Custom Distance Training Plans

Whether you’re aiming for your first 6k, tackling 15 miles, or pushing all the way to 100k, your goal is unique - and your training should be too. With the right plan, you’ll build endurance, strength, and the confidence to conquer any distance on your terms.

How to train for custom distances

Not every runner’s goal fits neatly into 5k, 10k, or marathon - and that’s the beauty of it. Maybe you’re stepping up from a standard race to try something in-between, setting yourself a personal challenge like 7 miles, or even gearing up for an ultra distance that goes far beyond the usual milestones. A custom distance plan gives you the freedom to define your own finish line.

Whatever your target, success still comes down to the same principles: structure, consistency, and steady progress. Running a few times each week builds endurance and rhythm, while a clear goal - whether it’s a race, a virtual challenge, or simply a personal milestone - keeps motivation high. Training with friends or sharing your journey with a community can also make it more enjoyable and keep you accountable.

The best way to tie everything together is with a structured plan. Runna creates a fully personalized program based on your chosen distance, fitness level, and schedule. With our support, you’ll stay consistent, stay motivated, and build the confidence to hit your unique goal - no matter the number on the start line.

Hi! You’ve set your sights on a custom distance, and we’ll get you there. Whether it’s your first time pushing beyond the usual markers or your boldest challenge yet, we’ve got you. Week by week, we’ll guide your training and make sure you smash your unique goal.
Ben Parker, Head coach

Why choose our custom distance training plans?

Your distance is unique - and we’ll give you everything you need to reach it.

Personalized plan

Your custom distance plan adapts to your fitness, schedule, and goals. Whatever challenge you choose, Runna builds a program around you and your lifestyle.

Guidance and support

Training for a 10k can feel like a big step up - but you’re never on your own. Our in-app articles explain everything from pacing to recovery, while our support team is available 24/7 to keep you on track.

Elite coaching

Our world-class coaches, including former Olympians, have helped runners of all levels hit their goals. With their expertise, you’ll train smarter, avoid setbacks and finish proud.

Tracking and insights

Track your runs, celebrate milestones, and watch your pace improve. Runna gives you clear feedback and insights so you can see your progress and smash your unique goal.

How to get started

From 6k to 100k, Runna takes care of the plan so you can focus on the running. We’ll guide you every step until you hit your goal.

Choose your plan

Pick the distance that matters to you - big or small - and we’ll create a plan that adapts to your fitness, lifestyle, and goals.

Download the app

Download the app, log in, and you’ll have your full training plan - complete with runs, tips, and guidance - at your fingertips.

Run, run, run!

Simply tap ‘Go’ and follow along. Every run is laid out clearly, so you always know exactly what to do.

Hit that goal

Stick with your plan and you’ll line up for your goal distance prepared to run strong, finish proud, and achieve your best.

Workouts explained

Your custom distance training plan includes a mix of sessions - each with a clear purpose. Here’s what they are and how they’ll help you on race day.

Easy Run

Easy runs are slower, conversational-paced runs. They build fitness while giving your body time to recover, so you’re fresh enough to get the most out of the harder sessions.

Hills

Hill reps are hard efforts run uphill with an easy jog or walk back down. They build leg strength, power, and running form - helping you stay efficient and strong.

A woman running down a dirt road in a park.

Interval sessions

Intervals are short, fast bursts with recovery in between. They improve your top-end speed and running economy, making your goal pace feel more sustainable.

A group of people standing around each other in a field.

Long run

Long runs are steady efforts at an easy pace, gradually building distance. They develop the endurance and efficiency you need to complete your goal distance with confidence.

Recovery run

Recovery runs are very short, very easy jogs after tough sessions. They help loosen muscles, improve circulation, and get your legs ready for the next key workout without strain.

Strides

Strides are short, fast bursts of running (10–20 seconds) that boost speed and running form. They sharpen leg turnover and form, leaving you feeling quicker and more efficient.

Tempo sessions

Tempo runs are sustained efforts at a “comfortably hard” pace. They build the speed endurance you need to hold a strong rhythm from start to finish of your distance.

