Twelve fastest crews were the lucky ones to get to Spain, because on July 23 and 24, the whole rest of crews were grounded in Pau due to bad weather over the Pyrenees. Lady Bailey was the last to try to fly to Zaragoza, but she was forced to return to Pau. Due to flight prohibition, there were no penalties for not flying farther, and the return time limit was extended by 24 or 48 hours, depending on time when the crew arrived at Pau. Five crews reached Barcelona on the 23rd, and Lausanne on the next day. On July 25, the weather improved and the rest of crews was allowed to fly to Zaragoza. Meanwhile, 4 fastest pilots: Hubert Broad, Sidney Thorn, Alan Butler and Reinhold Poss, reached Breslau, and Fritz Morzik – Prague. Four crews dropped out that day, among them the best Polish pilot Franciszek Żwirko, flying RWD-4 (due to engine failure), also two German and the only Belgian crew of Jacques Maus (St. Hubert G.1).