The 2021 World Triathlon Championship Series mixed relay takes centre stage in Hamburg on Sunday, 19 September in the format that provided brilliant entertainment on its Olympic debut in Tokyo.
With world champions France missing this event and Great Britain's Olympic mixed relay gold winning athletes not competing, the race will be wide open.
Great Britain are sending four athletes to Hamburg: Olivia Mathias, Daniel Dixon, Connor Bentley and Sian Rainsley, who are all in contention for the mixed relay team.
Olympic silver-medallists USA won the most recent championship series in Montreal, Canada but face tough competition from home nation Germany who have been on the mixed relay podium in Hamburg four times before and should feature women's sprint race winner Laura Lindemann.
The Hamburg leg of the series is completed over mixed relay distances of 0.3km swim, 7km bike and 1.7km run.
Getty ImagesCopyright: Getty Images
Watch 'phenomenal' photo finish in men's sprint race
Video content
Video caption: Germany's Hellwig wins Hamburg triathlon in 'phenomenal' photo finishGermany's Hellwig wins Hamburg triathlon in 'phenomenal' photo finish
How can I watch the World Triathlon Championship series?
All times are BST and subject to change
Coverage of the Hamburg leg of the World Triathlon Championship Series will be available live on BBC Red Button, BBC iPlayer and the BBC Sport website and app.
It will be available on catch-up for 30 days afterwards too.
Full coverage details:
Sunday, 19 September
10:20-11:50: Women's elite race replay - BBC Red Button
11:50-13:25: Men's elite race replay - BBC Red Button
13:25-15:15: Mixed relay - BBC Red Button, BBC iPlayer and the BBC Sport website and app
Coverage of the Bermuda (16-17 October) and Abu Dhabi (5-6 November) legs will also be available on the BBC.
How to get into triathlon
BBC Sport
Like running, swimming or cycling? Fancy doing all three, one after the other? If you answered yes to the previous two questions then triathlon is the sport for you!
The main triathlon season runs from May until September and there are loads of races to choose from - there are over 750 triathlon clubs in the UK with many of them offering taster sessions for people interested in taking up the sport. You can find a comprehensive list of races via the British Triathlon event finder.
Triathlon England's Go Tri scheme is a fun way to get a taste of the sport without breaking the bank. You'll also find training advice and tips about transitioning from one discipline to another on their website. Local pool-based races are a great introduction to the sport if you are a first timer.
Live Reporting
All times stated are UK
Getty ImagesCopyright: Getty Images Video caption: Germany's Hellwig wins Hamburg triathlon in 'phenomenal' photo finishGermany's Hellwig wins Hamburg triathlon in 'phenomenal' photo finish 
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The 2021 World Triathlon Championship Series mixed relay takes centre stage in Hamburg on Sunday, 19 September in the format that provided brilliant entertainment on its Olympic debut in Tokyo.
With world champions France missing this event and Great Britain's Olympic mixed relay gold winning athletes not competing, the race will be wide open.
Great Britain are sending four athletes to Hamburg: Olivia Mathias, Daniel Dixon, Connor Bentley and Sian Rainsley, who are all in contention for the mixed relay team.
Olympic silver-medallists USA won the most recent championship series in Montreal, Canada but face tough competition from home nation Germany who have been on the mixed relay podium in Hamburg four times before and should feature women's sprint race winner Laura Lindemann.
The Hamburg leg of the series is completed over mixed relay distances of 0.3km swim, 7km bike and 1.7km run.
Watch 'phenomenal' photo finish in men's sprint race
Video content
How can I watch the World Triathlon Championship series?
All times are BST and subject to change
Coverage of the Hamburg leg of the World Triathlon Championship Series will be available live on BBC Red Button, BBC iPlayer and the BBC Sport website and app.
It will be available on catch-up for 30 days afterwards too.
Full coverage details:
Sunday, 19 September
10:20-11:50: Women's elite race replay - BBC Red Button
11:50-13:25: Men's elite race replay - BBC Red Button
13:25-15:15: Mixed relay - BBC Red Button, BBC iPlayer and the BBC Sport website and app
Coverage of the Bermuda (16-17 October) and Abu Dhabi (5-6 November) legs will also be available on the BBC.
How to get into triathlon
BBC Sport
Like running, swimming or cycling? Fancy doing all three, one after the other? If you answered yes to the previous two questions then triathlon is the sport for you!
The main triathlon season runs from May until September and there are loads of races to choose from - there are over 750 triathlon clubs in the UK with many of them offering taster sessions for people interested in taking up the sport. You can find a comprehensive list of races via the British Triathlon event finder.
Triathlon England's Go Tri scheme is a fun way to get a taste of the sport without breaking the bank. You'll also find training advice and tips about transitioning from one discipline to another on their website. Local pool-based races are a great introduction to the sport if you are a first timer.