Cyber ApocalypseHack The Box – Cyber Apocalypse CTF
Free registration opens · Jun 12 – Jul 24, 2026
2026–2030 calendar
Competition calendar
Tech competitions highlighted (⚡), science olympiads, hackathons and more. Filter by age and click an event for details.
⚡ Upcoming tech dates
48h HackathonsMLH GHWOnline hackathon weekNov 6–12, 2026happening now</> ProgrammingBebrasWorld-Wide Bebras Week of computational thinkingNov 9–13, 2026happening now🔐 CybersecurityCSAWCSAW Cybersecurity Games Global FinalsNov 12–14, 2026in 2 days48h HackathonsJunctionHackathon (48 h)Nov 13–15, 2026in 3 days
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Long registration periods appear only on the days they open and close.
This month's competitions
July 2026
9 dates
IPhOInternational Physics Olympiad
Competition · Jul 4–12, 2026
IChOInternational Chemistry Olympiad
Competition · Jul 10–19, 2026
IMOInternational Mathematical Olympiad
Competition · Jul 10–21, 2026
IBOInternational Biology Olympiad
Competition · Jul 12–19, 2026
SIMOCSingapore International Math Olympiad Challenge (SIMOC)
SIMOC In-Person International Grand Finals · Jul 17–22, 2026
Cyber ApocalypseHack The Box – Cyber Apocalypse CTF
Hack The Box Cyber Apocalypse online competition · Jul 24–29, 2026
IOLInternational Linguistics Olympiad
Competition · Jul 26 – Aug 2, 2026
IMCInternational Mathematics Competition for University Students
Competition · Jul 27 – Aug 3, 2026
Confirmed: official days · Month announced: days to be confirmed · Estimate: the month it is usually held, not announced yet · No forecast: date unknown.
Dates checked on the organizers' official websites and calendars (last review on November 6, 2026). They may change: always confirm on the official website before registering or traveling.