2026
Schedule of Boinc Games sprints to be included when they are announced.January
01/01 - 04/01 (00:00 UTC) Boinc Games Q1/2026 marathons
01/01 - 02/01 (12am CST = 06:00 UTC) TeAm AnandTech's Folding@Home record run (31 days)
01/16 - 01/23 (20:00 UTC) PrimeGrid World Nothing Day Challenge (ESP-LLR, 7 days)
01/24 - 01/31 (10am PST = 18:00 UTC) 7th Annual Folding Challenge hosted by [H]ard|OCP (7 days) — ATF thread
February
02/01 - 03/01 (00:00 UTC) PrimeGrid Tour de Primes (all T5K-eligible projects, 28 days)
March
03/07 - 03/17 (10:00) PrimeGrid Telephone Challenge (SoB-LLR, 10 days)
April
04/01 - 07/01 (00:00 UTC) Boinc Games Q2/2026 marathons
May
05/05 - 05/19 (00:00 UTC) XVIIth BOINC Pentathlon (14 days)
June
06/03 - 06/10 (21:00 UTC) PrimeGrid h4ck3r's Birthday Challenge (321-LLR, 7 days)
July
07/01 - 10/01 (00:00 UTC) Boinc Games Q3/2026 marathons
07/16 - 07/21 (16:00 UTC) PrimeGrid World Snake Day Challenge (Primorial Prime Search, or Factorial Prime Search perhaps?, 5 days)
August
08/12 - 08/15 (05:00 UTC) PrimeGrid Perseid Meteor Shower Challenge (PPSE, 3 days)
September
09/07 - 09/12 (14:41 UTC) PrimeGrid Baengno Challenge (SR5-LLR, 5 days)
October
10/01 - 01/01 (00:00 UTC) Boinc Games Q4/2026 marathons
10/02 - 10/07 (17:00 UTC) PrimeGrid Suzuki's Birthday Challenge (GFN19, 5 days)
November
11/06 - 11/13 (18:00 UTC) PrimeGrid Lehmer's Birthday Challenge (GCW-LLR, 7 days)
December
12/18 - 12/28 (22:00 UTC) PrimeGrid Photon Challenge (GFN22, 10 days)
2025
January01/01 - 04/01 (00:00 UTC) Boinc Games Q1/2025 marathons
01/01 - 02/01 (12am CST = 06:00 UTC) TeAm AnandTech's Folding@Home record run (31 days)
01/20 - 01/23 (07:00 UTC) PrimeGrid Penguin Awareness Day Challenge (PPSE-LLR, 3 days)
01/24 - 01/31 (10am PST = 18:00 UTC) 6th Annual Folding Challenge hosted by [H]ard|OCP (7 days) — ATF thread
February
02/01 - 03/01 (00:00 UTC) PrimeGrid Tour de Primes (all T5K-eligible projects, 28 days) — ATF thread
March
03/13 - 03/16 (03:00 UTC) Boinc Games Speed Skating Championship sprint (project TBA, 3 days)
03/24 - 03/29 (01:00 UTC) PrimeGrid Peter Bergmann's Birthday Challenge (GFN-18, 5 days)
April
04/01 - 07/01 (00:00 UTC) Boinc Games Q2/2025 marathons
04/13 - 04/20 (04:29 UTC) PrimeGrid Homestuck Day Challenge (GCW-LLR, 7 days)
May
05/05 - 05/19 (00:00 UTC) XVIth BOINC Pentathlon (14 days) — ATF thread
June
06/12 - 06/15 (12:00 UTC) Boinc Games 2025 U.S. Open Golf sprint (project TBA, 3 days)
06/12 - 06/17 (20:20 UTC) PrimeGrid's 20th Birthday Challenge (GFN-20, 5 days)
July
07/01 - 10/01 (00:00 UTC) Boinc Games Q3/2025 marathons
07/15 - 07/18 (20:00 UTC) Boinc Games 2025 MLB All-Star Game (project TBA, 3 days)
07/17 - 07/20 (16:00 UTC) PrimeGrid Terence Tao's Birthday Challenge (AP27, 3 days)
August
08/04 - 08/09 (23:00 UTC) PrimeGrid William Rowan Hamilton's Birthday Challenge (PPS-LLR, 5 days)
08/27 - 08/30 (14:00 UTC) Boinc Games 2025 FIFA U-20 World Cup sprint (project TBA, 3 days)
September
09/18 - 09/23 (08:00 UTC) PrimeGrid World Bamboo Day Challenge (Compositorial prime search, 5 days)
October
10/01 - 01/01 (00:00 UTC) Boinc Games Q4/2025 marathons
November
11/06 - 11/09 (19:00 UTC) Boinc Games 2025 UCI Indoor Cycling World Championships sprint (project TBA, 3 days)
11/16 - 11/23 (12:00 UTC) PrimeGrid UNESCO Anniversary Challenge (CUL/WOO-LLR, 7 days)
December
12/21 - 12/31 (15:03 UTC) PrimeGrid Winter Solstice Challenge (GFN-22, 10 days)
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