On October 12, 2025, Sofia will once again host the Wizz Air Sofia Marathon – one of Bulgaria’s most prominent running events. An increasing number of people are inspired to take part in the marathon, but preparing for it requires strategy and discipline. Here are some of the most common mistakes runners make, and advice on how to avoid them.

1. Inadequate or Improper Preparation

A marathon is not a race you can prepare for in just a few weeks. Starting your training too late or relying solely on general fitness without a structured running plan is a common mistake.

Solution:
Plan your training at least 4–6 months in advance. Follow a progressive training schedule that includes long runs, interval training, and rest days.

2. Running Too Much, Too Fast

Overtraining or increasing your mileage too quickly can lead to injuries.

Solution:
Stick to the “10% rule” – increase your weekly mileage by no more than 10% compared to the previous week. Make sure to include recovery time and easy runs.

3. Skipping Strength Training

Many runners believe that running alone is enough to stay in shape. Neglecting strength training can result in weak muscles and joints.

Solution:
Incorporate core, leg, and balance exercises at least twice a week. This will boost your endurance and reduce the risk of injury.

4. Poor Hydration and Nutrition

Not drinking enough water or having a poor diet can leave you low on energy or cause stomach issues during the race.

Solution:
Experiment with nutrition and hydration strategies during your long runs. Make sure to consume enough carbohydrates and electrolytes, especially in the days leading up to the marathon.

5. Trying New Gear on Race Day

Your shoes and clothing can significantly affect your performance.

Solution:
Wear gear and shoes you’ve already tested and trained in. Never run a marathon in brand-new gear.

6. Poor Pacing on Race Day

Many runners start too fast and burn out before the final kilometers.

Solution:
Use a negative split strategy – start slower and gradually increase your pace. Monitor your speed with a running watch or app.

7. Neglecting Recovery

After long runs, it’s essential to give your body time to recover.

Solution:
Include active rest days, stretching, and massages in your routine. Quality sleep is also vital – aim for 7–9 hours of rest per night.

Ready for Wizz Air Sofia Marathon 2025?

If you’re not yet confident about running the full 42.2 km, the event also offers shorter distances – the half marathon (21.1 km), the 10 km Garmin Run, and the 5 km FIB Mass Run, which are great ways to test your endurance.

Whether you’re a beginner or an experienced runner, solid preparation is the key to a successful race. Avoid these common mistakes and enjoy the experience of running in a large-scale event with thousands of participants.