If you’re interested in running a marathon, there are a few important things you need to remember during the training process and race preparation. Marathon running is an endurance sport that requires time, careful planning, mental dedication, and consistent physical conditioning. Whether you are stepping up from half marathons or preparing for your very first 42.195-kilometre race across New Zealand, understanding the exact distance and the factors that influence your performance is essential. Here are the core details, pacing formulas, and training strategies you should remember to help you cross that finish line!
There are many variables that influence how slow or fast you can complete a marathon. Every runner experiences race day differently based on preparation, environmental conditions, and pacing strategy.
The amount, type, and quality of training play a crucial role in determining your overall marathon performance. Consistent and well-structured training programs that incorporate long aerobic runs, speed workouts, tempo efforts, and adequate recovery periods help improve cardiovascular endurance, muscular strength, and running economy.
Proper nutrition and hydration before, during, and after the marathon are vital for optimal athletic performance. Adequate carbohydrate intake for fuel, balanced macronutrient distribution, and proactive electrolyte and hydration strategies play a significant role in sustaining energy levels, maintaining mental sharpness, and preventing debilitating fatigue during the latter stages of the race.
The specific characteristics of a marathon course—including its terrain, elevation profile, and local climate conditions—directly affect your finish time. Flat coastal courses with favourable, cool weather conditions are generally faster, while hilly routes or adverse wind and rain can significantly slow down runners.
Pace plays a crucial role in a marathon as it directly impacts your overall performance, energy expenditure, and race experience. Maintaining a consistent and appropriate pace helps runners effectively manage their energy stores, preventing early fatigue and enabling them to finish strong. By setting a realistic and well-controlled target pace, runners can optimize their endurance, avoid hitting the dreaded “wall,” and achieve their desired time goals.
Finding a sustainable marathon pace requires a combination of careful planning, honest self-assessment, and race experience. If you want to get more technical with your race strategy, you can use the official distance and your target time to calculate your optimal average pace.
A standard marathon is 26 miles and 385 yards, which equals precisely 42.195 kilometres.
Your target finish time is the total duration you aim to complete the race in, measured in hours, minutes, and seconds.
To calculate your average pace, first convert your desired finish time into total minutes. You can do this by multiplying the number of hours by 60 and then adding any remaining minutes. For example, if your desired finish time is 3 hours and 45 minutes, the calculation is: (3 hours × 60 minutes) + 45 minutes = 180 minutes + 45 minutes = 225 minutes.
Once you have your total time in minutes, divide it by the marathon distance to find your average speed.
Pace per mile: Divide 225 minutes by 26.2 miles, which equals approximately 8.59 minutes per mile (8 minutes and 35 seconds per mile).
Pace per kilometre: Divide 225 minutes by 42.195 kilometres, which equals approximately 5.34 minutes per kilometre (5 minutes and 20 seconds per kilometre).
By following these steps, you can calculate your average target pace based on your goal finish time. Remember that this is an average pace, and it is entirely normal for runners to vary their speed slightly during different sections of the race or in response to hills, wind, and aid stations.
Many runners feel as though the length of a marathon seems arbitrary, but there is a fascinating historical background behind the exact distance.
The history of the marathon’s length can be traced back to ancient Greece. The modern marathon race itself takes its origins from the legend of Pheidippides, a Greek messenger who is said to have run from the battlefield of Marathon to Athens to deliver news of the Greek victory over the Persians in 490 BC. According to ancient accounts, Pheidippides ran approximately 25 miles (40 kilometres) from Marathon to Athens to deliver his famous message before collapsing and passing away from exhaustion.
The modern marathon distance of 26.2 miles (42.195 kilometres) was not officially standardized until the early 20th century. The first modern Olympic Games, held in Athens in 1896, featured a marathon race that covered approximately 24.85 miles (40 kilometres), chosen specifically to mimic the legendary run of Pheidippides.
However, during the 1908 London Olympics, the marathon course was extended to 26.2 miles so that the race could start conveniently at Windsor Castle and finish directly in front of the royal box at the White City Stadium. This unique distance captured public imagination and was officially recognized as the standard marathon length by the International Association of Athletics Federations (IAAF, now World Athletics) in 1921. Today, the 26.2-mile distance is celebrated by millions of runners in events across the globe.
Training is of paramount importance when preparing for a marathon. It is through structured preparation that runners build the necessary cardiovascular endurance, muscular strength, and mental resilience required to conquer the 42.195-kilometre distance safely. Consistent and progressive training allows runners to gradually increase their weekly mileage, improve heart health, and develop the specific muscle groups needed for sustained endurance running. Training also provides invaluable opportunities to practice pacing strategies, test nutrition gels, refine running technique, and establish a solid fitness base.
