NameDateFormatLocationWeightNotes
HSCTF 814 June, 12:00 UTC — 19 June 2021, 00:00 UTCJeopardy On-line 24.5089 teams will participate
The Threat Interceptors Challenge14 June, 15:00 UTC — 16 June 2021, 15:00 UTCJeopardy On-line 0.0019 teams will participate
CTF InterIUT 202118 June, 20:00 UTC — 19 June 2021, 23:59 UTCJeopardy On-line 22.6216 teams will participate
WeCTF 202119 June, 17:00 UTC — 20 June 2021, 17:00 UTCJeopardy On-line 25.0027 teams will participate
CTFZone 202126 June, 10:00 UTC — 26 June 2021, 20:00 UTCAttack-Defense On-line 90.0012 teams will participate
Hack-A-Sat 2 Qualifiers26 June, 14:00 UTC — 27 June 2021, 20:00 UTCJeopardy On-line 25.0012 teams will participate
Hacky Holidays - Space Race02 July, 10:00 UTC — 26 July 2021, 10:00 UTCJeopardy On-line 00 teams will participate
CyberThreatForce CTF | 202102 July, 22:00 UTC — 04 July 2021, 22:00 UTCJeopardy On-line 0.0010 teams will participate
0CTF/TCTF 2021 Quals 03 July, 02:00 UTC — 05 July 2021, 02:00 UTCJeopardy On-line 0.004 teams will participate
redpwnCTF 202109 July, 19:00 UTC — 12 July 2021, 19:00 UTCJeopardy On-line 32.6128 teams will participate
ENOWARS 510 July, 12:00 UTC — 10 July 2021, 22:00 UTCAttack-Defense On-line 44.3314 teams will participate
Google Capture The Flag 202117 July, 00:00 UTC — 18 July 2021, 23:59 UTCJeopardy On-line 99.22114 teams will participate
RuCTF 202118 July, 10:00 UTC — 18 July 2021, 19:00 UTCAttack-Defense On-line 0.0019 teams will participate
ImaginaryCTF 202123 July, 16:00 UTC — 27 July 2021, 16:00 UTCJeopardy On-line 0.002 teams will participate
IJCTF 202124 July, 07:30 UTC — 25 July 2021, 07:30 UTCJeopardy On-line 23.390 teams will participate
CyBRICS CTF 202124 July, 10:00 UTC — 25 July 2021, 10:00 UTCJeopardy On-line 33.3210 teams will participate
Crypto CTF 202130 July, 16:00 UTC — 31 July 2021, 16:00 UTCJeopardy On-line 36.0030 teams will participate
UIUCTF 202131 July, 00:00 UTC — 02 Aug. 2021, 00:00 UTCJeopardy On-line 23.761 teams will participate
RaRCTF 202106 Aug., 17:00 UTC — 09 Aug. 2021, 17:00 UTCJeopardy On-line 0.000 teams will participate
TSG CTF 202107 Aug., 07:00 UTC — 08 Aug. 2021, 07:00 UTCJeopardy On-line 34.801 teams will participate
InCTF 202113 Aug., 13:30 UTC — 15 Aug. 2021, 13:30 UTCJeopardy On-line 70.417 teams will participate
Really Awesome CTF 202113 Aug., 19:00 UTC — 16 Aug. 2021, 19:00 UTCJeopardy On-line 23.497 teams will participate
corCTF 202121 Aug., 00:00 UTC — 23 Aug. 2021, 00:00 UTCJeopardy On-line 0.001 teams will participate
Midnight Sun CTF 2021 Finals27 Aug., 10:00 UTC — 28 Aug. 2021, 10:00 UTCJeopardy Stockholm, Sweden 52.9211 teams will participate
ALLES! CTF 202103 Sept., 16:00 UTC — 05 Sept. 2021, 16:00 UTCJeopardy On-line 36.3516 teams will participate
CSAW CTF Qualification Round 202110 Sept., 20:00 UTC — 12 Sept. 2021, 20:00 UTCJeopardy On-line 0.0013 teams will participate
COMPFEST CTF 202112 Sept., 08:00 UTC — 13 Sept. 2021, 08:00 UTCJeopardy On-line 0.000 teams will participate
VolgaCTF 2021 Final16 Sept., 06:00 UTC — 16 Sept. 2021, 15:00 UTCAttack-Defense Samara, Russian Federation 37.502 teams will participate
Hack-A-Sat 2 Finals17 Sept., 22:00 UTC — 19 Sept. 2021, 22:00 UTCAttack-Defense On-line 0.003 teams will participate
DownUnderCTF24 Sept., 09:00 UTC — 26 Sept. 2021, 09:00 UTCJeopardy24.4418 teams will participate
0CTF/TCTF 2021 Finals25 Sept., 01:00 UTC — 26 Sept. 2021, 09:00 UTCJeopardy Shanghai, China 0.003 teams will participate
TastelessCTF 202101 Oct., 18:00 UTC — 03 Oct. 2021, 18:00 UTCJeopardy On-line 35.646 teams will participate
pbctf 202109 Oct., 00:00 UTC — 11 Oct. 2021, 00:00 UTCJeopardy On-line 24.901 teams will participate
SPbCTF's Student CTF 2021 Quals10 Oct., 09:00 UTC — 10 Oct. 2021, 18:00 UTCJeopardy On-line 24.332 teams will participate
iCTF15 Oct., 17:00 UTC — 16 Oct. 2021, 02:00 UTCAttack-Defense On-line 0.007 teams will participate
N1CTF 202116 Oct., 00:00 UTC — 18 Oct. 2021, 00:00 UTCJeopardy On-line 53.542 teams will participate
CyberSecurityRumble CTF05 Nov., 20:00 UTC — 07 Nov. 2021, 20:00 UTCJeopardy41.603 teams will participate
CSAW CTF Final Round 202112 Nov., 19:00 UTC — 14 Nov. 2021, 14:00 UTCJeopardy On-line 24.402 teams will participate
SPbCTF's Student CTF 2021 Finals14 Nov., 09:00 UTC — 14 Nov. 2021, 18:00 UTCAttack-Defense On-line 25.00Prequalified teams only
Balsn CTF 202120 Nov., 02:00 UTC — 22 Nov. 2021, 02:00 UTCJeopardy On-line 37.001 teams will participate
GrabCON24 Dec., 13:09 UTC — 24 Dec. 2021, 13:09 UTCJeopardy On-line 0.001 teams will participate