CTF calendar
Every capture-the-flag competition coming up, in your own timezone rather than in UTC, and with the one thing a listing cannot tell you: what the event is actually made of. ctfpal already indexes 25 of the 38 events below from previous years, challenge by challenge, so each of those carries a prep briefing built from what its past editions really ran - the category mix, the writeups worth reading first, and the tools to have open when the clock starts.
The event list comes from CTFtime, which is where organisers register their competitions. Registration, scoring and the team rankings live there and are not duplicated here.
- Scheduled
- 38
- Running now
- 6
- Starting this week
- 5
- With past editions here
- 25
38 events match the current filters
September 2026, 14 events
48 hoursJeopardyFlagship46
3 past editions indexed here, mostlypwn 55%crypto 18%stego 18%
48 hoursJeopardyRated34
4 past editions indexed here, mostlypwn 24%misc 20%crypto 17%
10 hoursJeopardyRomania, Constanța
1 past edition indexed here, mostlymisc 32%rev 20%crypto 16%
2 daysJeopardy1
36 hoursJeopardyStrong field33
2 past editions indexed here, mostlymisc 33%rev 27%web 20%
9 hoursAttack-DefenseFlagship53
4 past editions indexed here, mostlymisc 65%web 23%crypto 4%
48 hoursJeopardyFlagship12
4 past editions indexed here, mostlymisc 37%pwn 19%web 13%
7 hoursJeopardySeoul, Korea
October 2026, 13 events
48 hoursJeopardy10
Open entry, online, and short. A reasonable first CTF.
36 hoursJeopardyFlagship14
4 past editions indexed here, mostlycrypto 22%misc 22%pwn 19%
8 hoursAttack-DefenseStrong field8
1 past edition indexed here, mostlycrypto 33%forensics 33%misc 33%
4 daysJeopardy4
34 hoursJeopardyStrong field24
4 past editions indexed here, mostlymisc 25%crypto 17%forensics 14%
11 hoursAttack-DefenseIndonesia, BaliStrong field
2 past editions indexed here, mostlymisc 27%web 20%pwn 20%
48 hoursJeopardyFlagship37
4 past editions indexed here, mostlypwn 25%misc 25%crypto 19%
48 hoursJeopardyFlagship53
4 past editions indexed here, mostlymisc 57%pwn 21%web 19%
24 hoursAttack-DefenseChennai, Tamil Nadu11
2 past editions indexed here, mostlymisc 33%rev 27%web 20%
36 hoursHack quest
24 hoursJeopardyJaihind College of Engineering,At Post Kuran, Taluka Junnar, Pune - 410511, Maharashtra, India (19°09'47.2"N 73°54'52.2"E)
November 2026, 8 events
4 hoursJeopardySwitzerland, Yverdon-les-Bains6
36 hoursJeopardyRated2
4 past editions indexed here, mostlypwn 24%misc 20%crypto 17%
24 hoursJeopardyFlagship10
4 past editions indexed here, mostlymisc 34%pwn 27%crypto 16%
20 hoursJeopardyMathura, Uttar Pradesh, India7
8 hoursJeopardyStrong field2
2 past editions indexed here, mostlycrypto 50%forensics 33%misc 17%
December 2026, 3 events
48 hoursJeopardyRiyadh, Saudi Arabia
4 past editions indexed here, mostlycrypto 32%web 25%misc 18%
24 hoursJeopardyFlagship
4 past editions indexed here, mostlycrypto 33%web 22%pwn 19%