CTFtime.org

CTF Events

NameDateFormatLocationWeightNotes
ZeroSecure CTF 202617 April, 05:30 UTC — 18 April 2026, 05:30 UTCJeopardy0.0021 teams will participate
CPCTF 202617 April, 11:00 UTC — 19 April 2026, 11:00 UTCJeopardy On-line 0Individual
CTF@CIT 202617 April, 16:00 UTC — 19 April 2026, 19:00 UTCJeopardy On-line 23.9383 teams will participate
BlueHens CTF 202617 April, 17:00 UTC — 19 April 2026, 05:00 UTCJeopardy On-line 44.7741 teams will participate
squ1rrel CTF 202617 April, 23:00 UTC — 19 April 2026, 06:00 UTCJeopardy On-line 32.4720 teams will participate
b01lers CTF 202618 April, 00:00 UTC — 20 April 2026, 00:00 UTCJeopardy On-line 66.0061 teams will participate
Midnight Sun CTF 2026 Quals18 April, 10:00 UTC — 19 April 2026, 10:00 UTCJeopardy On-line 48.17175 teams will participate
pingCTF 202618 April, 10:00 UTC — 19 April 2026, 10:00 UTCJeopardy On-line 46.2032 teams will participate
HiveCTF18 April, 15:00 UTC — 18 April 2026, 23:00 UTCJeopardy On-line 0.005 teams will participate
JerseyCTF VI18 April, 19:00 UTC — 19 April 2026, 19:00 UTCJeopardy On-line 37.0023 teams will participate
CyberNSK-Finals19 April, 12:00 UTC — 26 April 2026, 12:00 UTCAttack-Defense Russian, Novosibirsk, Novosibirsk State Technical University 0Casual4 teams will participate
TRX CTF 202624 April, 19:00 UTC — 26 April 2026, 19:00 UTCJeopardy On-line 24.1611 teams will participate
UMDCTF 202624 April, 22:00 UTC — 26 April 2026, 22:00 UTCJeopardy On-line 85.4857 teams will participate
HACKTHEON SEJONG 2026 Qualifier25 April, 01:00 UTC — 25 April 2026, 08:00 UTCJeopardy On-line 0Academic teams only21 teams will participate
Alfa CTF 202625 April, 06:00 UTC — 25 April 2026, 18:00 UTCJeopardy On-line 21.675 teams will participate
CTF@AC26 - Quals25 April, 07:00 UTC — 26 April 2026, 07:00 UTCJeopardy On-line 24.5312 teams will participate
MCTF 5.030 April, 19:00 UTC — 02 May 2026, 07:00 UTCJeopardy Algeria, Algiers 0.002 teams will participate
KubSTU CTF01 May, 07:00 UTC — 02 May 2026, 19:00 UTCJeopardy On-line 0.006 teams will participate
THEM?!CTF 202601 May, 18:00 UTC — 03 May 2026, 18:00 UTCJeopardy On-line 0.0017 teams will participate
UniVsThreats 26 Finals CTF02 May, 08:00 UTC — 03 May 2026, 15:00 UTCJeopardy Timisoara, Romania 0.000 teams will participate
RAZER CTF 202605 May, 06:30 UTC — 06 May 2026, 06:30 UTCJeopardy On-line 0.001 teams will participate
THCon 2K26 CTF07 May, 11:00 UTC — 08 May 2026, 11:00 UTCJeopardy On-line 34.678 teams will participate
PHONIX VIPER NOVA CTF#208 May, 10:00 UTC — 10 May 2026, 17:00 UTCJeopardy Romania, Bucharest 0.009 teams will participate
Break The Syntax CTF 202608 May, 16:00 UTC — 10 May 2026, 10:00 UTCJeopardy On-line 56.2510 teams will participate
DAMCTF 202609 May, 00:00 UTC — 11 May 2026, 00:00 UTCJeopardy On-line 33.425 teams will participate
Breach CTF 202609 May, 02:30 UTC — 10 May 2026, 02:30 UTCJeopardy On-line 23.8625 teams will participate
From Dusk Till Dawn Quals09 May, 09:00 UTC — 10 May 2026, 09:00 UTCJeopardy On-line 0.009 teams will participate
TJCTF 202615 May, 16:00 UTC — 17 May 2026, 16:00 UTCJeopardy On-line 65.0514 teams will participate
DaVinciCTF 202616 May, 08:00 UTC — 16 May 2026, 17:00 UTCJeopardy On-line 32.594 teams will participate
UralCUP 202617 May, 05:00 UTC — 17 May 2026, 13:00 UTCJeopardy On-line 0Academic teams only2 teams will participate
DEF CON CTF Qualifier 202622 May, 21:00 UTC — 24 May 2026, 21:00 UTCJeopardy On-line 63.2256 teams will participate
SecLeaf Q CTF 202623 May, 14:00 UTC — 24 May 2026, 14:00 UTCJeopardy On-line 0Individual
Hardwear.io USA 2026 Hardware CTF29 May, 17:00 UTC — 30 May 2026, 20:50 UTCJeopardy US, Santa Clara 0.002 teams will participate
