| Konstantinos Gelaouzos | |
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| Nickname: | Gkela |
| Nationality: | Greek |
| Birth Date: | 1990 11, df=yes |
| Birth Place: | Amfissa, Phocis |
| Sport: | Long-distance running |
| Event: | 1500 metres, 3000 metres, 5000 metres, 10,000 metres, half marathon, marathon |
| Club: | Panathinaikos |
| Updated: | September 2022 |
Konstantinos Gelaouzos is a Greek long-distance runner. He was born on 21 November 1990 in Amfissa and resides in Athens. His personal best in the Marathon run (2:14:15) places him in the fifth place among all time Greek Marathon runners.
On 14 November 2021, with a time of 2:16:49 during the 2021 Athens Classic Marathon, he set the record for the fastest Greek runner of all time that has run the classic route.[1]
Gelaouzos was punished by the National Anti-Doping Organization (EOCAN) with a four-year ban, effective from December 1, 2022 to November 30, 2026, for using the banned substance erythropoietin 4 years ineligibility.
| 2016 | European Championships | Amsterdam, Netherlands | 61st | Half marathon | 1:08:09 | |
| 2017 | European Team Championships | Lille, France | 9th | 5000 m | 14:22.41 PB | |
| Athens Classic Marathon | Athens, Greece | 8th | Marathon | 2:27:21 | ||
| 2018 | Mediterranean Games | Tarragona, Spain | 15th | Half marathon | 1:13:12 | |
| European Championships | Berlin, Germany | 44th | Marathon | 2:22:24 | ||
| Athens Classic Marathon | Athens, Greece | 7th | Marathon | 2:21:54 PB[2] | ||
| 2019 | Athens Classic Marathon | Athens, Greece | 3rd | Marathon | 2:19.02[3] | |
| 2021 | Athens Classic Marathon | Athens, Greece | bgcolor=gold | 1st | Marathon | 2:16:49 |