So, you’ve signed up for your first marathon? Amazing! Whether it’s been a long-term dream or a spontaneous decision (we’ve all had those moments!), I’m genuinely so excited for you. Taking on 26.2 miles is no small thing, but with the right mindset, training plan, and a few personal tips from someone who’s run 15+ marathons, I promise it’s totally achievable.
In this post, I’m sharing my go-to tips for first-time marathon runners – from choosing the right plan to getting through race day with a smile on your face. Let’s make your first marathon experience one to remember!
Start with a Marathon Training Plan that actually works for you
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.
Pick the right plan for your fitness level
Are you completely new to running or already comfortable running 10k or even a half marathon? Tailor your plan to where you’re starting from. Most beginner marathon training plans are around 16 weeks long, but if you’ve got a solid running base, 12 weeks could be enough. I personally love using Runna for training plans – especially for beginners. Their app adjusts to your fitness level, and you can use my discount code RWR2 for a free trial.
Be consistent
Try to run at least 3-5 times a week, depending on your schedule and how your body feels. Getting into a routine will make a huge difference, especially on those tougher weeks. Planning your long runs for the same day as your actual marathon (usually Sunday) helps build a rhythm too.
Need motivation?
Long runs can be mentally tough—especially when the weather’s grim or life feels busy. I wrote this post on how to stay motivated while training that might help give you a boost when you need it most.
My best marathon training tips for first-timers
Training for your first marathon isn’t just about building fitness – it’s also about building confidence. Here are a few essential tips that I wish I’d known before my first 26.2:
Slow and steady wins the race
Your long runs should be slow and steady. If you can’t hold a conversation while running, ease off the pace. These runs aren’t about speed – they’re about time on your feet and building endurance.
Test your nutrition strategy
Your training is the perfect time to figure out what your body likes (and doesn’t!). Try different breakfasts, hydration drinks, and energy gels. Everyone is different, and trust me—the middle of a marathon is not the time to discover a gel makes your stomach unhappy!
Don’t worry if you haven’t run 26.2 miles before race day
Most training plans top out around 20–22 miles. That’s totally normal. You don’t need to “practice” the full marathon distance in training – your race day adrenaline (and proper tapering) will carry you through.
Train in your race day kit
Don’t save your shiny new leggings or top for race day. Run in them at least a few times beforehand to make sure they’re comfortable and chafe-free. I’ve rounded up some of my favourite running gear for women here if you’re on the lookout for tried-and-tested kit.
Respect the taper!
The final two weeks of your plan will reduce your mileage, and it can feel weird going from long, intense runs to short and easy jogs. But tapering is essential. Your legs need to recover and be fresh for race day. Again, plans like Runna do this brilliantly.
Race Day: What to expect and how to prepare
Race day will be a rollercoaster of emotions, and that’s all part of the magic. Here are my tips to make sure the day runs smoothly (pun intended):
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.
Dress smart—and add your name to your shirt!
Wearing kit you’ve trained in is non-negotiable. Also, add your name to your top (iron on letters or even just permanent marker!) – you’ll be amazed how much a “Go on Rachel!” from a stranger can lift you at mile 20.
No new gear, no new food, no new anything
Seriously – this is the golden rule. Stick to what you’ve practiced with. Race day isn’t the time to experiment with new shoes, socks, or breakfast ideas.
Smile and soak it up
You only run your first marathon once. Break the distance down into chunks (10k, halfway, 20 miles, final push), smile for the photographers, and take in the atmosphere. Whether you’re in London, Manchester, Yorkshire, or a local event, the crowd will carry you through.
After the finish line: Recovery time
You did it! You crossed the finish line, and now it’s time to recover like a pro.
Take it easy
Give your body time to rest. Walk, stretch, and hydrate. I’ve shared my post-marathon recovery routine here if you’re not sure what to do in those first few days.
Celebrate the moment
Take ALL the photos. Wear your medal with pride. You just did something incredible – whether you ran it in 3 hours or 6. Every mile counts.
Reflect and regroup
Jot down your experience while it’s still fresh – what worked, what didn’t, and how you felt throughout the race. If you decide to sign up for another (and I bet you will!), you’ll thank yourself later.
Finally: You’ve got this
Training for your first marathon is a journey that challenges your body, your mind, and at times your patience – but it’s also one of the most empowering things you’ll ever do.
Stick to your plan, listen to your body, and trust the process. Whether you’re running to raise money, achieve a lifelong goal, or just to prove to yourself that you can, every step matters.
I hope these marathon training tips for first-timers have helped you feel more prepared and excited. You’re not just running a marathon – you’re creating memories 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.
You’ve got this 💪
