| Date | Club | Event | Level | Type |
| JANUARY | ||||
| 4th January 2026 | CHIG | Epping North | National | Forest |
| 18th January 2026 | SUFFOC | Tunstall Forest | Regional | EAL |
| 25th January 2026 | HAVOC | Langdon Hills | Regional | Forest |
| 25th January 2026 | BKO | Star Posts | National | Southern Champs |
| FEBRUARY | ||||
| 1st February 2026 | NOR | Sandringham | Regional | EAL |
| 7th February 2026 | HH | Egypt Woods | Major | British Night Champs |
| 8th February 2026 | HH | Egypt Woods | National | Ace of Hearts |
| 15th February 2026 | WAOC | Maulden Wood | Regional | Forest |
| 22nd February 2026 | EAOA | Brandon Country Park | National | Compass Sport Qualifier |
| 28th February 2026 | WOA | Carreg Goch | Major | British Orienteering Champs |
| MARCH | ||||
| 1st March 2026 | WOA | Margam Country Park | Major | British Relay Champs |
| 1st March 2026 | SOS | TBA | Regional | |
| 8th March 2026 | HAVOC | Weald Country Park | Regional | Forest |
| APRIL | ||||
| 3rd April 2026 | SOA | Perth | Major | JK Sprint |
| 4th April 2026 | SOA | Rannoch | Major | JK Middle |
| 5th April 2026 | SOA | Rannoch | Major | JK Long |
| 6th April 2026 | SOA | Tullochroisk | Major | JK Relay |
| 12th April 2026 | WAOC | Cambridge | Regional | Urban |
| 18th April 2026 | HOC | Brown Clee | Major | British Middle Distance Champs |
| 19th April 2026 | OD | Brown Clee | National | Midland Champs |
| MAY | ||||
| 10th May 2026 | SOS | Chelmsford | Regional | Urban |
| 17th May 2026 | SUFFOC | Sudbury | Regional | Urban |
| 23rd May 2026 | SAX | Canterbury | National | Urban |
| JUNE | ||||
| 7th June 2026 | NOR | Bowthorpe | Regional | Urban |
| 14th June 2026 | SOS | Baddow Ridge | Regional | Urban |
| 27th June 2026 | BOK | University of Bath | National | British Sprint Champs |
| AUGUST | ||||
| 2nd - 7th August 2026 | NWOA | Lake District | National | Lake 5 Day Orienteering Week |
| 15th August 2026 | SMOC | Milton Keynes | Regional | Urban |
| SEPTEMBER | ||||
| 19th September 2026 | SLOW | London | National | Urban |
| 20th September 2026 | DFOK | Woolwich | National | Urban |
| OCTOBER | ||||
| 4th Ocotber 2026 | HAVOC | Thorndon Park | Regional | Forest |
| NOVEMBER | ||||
| 1st November 2026 | WAOC | Santon Downham | Regional | EAL |
| DECEMBER | ||||
| 6th December | NOR | Bylaugh and Bawdeswell | Regional | Forest |