The wording was slammed on social media, with recipients deeming it 'too soon' after the attack on the 2013 Boston Marathon, in which three people were killed and more than 250 injured after two bombs were detonated close to the finish line.
In a statement published on Twitter, Adidas said they were "incredibly sorry" for the "insensitive email subject line" and "deeply apologise for our mistake."
"The Boston Marathon is one of the most inspirational sporting events in the world," the statement continued. "Every year we're reminded of the hope and resiliency of the running community at this event."
/The telegraph/
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