The contest in 1930 was the only "Challenge", in which a rally was the opening phase. It was a 7560 km circuit over Europe, with compulsory stops at: Berlin – Braunschweig – Frankfurt – Reims – Saint-Inglevert – Bristol – London – Saint-Inglevert – Paris – Poitiers – Pau – Zaragoza – Madrid – Seville – Zaragoza – Barcelona – Nimes – Lyon – Lausanne – Bern – Munich – Vienna – Prague – Breslau (Wrocław) – Poznań – Warsaw – Königsberg (Kaliningrad) – Danzig (Gdańsk) – Berlin. Distances ranged from 77.5 km (Lausanne – Bern) to 410 km (Danzig – Berlin). In spite of attempts of many pilots at being the first man home, it was not a race, but rather a reliability test. A regularity of flights was the most important factor, the second was a cruise speed (minimal cruise speed had to be 80 km/h for Class I aircraft or 60 km/h for lighter Class II aircraft. Cruise speeds above 175/155 km/h respectively did not give extra points). The average speed was judged on flying time, so a competitor had to have his log book signed as soon after landing as possible. A competitor was given 75 points for regularity, which were mulcted for spending nights off the control airfield or not covering any stage in a day. One night outside the control or arrival after the official closing time (8 p.m.) costed 15 points, two nights – 45 points, and three failures to reach the control caused a disqualification. Also, for failing to fly any stage in a day, a competitor would lose 10 points, and for the second time – another 20 points. The original time limit for the return to Berlin was 4 p.m. on July 31, but it got extended later for some crews, due to bad weather in Pau. Apart from 75 points for regularity, up to 195 points could be gained for a high cruise speed. Comparing with 1929 competition, the rally could bring only 54% of maximum number of points (in 1929 – 72%), what meant more stress on technical trials.