathon runners peak at 40-60 miles per week. However, beginners peak at about 35-45 miles, with more experienced runners going a bit higher. The fact is that specific miles matter less than consistency and sticking to your training plan.
How long should I run for 5K training?
A 5K training plan typically lasts 8–10 weeks, with 12 weeks being ideal, for newbie runners. Typically, weekly mileage is about 8–12 miles, and you’ll build to a peak of 18–25 miles in the final weeks before a race.
Do race distances affect how many miles I should run per week?
Absolutely. The longer the race, the higher your weekly mileage has to be. A 5K requires far less training than a marathon. That’s why it’s essential to match your training plan to the distance of your race goal rather than following a generic running schedule.
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