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Gregathlon - Day 1
Greg James kicks off his Gregathlon for Sport Relief with a swim in Belfast Harbour.
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More clips from Gregathlon, Day 1 - Live from Belfast
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Gregathlon - Day 1 - the Swim
Duration: 01:34
More clips from Radio 1 Breakfast with Greg James
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Jake Gyllenhaal and Tom Holland rate your opinion
Duration: 05:56
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Radio 1's Summer Breakout - Who's the mystery voice?
Duration: 00:31
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Greg James' global mission is complete!
Duration: 03:23
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Greg is even taking over the Finnish airwaves now
Duration: 03:08
