By Tracy McBeth Writer
Key takeaways
- A strong reason for running can help you stay motivated when training gets tough.
- Breaking big goals into smaller milestones can make marathon training feel more manageable.
- Recovery, self-compassion and support from others are just as important as the kilometres you run.
When you sign up for a marathon or a half-marathon, it’s natural to focus on the physical demands. But completing a 12-week training program takes more than strong legs and cardiovascular fitness. It also takes a strong mind.
So, how do you build and maintain mental fitness?
1. Have a strong why
A clear reason for training can make all the difference when motivation dips and mental fatigue sets in.
Coming back to that purpose can help you push through when times are tough.
“Research shows that those with a strong ‘why’ tend to experience greater enjoyment and better psychological health,” says Barry Sierra, Psychologist at Bupa Mindplace.
Your “why” doesn’t need to be big or dramatic. It might be wanting to feel stronger, improve your health, clear your head, or simply prove to yourself that you can stick with it.
2. Break your goal into smaller milestones
Marathon training can feel daunting. But, setting smaller milestones can help reduce anxiety, says Beth Israelson, an Exercise Physiologist at Bupa Mindplace.
“Break down your training program into smaller, more manageable sections and try not to look too far ahead.”
Focus on your training week by week, or blocks of 2-4 weeks at a time.
Set short-term goals and review them regularly. For example, you might aim to run 4 times a week for the first few weeks before increasing your sessions.
Keep your goals realistic. You might ask yourself
- Is the goal specific to my ability?
- Is it measurable?
- Is it achievable?
- How will I know when I’ve achieved it?
- What is my timeframe?
3. Be flexible
Training rarely goes perfectly. You might miss a run, feel fatigued or struggle through a workout that’s normally manageable, and that’s ok.
“Rather than dwelling on one disappointing or missed session, try to view your training as a whole,” says Beth. “Missing or changing one or 2 sessions doesn't undo weeks of hard work.”
If life gets in the way of training, try:
- Swapping training days around
- Prioritising key workouts
- Adding a short, gentle recovery run onto a longer run
- Extending the following week's running distance
- Use the missed session as an extra recovery day
4. Build a support network
Long runs can sometimes feel lonely, but training with others can make them more enjoyable.
“Group training is good for increasing accountability and building motivation,” says Beth.
Chatting to others about the commitment that’s been made and what’s already been achieved provides positive reinforcement and helps you to consistently commit to the training.
5. Make recovery a priority
Mental fitness depends on recovery just as much as physical fitness does says Barry.
“Mental burnout often precedes physical burnout, so noticing the signs early and prioritising recovery can reduce the risk of injury and mental fatigue.”
Focus on mental recovery by:
- Trying a mix of fun physical activities that are separate from training
- Spending time socially with friends and family
- Fuelling your body with a balanced and nutritious diet, incorporating carbohydrates for energy and protein for muscle repair
- Sleeping at least seven hours a night
- Staying hydrated. Aim to drink 8 glasses of water a day
- Keeping training enjoyable by mixing things up
6. Be kind to yourself
High performing athletes use realistic self-talk to guide, motivate and reframe challenging thoughts and experiences.
When negative whispers creep in, chase them away. For example:
- Instead of “I can't do this", try "This is tough, but I'm getting stronger”
- Instead of "I missed a run, I've failed", try "One missed run won't undo my progress.”
- Instead of "I'm too slow", try "Every kilometre builds fitness."
- Instead of "I should push through the pain", try "I need to listen to my body and rest."
- Instead of "everyone else is training more", try "This is my personal journey.”
7. Celebrate your progress
“Take time to recognise milestones along the way, whether that's completing your longest run yet or recovering well,” says Beth.
“Acknowledging progress can help build confidence and reinforce positive habits.”
Celebrate your progress by:
- Booking a massage
- Enjoying a meal out
- Treating yourself to some new running gear
- Physically tick off each completed training session on a calendar
- Take a day trip after completing a major milestone
- Rewarding yourself with a recovery experience like a float tank, sauna or yoga class
8. Know when to seek support
Training for a marathon can be physically and mentally demanding.
If you're struggling with motivation, feeling overwhelmed or finding training is affecting your wellbeing, consider reaching out to a coach, healthcare professional, training partner or trusted friend.
Support can make a significant difference and help keep your training experience positive.

Need extra support? Mindplace can help
Tracy McBeth Writer
Tracy is a journalist with a passion for promoting good health, both mentally and physically.
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