The trip took 72-year-old activist Dorothee Hildebrandt and her pink e-bike, which she fondly calls Miss Piggy, after the temperamental character from The Muppet Show, more than four months. She crisscrossed Europe and the Middle East until she arrived in Sharm el-Sheikh, at the southern tip of the Sinai Peninsula.

Here mission is to raise awareness and urge world leaders gathered at the annual U.N. climate conference known as COP27 to take concrete steps to stop climate change, she said. Greenhouse gas emissions continue to rise and scientists say the amount of heat-trapping gases needs to be almost halved by 2030, to meet temperature-limiting goals of the Paris climate accord of 2015.

Since her arrival a week ago, Hildebrandt and her e-bike have become a fixture at the summit. From a friend's place where she is staying, some 15 kilometers (9 miles) from the conference venue, she bikes to the city center every day, meeting other activists, attending events.

"They really have to stop climate change,'' Hildebrandt says of the world leaders. "Even if it is uncomfortable," it has to be done, for the sake of the future.

"It was uncomfortable for me ... this long ride," she told The Associated Press. But she wanted to show that if there's a will, "you can do it," she said.

Born in the town of Kassel in central Germany, Hildebrandt says she got her first bicycle at the age of 10 and never stopped pedaling. In 1978 she moved with her husband to Sweden, where she worked cleaning houses and then trained in taking care of the elderly and people with disabilities.

She retired more then a decade ago. Her activism and biking, which she documents on social media, is for her two grandchildren, she says. A sign on her bike reads, "Biking for Future and Peace.''

In her hometown of Katrineholm, just north of Stockholm, the Swedish capital, she is part of "Grandmas for Future'' group that focuses on raising climate change awareness.

Hildebrandt says she also wants Western industrialized nations to pay for the destruction they have caused so far, an issue called loss and damage, about reparations from big polluters to impoverished countries that have been hurt the most.

Unhappy with results from the previous climate conference, COP26 in Glasgow, Scotland, she saw her chance in Sharm el-Sheikh.

Starting out on July 1, Hildebrandt cycled through 17 countries, covering some 8,830 kilometers (5,487 miles), averaging about 80 kilometers (49 miles) a day. Her Facebook posts got thousands of views and she says she received positive feedback both from followers and people she met along the way.

In the Turkish coastal city of Antalya, her bike broke down. Volunteers raced to help repair it, and she was able to continue on.

She was forced to hire a taxi for stretches of conflict-wrecked Syria, where she had a mandatory bodyguard, and also in Lebanon. Even in Sinai, local authorities barred her from cycling from the port of Nwueiba to Sharm el-Sheikh, apparently for her safety, she said.

Still, she is confident she has gotten her message across.

On Thursday, she was invited to cycle with Egyptian President Abdel-Fattah el-Sisi, an avid cyclist. She complained about the lack of activism and large protests, compared to previous summits. The Egyptian leader assured her the voice of the activists would be heard in Sharm el-Sheikh.

"Everyone is allowed to demonstrate," he told her, Hildebrandt says.

After the summit ends Nov. 18, Hildebrandt will bike to Cairo, then on to the Mediterranean city of Alexandria where she will board a ferry to Israel's port of Haifa and from there, on to Greece.

*This story was edited by Ahram Online