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Bertha Benz (née Ringer) (born 3 May 1849 in Pforzheim, Germany, married inventor Karl Benz on 20 July 1872, and died 5 May 1944 in Ladenburg), was the first person to drive an automobile over a long distance.

On 5 August 1888 and without her husband's knowledge, she drove her sons, Richard and Eugen, fourteen and fifteen years old, in one of Benz's newly-constructed "Patent Motorwagen" automobiles — from Mannheim to Pforzheim — becoming the first person to drive an automobile over more than a very short distance. The distance was more than 106 km (more than sixty miles). Distances traveled before this historic trip were short, and merely trials with mechanical assistants.

Although the primary purpose of the trip was to visit her mother, Bertha Benz also had another motive: to show her brilliant husband — who had failed to consider marketing his invention adequately — that the automobile would become a financial success once it was shown to be useful to the general public.

Replica of the Benz Patent Motorwagen built in 1885 — the prototype of the model first driven a long distance (more than 106 km or sixty miles) by Bertha Benz in 1888

Underway, she solved numerous problems. She had to find petrol or similar fuels which were available — sometimes — only at chemists' shops. A blacksmith had to help with a chain at one point. Brake linings needed replacement. Bertha Benz had to use a long, straight hairpin to clean a fuel pipe which had become blocked and to insulate a wire with a garter. She left Mannheim around dawn and reached Pforzheim somewhat after dusk, notifying her husband of her successful journey by telegram. She drove back to Mannheim the next day.

Along the way, several people were frightened by the automobile and the novel trip received a great deal of publicity — as she had sought. The drive was very helpful for Karl Benz, as he was able to introduce several improvements after his wife reported everything that had happened along the way — and she made important suggestions, such as the introduction of an additional gear for greater ease climbing hills.

In Germany, a festive annual holiday celebrates this historic trip of Bertha Benz and features antique automobiles.

• The famous drive of Bertha Benz
• (German) [http://www.cms.daimlerchrysler.com/emb_classic/0,,0-195-78828-49-84707-1-0-0-0-0-0-434-78641-0-0-0-0-0-0-0,00.html The famous drive of Bertha Benz)