I shared a taxi with Avner last fall to the start of the Toronto marathon. Andrew suggested we go together, and spoke of Avner as a good friend and good person. On the way there, Avner told me he had missed qualifying for the Boston marathon before by a close margin, and was intending on trying again to run a time of 3:20 - which he did. He gave me advice in preparation of running my first marathon as well.
I ran into him at the Purim carnival at the JCC in April - he was helping Ofri on some preschool play equipment and seemed so sweet with him.
I am so sorry that this happened. It is so unfair.