Time trial

Time trials are your chance to put your training to the test - running a set distance at your strongest, most sustainable effort. They highlight how far you’ve come, build confidence, and give you the focus to push for even bigger gains.

A couple of women that are running in a race.

Tips for your custom distance training plan

These expert-backed tips will help you train smarter, avoid injury, and stay motivated. From pacing and recovery to gear and mindset, discover just a small snippet of all the tips, nutrition and coaching advice you'll have at your fingertips with a Runna training plan.

Nutrition

Training is only part of the equation - what you eat has a huge impact on how you feel and perform. The right fuel helps you recover faster, train consistently, and show up ready for whatever distance you’re tackling.

  • Keep protein high to repair muscles.
  • Adjust carbs to your distance: lighter for short runs, heavier for longer ones.
  • Test caffeine in training if you want an extra boost in focus or endurance.

Base your meals on whole, nutrient-rich foods like oats, quinoa, sweet potatoes, fruit, veg, lean proteins, and healthy fats. These support steady energy and recovery, while limiting excess sugar helps you avoid spikes and crashes. Match portion sizes to the mileage and intensity of your plan.

Fueling for your big run
Whether it’s race day or a personal challenge, keep things simple and familiar:

  • Eat a carb-rich meal 2-4 hours before your run.
  • Avoid heavy fats, protein, or fiber too close to running.
  • Stick with foods you’ve already practiced with in training - no surprises when it matters.

Remember: Think of nutrition as distance-specific. A 6k personal challenge and a 60k ultra require very different fueling strategies - but both need practice and consistency. Use your training block to test what works for your body, so on race day (or challenge day), nothing is left to chance.

Cross-training and strength training

Adding cross-training and strength training to your custom distance plan helps you do two things: stay injury-free and perform at your best, no matter the distance you’re targeting.

Cross-training is any activity that builds fitness without the repetitive impact of running. Cycling, swimming, rowing, or using the elliptical are excellent options. They keep your aerobic engine strong while giving your legs a break - especially valuable if you’re training for longer distances or want to keep variety in your week. Picking something you enjoy makes it easier to stay consistent over time.

Strength training is one of the most effective ways to build durability and efficiency across all distances. Stronger muscles absorb impact better and reduce your risk of overuse injuries. Plus, improving muscle strength can boost your running economy by 8–12%, helping you run further and faster with less effort. Focus on calves, quads, glutes, hamstrings, and core - the key muscle groups that carry you through every stride.

Even 1–2 short strength sessions per week can make a huge difference. With Runna, you can add a personalized strength plan alongside your custom distance training, tailored to your schedule, equipment, and level.

Pacing

A smart pacing strategy is key to running your best at any distance. Start too fast and you risk burning out; go too cautious and you might leave performance on the table.

  • Set your goal: Base it on your recent training or race times. Work out your target pace for the distance you’re tackling and practice it in training so it feels natural.
  • Early stages: Hold back slightly and find your rhythm. Adrenaline often makes the first mile or two feel easier than it is - save energy for later.
  • Middle miles: Settle into your goal pace and stay consistent. Focus on controlled breathing and smooth effort, avoiding unnecessary surges.
  • Final stretch: Increase your effort if you’ve got fuel left. For shorter distances this may be the last kilometer, for longer ones it could be the final few miles. Empty the tank when it matters most.

Tip: Adjust pacing for the terrain and distance - flatter courses suit even pacing, while hilly or ultra distances may require more flexibility.

Form

Your running form is important for a few reasons. Running efficiently will:

  • Protect your body from impact with the ground, especially over longer distances.
  • Reduce the energy cost of running so you can sustain pace for your full distance.
  • Lower your risk of injury, particularly as mileage and fatigue build.

Running form matters at every distance, whether it’s a short challenge or an ultra. Good mechanics help you stay efficient, strong, and consistent when it counts.

