Can You Run a Marathon Without Training?
So, can you run a marathon without training? Some people manage it, but it does far more harm than good. Here is what can go wrong and why training matters.
It seems like everyone is training for a marathon running event these days, and the pressure to sign up for one can be daunting. Perhaps a friend has talked you into it, or you have a charity place and little time. So, can you run a marathon without training? Our short answer: don't do it.
Do not run a marathon without training for it. The risks and negative effects you expose yourself to are too many, and you will thank yourself later if you postpone the race until you have had time to prepare properly.
What is marathon training?
Marathon training is different for everyone. Some people reach their best with just three sessions a week, while others do better with five or six days of running and cross-training. The training you need depends on your schedule, your current fitness, past injuries, medical conditions and much more.
Do not feel guilty if you have only run three times this week and not six like your training partner or that Instagram influencer. A swimmer or cyclist with a solid endurance base might find a marathon less of a shock than someone who has done no exercise at all. Even then, the impact of running on legs and joints is very different from swimming or cycling, so it is still advisable to train for the marathon itself.
Running a marathon without training: the consequences
Running 26.2 miles is physically demanding. Beginners should ideally start training at least four months before the event. If you attempt a half or full marathon without adequate training, you increase the chance of ending your day in the medical tent or worse. Common running injuries include:
- patellofemoral pain syndrome (runner's knee) or iliotibial band (ITB) syndrome
- Achilles tendinitis at the back of the ankle
- shin splints in the lower leg
- plantar fasciitis under the foot
Beyond injuries, untrained runners are more likely to suffer from severe cramp, blisters, chafing and exhaustion, and to struggle with heat on a warm race day.
Your long-term running may suffer
A painful first marathon can leave a lasting negative image of running. Many people who attempt a marathon without training never run again, so the race that was meant to be the start of something becomes their first and last. That means missing out on the pleasure, health benefits and friendships that running can bring.
Skipping a solid training plan also makes it far more likely that you will hit "the wall", the dreaded point in a marathon when your energy stores run out and every step feels heavy. While the wall can happen to anyone, runners who have trained and practised their fuelling usually cope much better.
What to do instead
If your race is only weeks away, consider switching to a shorter distance or deferring your place, if the organiser allows it. If you have a few months, follow a gradual plan such as the one in our marathon training plan and read our marathon running tips. If you have a medical condition, an injury or any doubts about whether you are fit to train, talk to your GP before you start.
