Australian woman gored during Pamplona bull run improves

The condition of an Australian woman has reportedly improved in hospital after she was gored by a bull during the annual running of the bulls in Pamplona in Spain.

The 23-year-old woman, identified in Spanish media as Jessica Escarlet, has undergone surgery at the Navarra Hospital after her back was pierced by a bull horn as she attempted to climb over a fence in the final bull run of this year's annual San Fermin festival.

The NSW woman suffered multiple rib fractures and damage to her right lung that left her initially in a "very grave" condition.

But after surgery, she was moved to a recovery unit where her condition was listed as "very serious", according to the hospital.

Javier Sesma, the emergency director of Navarra Hospital, said the bull's horns did not pierce the woman's vital organs and doctors were "hopeful" she would recover, according to Spanish newspaper Diario de Navarra.

Officials from the Australian embassy in Madrid are providing the woman with consular assistance.

The woman was struck by a massive Miura bull as she clung to wooden barriers outside the bullring entrance, regional health authority spokesman Javier Sesma said.

Four other runners were also hospitalised after sustaining cuts and bruises.

The other injured were a 39-year-old man from California, a 23-year-old man from Madrid and two other men from Navarra, according to a statement from the regional government, which organises the festivities. None of those injuries were classified as serious.

Miura bulls are renowned as Spain's largest and fastest fighting bulls, and Sunday's run was quick, taking 2 minutes, 16 seconds to cover 850 metres from stables just outside Pamplona's medieval stone wall to the central bullring.