Sound horizon r_d measured from combining BAO and SNe data with H0LiCOW lensing observations of each lens separately. Here, the distance calibration is set solely by the lensing observations of each individual lens. The measured sound horizon is shown as a function of lens redshift for fits with a flat model 3 (solid error bars) and a flat PEDE-CDM model (dashed error bars). For both models, the measurements show a slight trend of r_d increasing with lens redshift. The inference from models 1 and 2 is fully consistent with the model 3 results. The grey dashed line with shaded region shows Planck’s value of r_d and its (sub-percent) uncertainty obtained for the standard flat ΛCDM model.