ITU World Series
, Sydney (14 April); the opening round in this year's World Series starts at the foot of the Sydney Opera House. The men's field is missing Great Britain's world champion Alistair Brownlee and his brother Jonny, but women's world champion
Follow Helen Jenkins on Twitter.
- Great Britain Olympic Trials, Lee Valley White Water Centre & Nottingham (13-15 April); it's a double-header for British canoeing this weekend with GB's Olympic slalom and sprint hopefuls looking to impress the selectors. Slalom selection rests solely on this weekend but the canoe sprint athletes - including Olympic champion
- have further opportunities at next month's World Cup events.
- European Olympic qualifying tournament, Trabzon, Turkey (14-22 April); Great Britain have selected a team of seven, covering all five of the weight categories where Olympic places are still available. Among those hoping to secure an Olympic spot is middleweight
who won gold at a grand prix tournament in the Czech Republic last month after returning from shoulder surgery. You can view the full GB team
- European Championships, Antalya, Turkey (9-15 April); Commonwealth medallists
and Peter Kirkbride form part of the 12-strong GB team hoping to qualify for the Olympics. You can read the BBC's preview
World Cup, Hungary
(12-15 April); a big weekend for GB's Olympic hopefuls, as the results from this year's World Cups determine the British team for May's World Championships - the next opportunity for athletes to achieve the Olympic qualifying standard.
and Nick Woodbridge are the highest-ranked of the GB team in Hungary.
Follow Nick Woodbridge on Twitter.
South African Championships,
Port Elizabeth (13-14 April); among those trying to book a place at London 2012 is 400m runner Oscar Pistorius, who could make history as the first amputee runner to compete at the Olympics. He has
already achieved the qualifying time twice
and needs one more run inside 45.30 seconds to satisfy the South Africa Olympic Committee's requirements. The men's 400m final is on Saturday 14 April at 1315 BST.
, Shanghai (10-15 April); the first of three stages in this year's World Cup, which culminates in a Tokyo final in September. More than 300 archers will compete in China but Great Britain's London 2012 hopefuls are staying at home to concentrate on Olympic selection.
LAST WEEK'S HIGHLIGHTS
GB track cyclists strike gold in Australia; Ben Ainslie enjoys comeback win; Louis Smith clinches silver in China; and GB name three NBA stars in their Olympic squad.
Hoy snatches world keirin title
Great Britain won six gold medals - five in Olympic events - at a highly successful Track Cycling World Championships in Melbourne.
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