Pwn2Play Open CTF30 May, 09:00 UTC — 30 May 2026, 18:00 UTCJeopardy On-line 0Casual1 teams will participate
WhiteHats TrojanCTF 202630 May, 09:00 UTC — 30 May 2026, 19:00 UTCJeopardy Netherlands, Eindhoven 0.000 teams will participate
BYUCTF 202630 May, 12:00 UTC — 31 May 2026, 12:00 UTCJeopardy On-line 53.298 teams will participate
Grey Cat The Flag 2026 Qualifiers31 May, 12:00 UTC — 01 June 2026, 12:00 UTCJeopardy On-line 47.5014 teams will participate
GPN CTF 202605 June, 10:00 UTC — 06 June 2026, 22:00 UTCJeopardy On-line 69.0018 teams will participate
SAS CTF 2026 Quals06 June, 12:00 UTC — 07 June 2026, 12:00 UTCJeopardy On-line 31.0020 teams will participate
SSMCTF 2026 Qualifiers07 June, 10:00 UTC — 08 June 2026, 10:00 UTCJeopardy On-line 0.0024 teams will participate
CyberSci Nationals 2025-202613 June, 13:00 UTC — 14 June 2026, 23:00 UTCJeopardy Ottawa, Canada 0.002 teams will participate
Crypto CTF 202613 June, 14:00 UTC — 14 June 2026, 14:00 UTCJeopardy On-line 91.0030 teams will participate
BCACTF 7.019 June, 10:00 UTC — 22 June 2026, 10:00 UTCJeopardy On-line 65.054 teams will participate
Google Capture The Flag 202619 June, 18:00 UTC — 21 June 2026, 18:00 UTCJeopardy On-line 88.8242 teams will participate
V1T CTF 202627 June, 02:00 UTC — 28 June 2026, 14:00 UTCJeopardy On-line 22.141 teams will participate
SekaiCTF 202627 June, 08:00 UTC — 29 June 2026, 08:00 UTCJeopardy On-line 79.2514 teams will participate
Grey Cat The Flag 2026 Finals28 June, 02:00 UTC — 29 June 2026, 02:00 UTCJeopardy Singapore 0.001 teams will participate
No Hack No CTF 202604 July, 00:00 UTC — 06 July 2026, 00:00 UTCJeopardy On-line 23.473 teams will participate
R3CTF 202604 July, 02:00 UTC — 06 July 2026, 02:00 UTCJeopardy On-line 35.953 teams will participate
L3akCTF 202610 July, 18:00 UTC — 12 July 2026, 18:00 UTCJeopardy On-line 34.4720 teams will participate
OmniCTF 2026 Quals17 July, 15:00 UTC — 19 July 2026, 15:00 UTCJeopardy On-line 0.003 teams will participate
DownUnderCTF 202617 July, 19:30 UTC — 19 July 2026, 19:30 UTCJeopardy On-line 94.9927 teams will participate
UIUCTF 202625 July, 00:00 UTC — 27 July 2026, 00:00 UTCJeopardy On-line 69.357 teams will participate
D^3CTF 202625 July, 12:00 UTC — 26 July 2026, 12:00 UTCJeopardy On-line 69.226 teams will participate
Universal CTF01 Aug., 07:00 UTC — 02 Aug. 2026, 15:00 UTCJeopardy On-line 0.000 teams will participate
scriptCTF 202608 Aug., 00:00 UTC — 10 Aug. 2026, 00:00 UTCJeopardy On-line 24.7014 teams will participate
gaslightCTF 202614 Aug., 12:00 UTC — 17 Aug. 2026, 12:00 UTCJeopardy On-line 0.003 teams will participate
BrunnerCTF 202621 Aug., 12:00 UTC — 23 Aug. 2026, 12:00 UTCJeopardy On-line 24.6612 teams will participate
ASIS CTF Quals 202629 Aug., 14:00 UTC — 30 Aug. 2026, 14:00 UTCJeopardy On-line 90.5344 teams will participate
NNS CTF 202604 Sept., 16:00 UTC — 06 Sept. 2026, 16:00 UTCJeopardy On-line 25.006 teams will participate
K17 CTF 202611 Sept., 10:00 UTC — 13 Sept. 2026, 10:00 UTCJeopardy On-line 24.834 teams will participate
Pointer Overflow CTF - 202627 Sept., 14:00 UTC — 06 Dec. 2026, 14:00 UTCJeopardy On-line 08 teams will participate
Hack.lu CTF 202623 Oct., 18:00 UTC — 25 Oct. 2026, 18:00 UTCJeopardy On-line 94.7413 teams will participate
BlackAlps CTF 202606 Nov., 18:15 UTC — 06 Nov. 2026, 22:30 UTCJeopardy Switzerland, Yverdon-les-Bains 0.000 teams will participate
WolvCTF 202613 Nov., 23:00 UTC — 15 Nov. 2026, 23:00 UTCJeopardy On-line 0.0045 teams will participate
Platypwn 202614 Nov., 09:00 UTC — 15 Nov. 2026, 21:00 UTCJeopardy On-line 37.0011 teams will participate
SwampCTF 202620 Nov., 21:00 UTC — 22 Nov. 2026, 21:00 UTCJeopardy On-line 0.004 teams will participate
ASIS CTF Finals 202627 Dec., 14:00 UTC — 28 Dec. 2026, 14:00 UTCJeopardy On-line 99.38