|29/09/2019||BMW Berlin Marathon||Berlin (Germany)|
|03/11/2019||TCS New York City Marathon||New York (United States)|
|29/03/2020||Rome Marathon||Roma (Italy)|
|05/04/2020||Paris Marathon||Paris (France)|
|19/04/2020||Vienna City Marathon||Vienna (Austria)|
|26/04/2020||Virgin Money London Marathon||London (United Kingdom)|
|06/07/2020||Badwater||Death Valley, CA (United States)|
|17/07/2020||Hardrock 100 Endurance Run||Silverton, CO (United States)|
|Competitions by area|
The half-marathon is a popular event popular with experienced amateur athletes. From a distance large enough to be a challenge, it does not require as serious and thorough preparation as a marathon: muscle fatigue is a lesser problem over 21,097 km and the "30th kilometre wall" caused by the depletion of the glycogen stock does not occur.
For amateurs, the half-marathon runs well below the maximum aerobic speed and below the anaerobic threshold, resulting in no shortness of breath and a low accumulation of lactic acid in the muscles as it happens on shorter distances (cross-country).