Preparing for a duathlon requires a balanced approach to training, focusing on both running and cycling disciplines. With DB Max's upcoming Draft-Legal 'Chilly' Duathlon on 16th March 2025 at Castle Combe, now is the perfect time to start your training journey.
Understanding the Duathlon Format
A standard duathlon consists of three segments: a run, followed by a bike ride, and concluding with another run. For the 'Chilly' Duathlon, the distances are:
- First Run: 5 km
- Bike: 20.5 km (7 laps)
- Second Run: 3 km
Training Tips for Duathlon Success
Duathlons require a well-rounded training approach to prepare your body for the unique demands of running, cycling, and quick transitions. Here's a deeper dive into each aspect of your training:
1. Structured Training Plan
Build-Up Period: Spend the first 4–6 weeks building your endurance and technique for both running and cycling. Focus on steady-state workouts and avoid pushing too hard early on to prevent burnout.
Taper Period: In the final 1–2 weeks before the event, reduce training volume but maintain intensity. This allows your body to recover and peak on race day.

2. Diverse Running Workouts
Endurance Runs: Run at a conversational pace for 45–90 minutes once a week. These runs build your aerobic base and stamina for race day.
Tempo Runs: Run at a comfortably hard pace (about 80–90% of your max effort) for 20–30 minutes. This trains your body to sustain a faster pace during the first and second run segments.
Speed Intervals: Incorporate 4–8 rounds of 400–800 meters at a near-sprint pace, with equal recovery time between efforts. This improves your running economy and prepares you for a strong finish.
3. Cycling Focus
Endurance Rides: Ride for 60–120 minutes at a moderate pace. These sessions are crucial for improving aerobic fitness and simulating race conditions.
Hill Repeats: Find a hill and perform 6–8 repeats, cycling up at high effort and recovering on the way down. If you’re training indoors, use high resistance to mimic hill climbing.
Interval Training: Alternate between 3–5 minutes of hard effort and 2–3 minutes of easy pedalling. This boosts your ability to recover quickly and handle race surges.
Cadence Practice: Aim for a cadence of 80–100 RPM during steady rides. Practicing smooth, efficient pedalling will make you more economical on race day.
4. Brick Workouts (Combined Training)
These sessions are the cornerstone of duathlon training, teaching your body to transition seamlessly between disciplines.
- Sample Beginner Brick: 1 km run + 10-minute bike + 1 km run. Repeat 2–4 times.
- Sample Advanced Brick: 3 km run + 20-minute bike + 3 km run. Repeat 2–3 times.
Focus on reducing your transition time. Set up your bike and shoes as you would on race day.

5. Rest and Recovery
Active Recovery Days: Include low-intensity activities like yoga, swimming, or easy cycling to promote blood flow and muscle repair.
Massage and Stretching: Use foam rollers or get sports massages to release tight muscles. Stretch major muscle groups after workouts, focusing on hamstrings, calves, quads, and hip flexors.
Sleep: Aim for 7–9 hours of quality sleep per night to optimize recovery.
6. Race-Specific Preparation
Transition Practice: Set up a small area to mimic the transition zone. Practice dismounting your bike, swapping shoes, and heading out on the run. Aim to get faster and smoother with each practice.
Nutrition Strategy:
- Before: Eat a balanced meal with carbs, protein, and minimal fat 2–3 hours before training or racing.
- During: For races over 90 minutes, consume energy gels or sports drinks every 30–45 minutes.
- After: Refuel with a 3:1 ratio of carbs to protein within 30 minutes of finishing.
Clothing and Gear: Wear your planned race-day attire during training to ensure comfort. Check your bike for any mechanical issues and practice riding with your chosen water bottle setup.

7. Mental Preparation
- Visualisation: Spend 5–10 minutes a few times a week imagining yourself executing each part of the race successfully, from the start to the finish line.
- Practice Positive Affirmations: Use statements like, “I am strong, fast, and ready,” to build confidence.
- Race Simulations: Incorporate mock races into your training to mentally prepare for the intensity of race day.
By following these expanded tips, you'll be well-prepared to tackle the DB Max Draft-Legal 'Chilly' Duathlon and have a fantastic experience!
Additional Resources
For a visual guide on duathlon training and preparation, consider watching the following video:
Join the Community
Participating in the 'Chilly' Duathlon not only offers a personal challenge but also the opportunity to join a vibrant community of athletes. Whether you're aiming to qualify for the GB Age-Group World Championships or seeking a new fitness goal, this event caters to all levels.
Registration Details
Secure your spot for the Draft-Legal 'Chilly' Duathlon on 16th March 2025 at Castle Combe Circuit. Early bird offers are available until midnight on 1st March 2025. Don't miss out on this exciting event!
For more information and to register, visit DB Max's official event page:
Embark on your duathlon journey today and experience the thrill of multisport racing with DB Max!