There are several popular marathon training plans developed by elite coaches and sports scientists that have been successfully used by runners of all ability levels. Here are three well-known training frameworks:
Hal Higdon’s Marathon Training Plans: Hal Higdon is a renowned running coach and author who has created multiple marathon training schedules catering to everyone from first-time finishers to advanced racers. His structured plans typically range from 12 to 18 weeks and incorporate easy aerobic runs, weekend long runs, tempo efforts, and gradual mileage buildups.
The 18/55 Plan by Advanced Marathoning: Developed by renowned coaches Pete Pfitzinger and Scott Douglas, this rigorous plan is designed for experienced runners aiming for a strong performance and personal record. It consists of 18 weeks of high-volume training peaking at 55 miles per week, featuring medium-long runs, long runs, VO2 max intervals, and recovery runs.
The FIRST (Furman Institute of Running and Scientific Training) Marathon Training Plan: This scientifically backed plan is designed for runners with limited weekly training time or those looking to minimize the risk of overuse injuries. The schedule focuses on three quality running workouts per week—a tempo run, an interval session, and a long run—with non-running days dedicated to cross-training such as cycling or swimming.
If it’s your first time running a marathon, following a structured training plan that gradually builds your endurance while minimizing injury risk is essential. Below is a sample 16-week marathon training plan tailored for beginner runners:
Run 3 to 4 times a week, including one long run on weekends to build aerobic stamina.
Start with shorter distances, such as 3 to 4 miles (5 to 6 kilometres), and gradually increase your long run distance by 1 to 2 miles (1.6 to 3.2 kilometres) each week.
Maintain a comfortable, conversational pace during these runs, focusing on building a consistent routine.
Incorporate strength training and low-impact cross-training activities like cycling or swimming 2 to 3 times a week to support overall fitness.
Transition to running 4 times a week, featuring two shorter runs, one weekly long run, and one speed or hill session.
Continue expanding your long run distance, aiming to reach a peak distance of 18 to 20 miles (29 to 32 kilometres) by week 12.
Incorporate hill repeats to improve leg power and running economy on varied terrain.
Adjust cross-training intensity as needed to ensure your legs remain fresh for key running sessions.
Continue running 3 to 4 times a week, maintaining your weekend long run progression.
Increase your weekly mileage gradually by about 10% each week to allow tendons and bones to adapt.
Include one day of speed work, such as interval training or tempo runs, to improve running efficiency and cardiovascular capacity.
Maintain consistent strength training and core stability routines to protect your joints.
Gradually decrease your weekly mileage over three weeks to allow for muscular recovery and peak physical freshness on race day.
Reduce the length of your weekend long runs, dropping them down safely with no runs exceeding 14 miles (22 kilometres) in the final taper fortnight.
Maintain a regular running schedule with short, controlled bursts of speed to keep your legs feeling sharp and responsive.
Prioritise rest, ensure you get quality sleep, and fine-tune your race-day nutrition and hydration strategy.
Visualize success and mentally prepare yourself for the unique challenges of race day.
Ultimately, there is no single perfect way to run a marathon. Every runner’s journey is unique, so adapt your training to what feels right for your body and lifestyle. Remember to listen to physical feedback, take scheduled rest days when fatigue sets in, and adjust your plan according to your personal progress. Consulting with a running coach or experienced marathon mentors can also provide invaluable guidance throughout your endurance journey.
A standard marathon covers exactly 26.2 miles, which translates to precisely 42.195 kilometres. This official distance was established during the 1908 London Olympic Games and adopted worldwide.
Most beginner marathon training plans span between 16 to 20 weeks. This timeframe provides an adequate window to safely build up weekly mileage, develop aerobic endurance, and reduce the risk of overuse injuries.
Across global marathons, the average finish time typically ranges between 4 hours and 30 minutes to 5 hours. However, finish times vary widely based on age, gender, fitness background, weather, and course elevation.
No, most beginner and intermediate training plans peak with a maximum long run of 18 to 20 miles (29 to 32 kilometres) roughly three to four weeks before race day. Running the full 42.2 km in training requires too much recovery time and increases injury risk.
The night before a marathon, focus on consuming easily digestible, carbohydrate-rich foods such as pasta, rice, white bread, or potatoes, accompanied by lean protein. Avoid high-fiber or very fatty foods that could cause digestive discomfort during the race.
“Hitting the wall” typically happens when your body depletes its stored glycogen. You can prevent or delay this by following a structured carbohydrate-loading plan before the race, pacing yourself conservatively during the first half, and consuming energy gels and electrolytes regularly every 30 to 45 minutes while running.