Distributed Computing challenges and races of this year:
January
01/01 - 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)
01/24 - 01/31 (10am PST = 18:00 UTC) 6th Annual Folding Challenge hosted by [H]ard|OCP (7 days)
01/20 - 01/23 (07:00 UTC) PrimeGrid Penguin Awareness Day Challenge (PPSE-LLR, 3 days)
February
02/01 - 03/01 (00:00 UTC) PrimeGrid Tour de Primes (all T5K-eligible projects, 28 days)
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)
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 (00:00 UTC) World Community Grid 21st Birthday Challenge (7 days) — tentative; maybe not happening
11/16 - 11/23 (12:00 UTC) PrimeGrid UNESCO Anniversary Challenge (CUL/WOO-LLR, 7 days)
December
12/04 - 12/07 Boinc Games BOINC Crunchers Remembrance Sprint (project TBA, 3 days)
12/21 - 12/31 (15:03 UTC) PrimeGrid Winter Solstice Challenge (GFN-22, 10 days)
January
01/01 - 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)
01/24 - 01/31 (10am PST = 18:00 UTC) 6th Annual Folding Challenge hosted by [H]ard|OCP (7 days)
01/20 - 01/23 (07:00 UTC) PrimeGrid Penguin Awareness Day Challenge (PPSE-LLR, 3 days)
February
02/01 - 03/01 (00:00 UTC) PrimeGrid Tour de Primes (all T5K-eligible projects, 28 days)
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)
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 (00:00 UTC) World Community Grid 21st Birthday Challenge (7 days) — tentative; maybe not happening
11/16 - 11/23 (12:00 UTC) PrimeGrid UNESCO Anniversary Challenge (CUL/WOO-LLR, 7 days)
December
12/04 - 12/07 Boinc Games BOINC Crunchers Remembrance Sprint (project TBA, 3 days)
12/21 - 12/31 (15:03 UTC) PrimeGrid Winter Solstice Challenge (GFN-22, 10 days)