  • Run tall with relaxed shoulders.
  • Keep strides smooth and efficient, avoiding overstriding.
  • Drive arms back to create forward momentum.
  • Stay relaxed through your face, hands, and jaw.

Work on form throughout training so it becomes second nature. Pay extra attention in the later miles of long runs or tough workouts, when fatigue makes posture harder to hold.

Form develops over time, so changes may feel unfamiliar at first. Be patient, focus on small improvements, and you’ll find they add up to smoother, more efficient running at any distance.

Recovery

Training only works if your body has time to adapt. Recovery is what keeps you consistent, strong, and injury-free over the full training block.

Here are the key things to focus on:

  • Sleep: Aim for 7–9 hours each night. This is when your body repairs tissues, adapts to training load, and builds strength.
  • Mobility work: Add yoga, Pilates, or stretching into your week to improve flexibility and ease stiffness from higher mileage or harder sessions.
  • Massage and tools: Use a foam roller, massage gun, or the occasional sports massage to relieve tight muscles and boost recovery.
  • Nutrition and hydration: Refuel after runs with carbs and protein to replenish glycogen and repair muscles. Stay hydrated to support joints, energy, and recovery.
  • Active recovery: Gentle movement - like walking, cycling, or swimming - improves circulation and loosens sore muscles without extra strain.
  • Flexibility: Listen to your body. If fatigue or soreness lingers, swap or skip a session. Rest is part of training, and pushing through can set you back.

After completing your goal distance - whether it’s 6k or 100k - give yourself time to recover fully before building back into harder training.

Gear

The gear you use in training and on event day makes a big difference to comfort, performance, and consistency. Here’s what to keep in mind for your custom distance:

  • Shoes: Choose a pair that matches your stride and the distance you’re tackling. For shorter challenges, lightweight trainers can help with speed. For longer distances, more cushioned, supportive shoes may keep you comfortable over the miles. Always test them in training before your big effort.
  • Clothing: Opt for technical fabrics (polyester or nylon blends) that wick sweat and minimize chafing. For longer distances, consider kit that layers well and is tested for comfort over time.
  • Running watch or GPS tracker: Tracking pace and distance helps you stay on target, whether it’s a 6k or a long ultra. Runna integrates with Garmin, Apple Watch, Coros, and Strava so your runs and progress sync automatically.
  • Accessories: Match your gear to your distance. A lightweight belt or armband is fine for shorter runs, while hydration vests, bottles, or energy gels may be essential for longer events.
  • Sun protection: High-SPF sunscreen, a cap, or sunglasses will protect you in all conditions - even on cloudy days, UV exposure builds up during long runs.

Golden rule: practice with all your kit in training. Never try new shoes, clothing, or fueling gear on your event or challenge day.

As featured in

Stories from Runnas

01/05
My first marathon and second ever running race. Sub 3 hour was my goal, but thanks to Runna managed to run a 02:41:49!
Dan C
San Sebastián Marathon
User @danrconnell finishing a race with a medal.
02/05
I’m 45 and only started running 12 weeks ago when I downloaded the Runna app.

Just finished my first half marathon - my goal was just to finish it before the 3hr cutoff but I made it in 2 hours 30 mins.
Somaclay
Sunshine Coast Half Marathon
User @somaclay finishing a race with a medal.
03/05
Completed my first ever marathon. I had never run more than 5km before the start of this year.

Through training with Runna since January, I’m so proud to say I’ve completed a marathon in 3hr37min
Sathi
Richmond Run-fest Marathon
User @sathi6 finishing a race with a medal.
04/05
From struggling to run 5km to running our first half marathon within 6 months of training using Runna! Loved every second of it.
Sara C
Belfast Half Marathon
User @saramcclements finishing a race with a medal.
05/05
Trained with Runna for 16 weeks to complete my first 250km ultramarathon in Tanzania in 37 hours
Henry G
Ultra X Tanzania 250
User @henry_galligan finishing a race with a medal.

FAQ: All you need to know about running your custom distance

How do I choose the right plan for me?

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To what extent can I customise my training plan?

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Can I build more than one plan?

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