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Cross training is not about doing more for the sake of it. It is about maintaining or improving aerobic fitness while reducing mechanical load on the body through low impact workouts.
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Running has never been more popular. In recent years, more people than ever have taken it up, whether for fitness, mental health or community. While that growth is exciting, it has also come with a noticeable rise in running-related injuries, many of which are preventable (Kakouris et al., 2021).
Running is simple to start, but it places significant demands on the body. Each stride exposes your muscles, tendons, ligaments and bones to repetitive forces that can exceed two to three times bodyweight. When runners build fitness without understanding how load works, or how long tissues take to adapt, those forces can accumulate faster than the body can handle. This is where cross training becomes one of the most valuable tools a runner can use for injury prevention training.
Why runners pick up injuries early
One of the biggest challenges for new runners is that cardiovascular fitness improves faster than structural strength. Your heart and lungs adapt relatively quickly, which can make it feel like you’re ready to run further or faster within a short period of time as a part of a beginner running training plan. Tendons, ligaments and bone, however, take much longer to adapt (Yamamoto et al., 2008).
This mismatch often leads to familiar patterns. Runners push the pace on easy days, increase weekly kilometres too quickly, or stack hard sessions without adequate recovery. Most injuries don’t come from one moment, but from repeated overload. They often begin as small niggles that are easy to ignore, until they become more limiting. Conditions such as Achilles tendinopathy, ITB pain, patellofemoral pain and bone stress injuries are all examples of tissues being asked to do more than they are prepared for (Fredericson & Moore, 2005; Kakouris et al., 2021).
What is cross training?
Cross training is not about doing more for the sake of it. It is about maintaining or improving aerobic fitness while reducing mechanical load on the body through low impact workouts.
When used well, cross training allows runners to build cardiovascular capacity without impact, maintain fitness during higher-volume periods, reduce stress on joints and tendons, and recover more effectively between key sessions. It is important to note that cross training should support your running, not compete with it. If a session leaves you too fatigued to run well the next day, it is likely missing the point.
Why cross training works
Aerobic fitness is not exclusive to running. Activities such as cycling, swimming and rowing can all improve cardiovascular capacity while placing significantly less stress on the body (Millet et al., 2002). Research shows that endurance performance can be maintained, and sometimes improved, through non-impact training when it is programmed effectively (Yamamoto et al., 2008).
For runners, this creates flexibility. You can replace some easy runs with cross training, maintain volume while managing niggles, and stay consistent even when impact needs to be reduced. Consistency, rather than distance alone, is one of the strongest drivers of long-term performance.
A coach’s perspective: what triathletes get right
As a running coach, ultra runner and former triathlete, one consistent observation is how durable triathletes tend to be. While they still experience fatigue, they often present with fewer classic overuse injuries compared to runners who only run.
This is largely due to how their training is structured. Swimming, cycling and running distribute load across different tissues, allowing athletes to build a large aerobic base without constant impact. This reduces repetitive strain while still supporting high training volumes (Millet et al., 2002). Runners don’t need to become triathletes to benefit, but the principle is worth applying.
Swimming: an underrated tool
Swimming is one of the most effective cross-training options available to runners. It is completely non-impact, challenges the cardiovascular system, and introduces a different breathing pattern that can support overall aerobic development.
Regular swimming can help maintain fitness without stressing joints, encourage more controlled breathing, and support upper-body strength and posture. It also works well as a recovery session, as the combination of gentle movement and water pressure can help reduce stiffness after harder runs (Fredericson & Moore, 2005).
Other effective options
Cross training does not need to be complicated. Cycling provides a strong aerobic stimulus with minimal impact, while rowing offers a full-body workout with controlled loading. Elliptical machines replicate a running-like movement pattern with reduced stress, and hiking or walking can build aerobic fitness while supporting strength and recovery.
The key is choosing the right modality and matching the intensity to the purpose of the day, so that cross training complements your running rather than interfering with it.
How to use cross training in your week
Cross training is most effective when it replaces some running, rather than being added on top of it. It can be used to swap out easy runs, sit between harder sessions, reduce impact during high-distance phases, or support recovery for runners who are injury-prone or returning from a setback using a weekly workout plan.
A well-balanced training week distributes stress intelligently, allowing for adaptation without overload. This approach has been consistently linked to better performance and lower injury risk over time (Seiler & Tønnessen, 2009).
Final word: train for longevity, not just distance
Running rewards consistency over time. Cross training allows you to build fitness while protecting your body, helping you stay healthy enough to keep improving. The strongest runners are not always the ones who run the most, but the ones who can train consistently without interruption (Kakouris et al., 2021).
Train smart, manage your load, and use cross training as a tool to support long-term progress.
A woman cross training in the gym shows how it builds strength and helps runners stay healthy and keep improving
Disclaimer
The information provided in this article is of a general nature only and is not intended to replace professional medical, health, or fitness advice. It does not take into account your individual objectives, physical condition, medical history, or needs. Before acting on any of the guidance or recommendations provided, you should consider whether it is appropriate for you in light of your personal circumstances. You should always seek the advice of a qualified healthcare professional (such as a physiotherapist, podiatrist, dietitian, or medical doctor) before starting, changing, or relying on any exercise, training, or nutrition program. Rebel Sport accepts no liability for any loss, injury, or damage suffered by any person relying on the information provided.
References
- Fredericson, M., & Moore, T. (2005). Muscular balance, core stability, and injury prevention for middle- and long-distance runners. Physical Medicine and Rehabilitation Clinics of North America, 16(3), 669–689. https://doi.org/10.1016/j.pmr.2005.03.001
- Kakouris, N., Yener, N., & Fong, D. T.-P. (2021). A systematic review of running-related musculoskeletal injuries in runners. Journal of Sport and Health Science, 10(5), 513–522. https://doi.org/10.1016/j.jshs.2021.04.001
- Millet, G. P., Candau, R., Barbier, B., Busso, T., Rouillon, J. D., & Chatard, J. C. (2002). Modelling the transfers of training effects on performance in elite triathletes. International Journal of Sports Medicine, 23(1), 55–63. https://doi.org/10.1055/s-2002-19272
- Seiler, S., & Tønnessen, E. (2009). Intervals, thresholds, and the long slow distance: The role of intensity and duration in endurance training. Sportscience, 13, 32–53.
- Yamamoto, L. M., Lopez, R. M., Klau, J. F., Casa, D. J., Kraemer, W. J., & Maresh, C. M. (2008). The effects of resistance training on endurance distance running performance among highly trained runners: A systematic review. Journal of Strength and Conditioning Research, 22(6), 2036–2044. https://doi.org/10.1519/JSC.0b013e318185f2f0
