Glenevan Altair was the fastest Welsh Springer Spaniel in 2017, stopping the clock at 8.60 seconds (23.78 mph), clear of the field. Two Welsh Springer Spaniels broke 20 mph. The top 3 came in at 21.5 mph on average.
See full AKC Fast CAT speed rankings — by breed, by year, and all-time — on Dash-Hound.