So, you’ve signed up for your first marathon? Amazing! Whether it’s been on your bucket list for years or you signed up on a whim (we’ve all had those moments), I’m genuinely so excited for you.
Running 26.2 miles is a huge achievement, and while it might feel overwhelming right now, it’s absolutely doable with the right mindset, a solid training plan, and a bit of support along the way. I’ve run over 15 marathons and I still remember how it felt training for that very first one. That mix of nerves, excitement, self-doubt and “what have I done!?” is completely normal.
This guide is packed with my top marathon training tips for beginners – from choosing a plan that fits your life to getting through race day with confidence and a smile on your face. Let’s make your first marathon one to remember.
1. Start with a Training Plan That Suits You
One of the biggest mistakes new runners make is picking a training plan that doesn’t fit into their life. Your marathon plan shouldn’t feel like a punishment – it should feel manageable and realistic.
Choose a plan that matches your fitness level
Are you completely new to running, or are you already comfortable with 10k or half marathon distances? Pick a plan that reflects where you’re starting from. Most beginner plans are 16 weeks long, but if you’ve already built a base, 12 weeks could be enough.
I personally love using Runna for training plans – especially for first-timers. It tailors the plan to your fitness level and adapts as you go. Use my code RWR2 for a free trial.
Be consistent
Aim to run 3 to 5 times a week. Getting into a rhythm helps your body adapt and builds confidence. Try to schedule your long runs on the same day each week, ideally matching your actual race day, so your body gets into a routine.
One of the biggest mistakes I see new runners make is picking a plan that doesn’t suit their life. Your marathon training plan should feel doable and realistic – not like it’s taking over your world.
2. Training Tips I Wish I Knew Before My First Marathon
Marathon training isn’t just about clocking miles – it’s about preparing your body and mind for the challenge ahead.
Slow and steady really does win
Long runs are not about speed. Go slower than you think you need to. If you can’t hold a conversation, you’re going too fast. These runs are about building endurance, not racing.
Practise your fuelling early
Use your training runs to test breakfasts, hydration, energy gels and snacks. Your stomach might love one gel and hate another and you do not want to find that out at mile 18 on race day.
It’s fine if you never run 26.2 before the big day
Most training plans peak around 20-22 miles. That’s totally normal. Tapering, adrenaline and crowd support will carry you through the final few miles.
Wear your race day kit in training
No surprises! That shiny new top might look cute, but it could chafe like mad. Run in everything at least once before race day. Need kit inspo? I’ve shared my favourite women’s running gear here.
Trust the taper
The final two weeks will reduce your mileage, which can feel weird when you’re used to big runs. But rest is vital. Tapering gives your legs a chance to recover so you’re fresh on race day.
3. Race Day Tips: What to Expect
Your first marathon will be an emotional rollercoaster – in the best way. Here’s how to prepare so you can enjoy the ride:
Pack your kit bag the night before
I’ve put together a full marathon race day packing list here to help you feel super prepared. From anti-chafe balm to your favourite snacks, having the right kit makes all the difference.
Add your name to your top
Seriously, do it. Iron-on letters or a marker will do the trick. Crowd support is magic, and hearing strangers cheer youon can give you such a lift.
Nothing new on race day
This is the golden rule. Stick with the shoes, food, kit and fuelling you’ve used in training. Race day is not the time to experiment.
Soak up the experience
You only run your first marathon once. Break the distance into chunks (10k, halfway, 20 miles, final push) and celebrate each milestone. Smile for the photographers. High-five the crowd. You’ve earned every step.
4. After the Finish Line: Recovery and Reflection
You did it! Whether you sprinted or shuffled across the finish line, you are officially a marathoner. Now, let’s look after that amazing body of yours.
Prioritise recovery
Rest, hydrate, and keep moving gently with short walks or easy stretching. Your legs will thank you. Check out my post-marathon recovery routine if you’re not sure where to start.
Celebrate your achievement
Take all the selfies. Wear your medal everywhere. Talk about your race to anyone who’ll listen. You earned this moment – soak it up.
Reflect while it’s fresh
Write down what worked, what didn’t, and how you felt throughout the race. Even if you don’t plan to run another marathon (yet), it’s helpful for future you.
5. You’ve Got This
Training for your first marathon is about more than running. It’s about showing up, even when it’s hard. It’s about proving to yourself that you can do hard things. And it’s about the small wins – the early mornings, the runs in the rain, the quiet belief that you’re getting stronger every week.
I hope these marathon tips for beginners have helped you feel more confident, prepared and excited. You’re not just running a marathon, you’re creating a memory that’ll stay with you forever.
Ready to get started?
Check out my beginner marathon training recommendations here
or browse more of my beginner running guides for advice, inspiration and gear tips.
See you at the start line
