April
The VO2 Sportive Cycling 01 April 2018 VO2 Cycling, Hildenborough, Kent
Spartan Races Super UK Obstacle 07 April 2018 Sevenoaks, Kent
Tough Mudder Midlands Half Obstacle 12 April 2018 Grantham, Lincolnshire
Tough Mudder London West Obstacle 28 April 2018 Culden Faw, Oxfordshire
May
Grand East Anglia Run Running 06 May 2018 King's Lynn, Norfolk
Great Birmingham Run Running 06 May 2018 Birmingham
Dulux London Revolution Cycling (2 day) 12 May 2018 London
North Downs Way 50 Running 19 May 2018 Farnham, Surrey
Brewin Dolphin Peaks Tour Cycling 19 May 2018 Bakewell, Derbyshire
Tough Mudder Midlands Obstacle 19 May 2018 Grantham, Lincolnshire
Rock 'N' Roll Marathon Running 19 May 2018 Liverpool, Merseyside
Baker Hughes 10K Running 20 May 2018 Aberdeen
Great Manchester Run Running 20 May 2018 Manchester
Edinburgh Marathon Running 26 May 2018 Edinburgh
June
The Wolf Run Obstacle 02 June 2018 Standord Hall, Leicestershire
Great North SwimRun Swimming 09 June 2018 Windermere, Lake District
South Downs Way 100 Running 09 June 2018 Winchester, Hampshire
Dragon Ride Cycling 10 June 2018 Port Talbot, South Wales
Windsor Trifecta Weekend Obstacle 10 June 2018 Bagshot, Berkshire
South Downs Trail Marathon Running 16 June 2018 Petersfield, Hampshire
The Wall Ultramarathon Running (2 day) 16 June 2018 Carlisle, Cumbria
Tough Mudder Scotland Obstacle 16 June 2018 Drumlanrig Castle, Thornhill
MagnifiCat Cycling 16 June 2018 Thatcham, Berkshire
Royal Windsor Triathlon Triathlon 17 June 2018 Windsor, Berkshire
Spartan Races Sprint UK Obstacle 22 June 2018 Aston Down, Gloucestershire
Great East Swim Swimming 23 June 2018 Alton Water, Suffolk
July
Bike Bath Cycling 01 July 2018 Bath, Somerset
Shock Absorber Women Only Triathlon 08 July 2018 Dorney Lake, Triathlon Berkshire
Dulux Color Run (London) Fun Run 08 July 2018 London, Wembley Park
Spartan Races Sprint & Super Obstacle 13 July 2018 Market UK Harborough, Leicestershire
Race to the Stones Running (2 day) 14 July 2018 Chinnor, Oxfordshire
Henley Mile Swimming 15 July 2018 Henley-on- Thames, Oxfordshire
Chiltern 100 Cycling Festival Cycling 15 July 2018 Chesham, Hertfordshire
Brisith 10K London Running 15 July 2018 London
August
Wiggle Yorkshire Tour Cycling 12 August 2018 Thirsk, North Sportive Yorkshire
Wiggle Northern Angel Cycling 13 August 2018 Ponteland, Sportive Northumberland
Tough Mudder South West Obstacle 18 August 2018 Cirencester, Gloucestershire
Great Scottish Swim Swimming 25 August 2018 Loch Lomond
September
Cardiff 10K Running 02 September Cardiff, South 2018 Wales
Tough Mudder North West Obstacle 08 September Malpas, 2018 Cheshire
Pedal for Scotland Cycling 09 September Glasgow 2018
Bristol Half Marathon Running 23 September Bristol 2018
Bank of Scotland Great Running 29 September Glasgow Scottish Run 2018
North West Triathlon Triathlon 30 September Nantwich, 2018 Cheshire
October
Spartan Races Sprint UK Obstacle 06 October Windsor, 2018 Berkshire
Warwickshire Triathlon Triathlon 07 October Stratford upon 2018 Avon, Warwickshire
Bournemouth Marathon Running 07 October Bournemouth, 2018 Dorset
Cardiff Half Marathon Running 07 October Cardiff, South 2018 Wales
The VO2 Sportive Cycling 07 October VO2 Cycling, Hildenborough 2018 Hildenborough, Kent
Wiggle South Downs 100 Cycling 14 October Chichester, 2018 West Sussex
Manchester Half Marathon Running 14 October Trafford, 2018 Manchester
Leicester Marathon Running 14 October Leicester, 2018 Leicestershire
Wiggle Hawker Hurricane Cycling 27 October Turweston 2018 Aerodrome, Brackley, Northamptonshire