Super League Triathlon’s 2021 championship gets under way on 5 September with the opening event of the series in London.
Taking place from 5-12 September, the eight-stage Tour of Britain starts in Penzance and finishes in Aberdeen.
From 9-12 September 2021 at the Sparkassen-Arena in Jena, Germany.
From 10-14 September 2021 at Emirates Old Trafford in Manchester, England.
On 12 September 2021 in Munich, Germany.
First one-day international on Thursday 16 September at The Bristol County Ground in Bristol, England.
From 16-19 September at Bernardus Golf, Cromvoirt, Netherlands.
On Friday 17 September 2021 at Ski Dubai, Mall of the Emirates, Dubai, UAE.
On 18 September 2021 in Jersey, Channel Islands.
Rounds 19, 20, 21 at Croft from 18-19 September 2021.
From 18-19 September at Biķernieki National Sports Base in Riga, Latvia.
On Sunday 19 September at New Road in Worcester.
On Sunday 19 September 2021 in Belfast, Northern Ireland.
From 19-26 September 2021 in Flanders, Belgium.
On Tuesday 21 September at the Uptonsteel County Ground in Leicester, England.
Team USA vs. Team Europe at Whistling Straits in Kohler, Wisconsin, from 21-26 September.
On Thursday 23 September at The Incora County Ground in Derby, England.
Team World vs. Team Europe at TD Garden in Boston from 24-26 September.
IBF, WBA, WBO and IBO heavyweight title bout at Tottenham Hotspur Stadium in London.
Super League Triathlon 2021 Championship Series in Malibu, USA, on 25 September 2021.
Rounds 22, 23 and 24 at Silverstone National from 25-26 September 2021.
On Sunday 26 September at The Spitfire Ground in Canterbury, England.
One of the six world marathon majors, Berlin is the current marathon world record course.
Organised by SportsTravel from 27-30 September 2021 in Atlantic City, New Jersey, US.
European Tour men’s golf event from 30 September to 3 October at the Old Course St. Andrews
On Sunday 3 October 2021 in London, England.
On Sunday 3 October 2021 at Longchamps in Paris, France.
On Sunday 3 October in Loch Ness, Scotland
From 3-9 October 2021 at Morningside Arena in Leicester, England.
From 7-10 October 2021 at the Club de Campo Villa de Madrid in Madrid, Spain.
WBC and The Ring heavyweight title bout on Saturday 9 October at the T-Mobile Arena in Las Vegas.
Rounds 25, 26 and 27 from 9-10 October at Donington Park National.
From 9-10 October at Spa-Francorchamps in Belgium.
On Sunday 10 October at the Tottenham Hotspur Stadium in London, England.
From 14-17 October 2021 at Real Club Valderrama, Sotogrande, Spain.
World Rally Championship event from 14-17 October 2021 in Spain.
One of Greece’s main sports tourism events, which is held from 15-17 October 2021 in Messinia.
The world’s ‘richest race on turf’ will take place on 16 October at Royal Randwick Racecourse in Sydney, Australia.
On Sunday 17 October 2021 at the Tottenham Hotspur Stadium in London.
From 17 October to 14 November 2021 in the UAE and Oman.
Rounds 28, 29 and 30 from 23-24 October at Brands Hatch Circuit in Kent, England.
From 23-24 October at Montalegre International Circuit in Portugal.
From 26-31 October at Lee Valley VeloPark, Queen Elizabeth Olympic Park, London.
From 29-31 October 2021 at AFAS Live in Amsterdam, Netherlands.
From 30 October to 6 November 2021 at Flemington Racecourse in Melbourne, Victoria, Australia.
From 4-7 November 2021 at Dom Pedro Victoria Golf Course, Vilamoura, Portugal.
From 5-6 November 2021 at Del Mar in San Diego, California, US.
The 50th edition of the New York City Marathon will be held on Sunday 7 November 2021.
From 11-14 November 2021 at the Fire Course, Jumeirah Golf Estates, Dubai, UAE.
An unmissable three-day meeting at Cheltenham Racecourse - the Home of Jump Racing.
The 2021 men’s ATP Tour tennis season will come to a close at the ATP Finals in Turin, Italy.
From 18-21 November 2021 at Jumeirah Golf Estates in Dubai, UAE.
Final event of the 2021 World Rally Championship season.
The inaugural Formula 1 Qatar Grand Prix will take place from 19-21 November 2021 at the purpose-built Losail International Circuit.
From 23 November to 5 December at York Barbican Centre in York, England.
From 25-28 November 2021 at the Royal Albert Hall in London, England.
The cities of Madrid (Spain), Innsbruck (Austria) and Turin (Italy) will simultaneously host the group stages of the Davis Cup by Rakuten Finals 2021.
From 26-28 November 2021 at Butlin’s Minehead Resort in Somerset, England.
On Saturday 27 November 2021 (2.30pm GMT) at Twickenham Stadium in London, England.
On Sunday 28 November 2021 at Tokyo Racecourse in Tokyo, Japan.
From 26-27 December 2021 at Kempton Park Racecourse in Surrey, England.
On 27 December 2021 at Chepstow Racecourse in Chepstow, Wales.