Dark19,
for(j;j<points.length;j++){
(function(a, b) {
ymaps.route([centroids[a]['point'], points[b]['point']]).then(function (router) {
distance = Math.round(router.getLength() / 1000);
var result =
{
mas: centroids[a]['object'],
point: points[b]['point'],
distance: distance
};
console.log(result); });
})(i,j)
}