#custom-handle {
    width: 3em;
    height: 1.6em;
    top: 50%;
    margin-top: -.8em;
    margin-left: -55px;
    text-align: center;
    line-height: 1.6em;
  }
  
  #SliderDistancia .ui-slider-range { background: blue; }
  #SliderDistancia .ui-slider-handle { border-color: blue; }