Sky News sports correspondent Paul Kelso has said runners at the London Marathon will be encouraged to wear black ribbons on Sunday to remember the victims of the Boston blasts:
Runners will also be encouraged to wear black ribbons, which will be distributed when they register for the race
Earlier organisers of the race said they would be holding a period of silence before the start of the race.
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Leicester City players have been celebrating their Premier League title after Spurs drew with Chelsea on Monday night.
Tonight western and northern areas will remain a little breezy with a few showers at times.
Leicester are Premier League champions after Tottenham conceded a two-goal lead in a bad-tempered 2-2 draw at Chelsea.