How many miles is 2.4 km

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Related Articles. Training Schedules for Running Races. How Far Is a 10k? Plus, the Perfect Training Plan for You. Maximum heart rate MHR is most accurately measured using a cardiac stress test, which involves measuring a person's heart function including heart rate at periodically increasing levels of exercise.

These tests typically range from ten to twenty minutes in duration, which can be inconvenient. As such, there are many estimates for MHR based on age, which is strongly correlated with heart rate, though there is little consensus regarding which formula should be used.

The most commonly cited formula for calculating MHR is:. Although it is the most commonly cited formula, and is often used to determine heart rate training zones, it does not have a reference to any standard deviation, and is not considered a good predictor of MHR by reputable health and fitness professionals.

Furthermore, MHRs vary significantly between individuals, even those with highly similar training and age within the same sport. Nevertheless, MHR determined using the above formula is often used to prescribe exercise training heart rate ranges, and can be beneficial as a reference. Refer to the figure below for further detail.

Aerobic and anaerobic exercise are often mentioned in the context of endurance training and running. These types of exercise mainly differ based on the duration and the intensity of muscular contractions and the manner in which energy is generated within the muscle. In solely aerobic exercise, there is sufficient oxygen for a person's muscles to produce all the necessary energy for the exercise. In contrast, in anaerobic exercise, the cardiovascular system cannot supply muscles with oxygen quickly enough, and muscles break down sugar to supply the necessary energy, resulting in excess of lactate a byproduct of glucose metabolism.

Excess lactate causes the burning sensation in muscles typical of anaerobic exercises and eventually makes the continuation of exercise not possible if excess lactate is not allowed sufficient time to be removed from the bloodstream. Note that although lactate is also produced in aerobic conditions, it is used almost as quickly as it is formed at low levels of exercise, and only trace amounts leak into the bloodstream from the muscles.

Understanding aerobic exercise is particularly important when training for a long-distance activity such as a marathon. Determining a pace that can be maintained while using energy primarily derived through aerobic means, referred to as an "aerobic threshold pace," helps maintain a balance between fat and carbohydrate utilization. This pace requires a relatively low level of intensity, and is usually maintainable for a few hours.

To use this Kilometers to miles calculator , simply type the value in any box at left or at right. It accepts fractional values. A kilometer abbreviation km , a unit of length, is a common measure of distance equal to meters and is equivalent to 0.

The international mile is precisely equal to 1. To calculate a kilometer value to the corresponding value in miles, just multiply the quantity in kilometers by 0. To calculate a mile value to the corresponding value in kilometers, just multiply the quantity in miles by 1.