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 34 of the 48 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
- 48
- Running now
- 0
- Starting this week
- 6
- With past editions here
- 34
48 events match the current filters
August 2026, 6 events
24 hoursJeopardyFlagship105
24 hoursJeopardyRated124
4 past editions indexed here, mostlymisc 29%web 24%pwn 18%
24 hoursJeopardyFlagship170
4 past editions indexed here, mostlymisc 43%crypto 29%web 21%
24 hoursJeopardyStrong field13
1 past edition indexed here, mostlyweb 100%
15 hoursJeopardy28
Open entry, online, and short. A reasonable first CTF.
30 hoursHack questNew York City, USA
4 past editions indexed here, mostlymisc 23%crypto 21%pwn 20%
September 2026, 18 events
9 hoursJeopardyMalaysia, Subang Jaya5
48 hoursJeopardyStrong field23
1 past edition indexed here, mostlymisc 29%crypto 21%web 21%
48 hoursJeopardyStrong field13
4 past editions indexed here, mostlycrypto 23%misc 17%web 17%
10 hoursAttack-DefenseRussia, SamaraStrong field6
4 past editions indexed here, mostlyweb 31%crypto 19%rev 16%
48 hoursJeopardyFlagship13
3 past editions indexed here, mostlypwn 67%stego 22%crypto 11%
48 hoursJeopardyRated18
4 past editions indexed here, mostlymisc 25%pwn 17%crypto 16%
10 hoursJeopardyRomania, Constanța
1 past edition indexed here, mostlymisc 30%rev 26%crypto 15%
36 hoursJeopardyStrong field21
3 past editions indexed here, mostlyweb 29%misc 29%rev 24%
9 hoursAttack-DefenseFlagship41
4 past editions indexed here, mostlymisc 65%web 23%crypto 4%
7 hoursJeopardySeoul, Korea
October 2026, 11 events
48 hoursJeopardy3
Open entry, online, and short. A reasonable first CTF.
36 hoursJeopardyFlagship7
4 past editions indexed here, mostlymisc 27%crypto 24%forensics 16%
8 hoursAttack-DefenseStrong field2
1 past edition indexed here, mostlypwn 67%crypto 17%forensics 17%
12 hoursJeopardyStrong field5
2 past editions indexed here, mostlyforensics 50%web 25%pwn 25%
4 daysJeopardy3
34 hoursJeopardyStrong field17
4 past editions indexed here, mostlymisc 29%forensics 14%crypto 13%
11 hoursAttack-DefenseIndonesia, BaliStrong field
2 past editions indexed here, mostlymisc 27%web 20%pwn 20%
24 hoursAttack-DefenseChennai, Tamil Nadu11
3 past editions indexed here, mostlyweb 29%misc 29%rev 24%
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, 10 events
4 hoursJeopardySwitzerland, Yverdon-les-Bains5
36 hoursJeopardyRated
4 past editions indexed here, mostlymisc 25%pwn 17%crypto 16%
24 hoursJeopardyFlagship6
4 past editions indexed here, mostlymisc 44%web 40%crypto 8%
20 hoursJeopardyMathura, Uttar Pradesh, India5
December 2026, 3 events
48 hoursJeopardyRiyadh, Saudi Arabia
4 past editions indexed here, mostlymisc 29%web 24%pwn 18%
24 hoursJeopardyFlagship
4 past editions indexed here, mostlymisc 43%crypto 29%web 21%