Calendar of Events - National Leagues
November 2019
| Date | Name | Format | Club | |
| 03/11/19 | Cannock Chase Rocket 4 | MBO Score | Midlands MBO | Details |
| 17/11/19 | Event 1 & Awards - Gilwern near Abergavenny | MBO Score | Black Mountains MBO | Details |
December 2019
| Date | Name | Format | Club | |
| 01/12/19 | Gaddesby - Leicester | MBO Score | Midlands MBO | Details |
| 14/12/19 | Sidlaw Swoop - North of Dundee | MBO Score | SMBO | Details |
| 29/12/19 | CATS Crackers 18 - Loddington Northamptonshire | MBO Score | Midlands MBO | Details |
January 2020
| Date | Name | Format | Club | |
| 12/01/20 | Event 2 - Redbrook SAF | MBO Score | Black Mountains MBO | Details |
February 2020
| Date | Name | Format | Club | |
| 23/02/20 | SLOW MBO Score Series 2020 #1: Thursley | MBO Score | SLOW MBO | Details |
March 2020
| Date | Name | Format | Club | |
| 01/03/20 | Event 3 - English Bicknor 'Re-Scheduled This is the New Date" | MBO Score | Black Mountains MBO | Details |
| 08/03/20 | Event 4 - Llanishen near Chepstow SAF | MBO Score | Black Mountains MBO | Details |
| 15/03/20 | Erewash Valley, Nottingham | MBO Score | Midlands MBO | Details |
| 28/03/20 | Lee Quarry MTBO *** POSTPONED *** | MTBO | Pendle Forest Orienteers | Details |
| 29/03/20 | Fosse Way Foxer, Leics ***POSTPONED*** | MBO Score | Midlands MBO | Details |
April 2020
| Date | Name | Format | Club | |
| 04/04/20 | Event 5 - The Wentwood SAF (CANCELLED) | MBO Score | Black Mountains MBO | Details |
| 18/04/20 | Washburn Valley - POSTPONED | MBO Score | NYMBO | Details |
| 18/04/20 | Northern Spain - cancelled | MTBO | World Masters MTBO Series | Details |
| 22/04/20 | Denmark MTBO Camp Cancelled | MTBO | World Masters MTBO Series | Details |
| 26/04/20 | Church Stretton, Shropshire ******POSTPONED****** | MBO Score | Midlands MBO | Details |
May 2020
| Date | Name | Format | Club | |
| 01/05/20 | Hungary Vesprem | MTBO | World Masters MTBO Series | Details |
| 02/05/20 | OMM Day One - Cannock Chase (CANCELLED) | MBO Score | Black Mountains MBO | Details |
| 03/05/20 | OMM Day Two - Cannock Chase (CANCELLED) | MBO Score | Black Mountains MBO | Details |
| 10/05/20 | SLOW MBO Score Series 2020 #2: South Downs/Brighton (POSTPONED) | MBO Score | SLOW MBO | Details |
| 10/05/20 | Dimmingsdale & Churnet Valley, Staffordshire ***POSTPONED*** | MBO Score | Midlands MBO | Details |
| 16/05/20 | Ripon (North Yorkshire) POSTPONED | MBO Score | NYMBO | Details |
| 17/05/20 | Crick, Northamptonshire *** CANCELLED *** | MBO Score | Details | |
| 24/05/20 | Event 6 - North Nibley, Gloucestershire (CANCELLED) | MBO Score | Black Mountains MBO | Details |
| 31/05/20 | The Chedworth Chibbler | MBO Score | Midlands MBO | Details |
June 2020
| Date | Name | Format | Club | |
| 13/06/20 | Kildale (North York Moors) | MBO Score | NYMBO | Details |
| 14/06/20 | Upper Brailes, Banbury, Oxfordshire *** Cancelled *** | MBO Score | Midlands MBO | Details |
| 20/06/20 | France - Alsace | MTBO | World Masters MTBO Series | Details |
| 20/06/20 | National Championships Day 1 - Postponed | MBO Score | West Coast MTB | Details |
| 21/06/20 | National Championships Day 2 - Postponed | MBO Score | West Coast MTB | Details |
| 28/06/20 | Twycross, Leicestershire | MBO Score | Midlands MBO | Details |
July 2020
| Date | Name | Format | Club | |
| 02/07/20 | Czech - Cancelled | MTBO | World Masters MTBO Series | Details |
| 05/07/20 | Event 8 - The Black Mountains (CANCELLED) | MBO Score | Black Mountains MBO | Details |
| 08/07/20 | Austria | MTBO | World Masters MTBO Series | Details |
| 12/07/20 | Welland Valley CC - Leicestershire | MBO Score | Midlands MBO | Details |
August 2020
| Date | Name | Format | Club | |
| 23/08/20 | SLOW MBO Score Series 2020 #3: Effingham | MBO Score | SLOW MBO | Details |
| 29/08/20 | Malham Show (Yorkshire Dales) | MBO Score | NYMBO | Details |
| 29/08/20 | Sweden cancelled | MTBO | World Masters MTBO Series | Details |
| 31/08/20 | Ampleforth (North Yorks) | MBO Score | NYMBO | Details |
September 2020
| Date | Name | Format | Club | |
| 04/09/20 | Norway- Tromso | MTBO | World Masters MTBO Series | Details |
| 06/09/20 | Event 9 - Trecastle near Brecon | MBO Score | Black Mountains MBO | Details |
| 11/09/20 | Finland - World masters Championship | MTBO | World Masters MTBO Series | Details |
| 13/09/20 | Lowsonford, Warwickshire | MBO Score | Midlands MBO | Details |
| 19/09/20 | Yorkshire Wolds | MBO Score | NYMBO | Details |
| 26/09/20 | SLOW MBO Score Series 2020 #4: Chilterns Day 1 | MBO Score | SLOW MBO | Details |
| 27/09/20 | SLOW MBO Score Series 2020 #5: Chilterns Day 2 | MBO Score | SLOW MBO | Details |
October 2020
| Date | Name | Format | Club | |
| 03/10/20 | Richmond (Yorks) | MBO Score | NYMBO | Details |
| 04/10/20 | Event 10 - Llanwonno near Pontypridd | MBO Score | Black Mountains MBO | Details |
| 18/10/20 | Loddington, Northamptonshire | MBO Score | Midlands MBO | Details |
| 25/10/20 | SLOW MBO Score Series 2020 #6: Surrey Hills | MBO Score | SLOW MBO | Details |
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