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 days 48h 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

October 2027

8 dates

No competition with a confirmed date this month.

This month, no set day · announcements and estimates

CIIMIbero-American Interuniversity Mathematics Competition

Competition · usually held in October · 2027

Venue to be announcedMathematicsIbero-American

🎓 University

⏳ Dates and registration not announced yet

awaiting datesEstimateOfficial website ↗source

ECSCEuropean Cybersecurity Challenge (ECSC) 2027

European final · usually held in October · 2027

Denmark (city to be confirmed)⚡ TechnologyCybersecurityInternational

🧑‍💻 Teens🎓 University🌍 Adults

⏳ Dates and registration not announced yet

European national teams aged 14 to 25; invited countries take part as guest teams

awaiting datesEstimateOfficial website ↗source

HacktoberfestHacktoberfest

Open source month · usually held in October · 2027

Online and local meetups in many countries⚡ TechnologyOpen sourceInternational

🧑‍💻 Teens🎓 University🌍 Adults

⏳ Dates and registration not announced yet

Free

awaiting datesEstimateOfficial website ↗source

ICCInternational Cybersecurity Challenge (ICC) 2027

International final · October 2027 (days to be confirmed)

Ireland (city to be confirmed)⚡ TechnologyCybersecurityInternational

🎓 University🌍 Adults

Continental teams; Brazil is part of the CyberLATAM team

awaiting datesMonth announcedOfficial website ↗source

IEEEXtremeIEEEXtreme 21.0

24-hour programming contest · usually held in October · 2027

Online⚡ TechnologyProgrammingInternational

🎓 University

⏳ Dates and registration not announced yet

Teams of 1 to 3 IEEE student members, ages 18+

awaiting datesEstimateOfficial website ↗source

LDLudum Dare 62

Game jam (48 h compo or 72 h jam) · October 2027 (days to be confirmed)

Online⚡ TechnologyGamesInternational

🧑‍💻 Teens🎓 University🌍 Adults

Organizers confirmed editions every April and October through 2028; days to be announced

awaiting datesMonth announcedOfficial website ↗source

OBMBrazilian Mathematical Olympiad

OBM exam – single phase Levels 1 to 3 / Level U Phase 2 · usually held in October · 2027

Exam centers set by the OBM (invitees only)MathematicsBrazil

🧑‍💻 Teens🎓 University

⏳ Dates and registration not announced yet

awaiting datesEstimateOfficial website ↗source

RoadsecRoadsec – Hacker Festival & MegaHack

Annual edition of the Roadsec festival · usually held in October · 2027

São Paulo (SP), Brazil⚡ TechnologyCybersecurityBrazil

🧑‍💻 Teens🎓 University🌍 Adults

⏳ Dates and registration not announced yet

Latin America's largest hacker festival, featuring technical talks, workshops, and the Hackaflag CTF championship.

awaiting datesEstimateOfficial website ↗source

No date yet in 2027 (2)

CSCPTCybersecurity Challenge PT

Qualifying competition (date to be defined) · no date forecast yet · 2027

Online⚡ TechnologyCybersecurityIbero-American

🧑‍💻 Teens🎓 University

⏳ Dates and registration not announced yet

Selects Team Portugal for the ECSC; for students aged 14 to 25

awaiting datesNo forecastOfficial website ↗source

OutreachyOutreachy

Applications for paid internships (May cohort) · no date forecast yet · 2027

Online⚡ TechnologyOpen sourceInternational

🎓 University🌍 Adults

⏳ Dates and registration not announced yet

For people underrepresented in tech, ages 18+; in 2026, applications ran February 6–13

awaiting datesNo forecastOfficial website ↗source

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.