Masri is set to be joined by three others -- sprinter Ghadeer Ghroof from Jericho and swimmers Hamza Abdu from Jerusalem and Zakeya Nassar from Bethlehem in the occupied West Bank.
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Travel abroad is a problem for Gazans due to the Israeli-led blockade and Masri has just been granted a special permit to go to Beijing after missing eight international athletics meetings.
He gets only $100 a month from the Palestinian Athletics Federation -- a sum he says is insufficient for the multi-vitamins, nutritious food and quality running shoes needed to compete at the highest level.
Athletics federation chairman Nabil Mabrouk said sports funding was scant from a government focused on peace talks with Israel.