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April 2026
OCR Invictus Challenge Petrovaradinska tvrđava
04/04/2026
Petrovaradinska tvrđava
Almost sold out
June 2026
OCR Invictus Challenge Štrand
06/06/2026
Štrand
06/04/2026
July 2026
OCR Invictus Challenge Kopaonik
04/07/2026
Kopaonik
04/05/2026
October 2026
OCR Invictus Challenge Fruška gora
10/10/2026
Vrdnik
10/08/2026
Past events
October 2025
Vikend na Rtnju
25/10/2025
Rtanj
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OCR Invictus Challenge Fruška gora
11/10/2025
Registration closed
July 2025
OCR Invictus Challenge Kopaonik
05/07/2025
Registration closed
June 2025
OCR Invictus Challenge Štrand
07/06/2025
Registration closed
April 2025
OCR Invictus Challenge Petrovaradinska tvrđava
05/04/2025
Registration closed
October 2024
OCR Invictus Challenge Fruška gora 2024
12/10/2024
Registration closed
July 2024
OCR + Night trail Invictus Challenge Kopaonik 2024
06/07/2024
Registration closed
June 2024
OCR Invictus Challenge Štrand 2024
08/06/2024
Registration closed
March 2024
OCR Invictus Fortress Challenge 2024
16/03/2024
Registration closed
October 2023
OCR Fruška gora Challenge 2023
14/10/2023
Registration closed
July 2023
Kopaonik OCR Invictus Challenge 2023
08/07/2023
Registration closed
June 2023
OCR Štrand Challenge 2023
10/06/2023
Registration closed
March 2023
OCR Fortress Challenge 2023
18/03/2023
Registration closed
October 2022
OCR Fruška gora Challenge 2022
22/10/2022
Registration closed
June 2022
OCR Štrand Challenge 2022
11/06/2022
Registration closed
March 2022
OCR Fortress Challenge 2022
26/03/2022
Registration closed
October 2021
Invictus Challenge - Fruška gora 2021
16/10/2021
Registration closed
August 2021
1. Mamut OCR training by INVICTUS
01/08/2021
Registration closed
June 2021
Invictus Challenge - Štrand 2021
12/06/2021
Registration closed
October 2020
Invictus Challenge - Fruška gora 2020
18/10/2020
Registration closed
June 2020
Invictus Challenge - Štrand 2020
14/06/2020
Registration closed
November 2019
Invictus Challenge - Fruška gora
10/11/2019
Registration closed
