The 5 Biggest Mistakes New Runners Make (And How to Avoid Them)
All runners have been there: you sign up for a fun race with friends or experience your first runner’s high. Suddenly, you're motivated and filling your calendar with runs over the next few weeks.
While enthusiasm is great, this is often when new runners unknowingly make mistakes that increase their risk of injury and burnout. The good news? Most of these mistakes are completely avoidable.
Here are the five biggest mistakes new runners make — and what to do instead.
1. Doing Too Much, Too Soon
One of the most common mistakes new runners make is ramping up too quickly. Running-related injuries from overtraining often don’t show up right away — they typically appear 3–4 weeks after a rapid increase in training.
When you suddenly increase your running, you place additional load on your tendons, muscles, and ligaments. This isn't inherently bad — tissues need load to adapt and become stronger. However, they also need time to adapt.
Research shows that new runners have injury rates between 20–50% in their first year. Even structured beginner programs like Couch to 5K have reported relatively high injury and dropout rates, often due to progression that may be too fast for some individuals.
What To Do Instead
Start slowly — both in frequency and intensity.
Begin with 2–3 runs per week
Include rest days between runs
Focus on time rather than distance
Setting your watch for time instead of distance can help keep intensity low and prevent pushing too hard to hit a mileage goal.
Keep most runs at a conversational pace — if you can’t comfortably talk, you’re probably running too fast.
Working with a physical therapist or coach can also help create an individualized program, which is one of the best ways to manage training load and reduce injury risk
2. Running Every Run at the Same Pace
Many runners assume that every run should be a hard workout. It’s easy to fall into the habit of running at the same moderately hard pace — especially if you're training for a race.
This “middle effort” approach can lead to:
Increased fatigue
Slower progress
Higher injury risk
Not every run should feel hard. Your body needs variation to improve and recover.
What To Do Instead
Pay attention to:
Energy levels
Stress levels
How your body feels
Some days should be slower to allow for recovery. On days when energy is high and stress is low, you can push the pace a bit.
A helpful guideline (but not a hard and fast run):
80% of runs at an easy pace
20% at higher intensity
Your easy pace may be 1–2 minutes per mile slower than race pace — and that’s completely normal.
3. Ignoring Strength Training
When the weather is nice, it’s easy to throw on your shoes and head out the door for your daily exercise. But skipping strength training can increase injury risk over time.
Running is repetitive. With each step, your body absorbs 2–3 times your body weight. Without adequate strength, tissues may struggle to tolerate that load.
Strength training helps:
Improve tissue capacity
Reduce injury risk
Improve running efficiency
Support long-term consistency
What To Do Instead
Keep it simple. Strength training doesn’t need to be complicated or time-consuming. Even 15–20 minutes, twice per week can make a difference. Don’t be afraid to add weight — runners benefit from progressive loading. Working with a physical therapist can help you find the right progression and avoid under- or over-loading.
Focus on:
Squats
Deadlifts
Lunges
Calf raises
Core work
4. Skipping Rest Days
When motivation is high, it’s easy to overlook rest days. But recovery is where adaptation actually happens. Running every day — especially when starting out — can quickly lead to fatigue and increased injury risk. Running yourself into the ground won’t make you faster — it just increases the likelihood of setbacks.
What To Do Instead
When starting out:
Keep a rest day between runs
Use rest days for strength training or mobility
Add extra rest during stressful periods
As you build consistency, try scheduling:
Easy runs after hard efforts
Lower-intensity weeks every few weeks
5. Not Fueling Your Runs
Many runners unintentionally underfuel their runs. This might happen because:
You run early and skip breakfast
You're unsure what to eat
You purposely run fasted
You assume shorter runs don’t require fuel
Your body needs energy to support training. Underfueling can lead to Low Energy Availability, which is associated with increased injury risk, fatigue, poor recovery, and poor performance.
What To Do Instead
Fuel before your run with simple carbohydrates 30–60 minutes prior.
Good options include:
Bagels
Pop-Tarts
Bananas
Toast
Sports drinks
If running longer than 30–45 minutes, consider bringing fuel during the run. This helps prevent the dreaded “bonk” and keeps energy levels steady. After your run, aim to eat carbohydrates and protein within 1–2 hours — sooner is even better. Recovery nutrition supports tissue repair and helps you get more out of your training.
Happy running!