SAC Relays in Walnut, California, Cunningham jumped 1.94 m (6 ft 4+1⁄4 in),[5] to set the new national high school record.

On March 12, 2016, Vashti jumped 1.99 m (6 ft 6+1⁄4 in) while winning the 2016 USA Indoor Track and Field Championships in Portland, Oregon.

At the time, just one week before the 2016 IAAF World Indoor Championships, which were held in the same facility in the Portland convention center, Cunningham's jump was the No.

Cunningham jumped 1.95 m (6 ft 4+3⁄4 in) to place 3rd behind World Champion Mariya Lasitskene on May 27 in Eugene at IAAF Diamond League 2017 Prefontaine Classic.

On June 23, Cunningham jumped 1.99 m (6 ft 6+1⁄4 in) to win in 2017 USA Outdoor Track and Field Championships at Sacramento State University.

On July 7, 2023, Vashti Cunningham claimed her 13th U.S. high jump title with a victory at the U.S. outdoor track and field championships in Eugene, Oregon.