Environmental advocates participate in the "People's Walk for Climate Justice", a walkathon against climate change, which started at the Rizal Park in Manila October 2, 2014. The walk, which started today, will cover 1,000 kilometres starting from Manila to Tacloban City in central Philippines where super typhoon Haiyan struck heavily affecting tens of thousands residents. The walk will end on November 8, exactly a year after super typhoon Haiyan made landfall in the province, a organizer statement said. REUTERS/Romeo Ranoco (PHILIPPINES - Tags: SOCIETY ENVIRONMENT) 

Environmental advocates carry over their heads a giant purple globe, which participants say represents their unhappiness towards genetically modified organism (GMO) products, as they participate in the "People's Walk for Climate Justice", a walkathon against climate change, which started at the Rizal Park in Manila October 2, 2014. The walk, which started today, will cover 1,000 kilometres starting from Manila to Tacloban City in central Philippines where super typhoon Haiyan struck heavily affecting tens of thousands residents. The walk will end on November 8, exactly a year after super typhoon Haiyan made landfall in the province, a organizer statement said. REUTERS/Romeo Ranoco (PHILIPPINES - Tags: SOCIETY ENVIRONMENT) 

Environmental advocates participate in the "People's Walk for Climate Justice", a walkathon against climate change, which started at the Rizal Park in Manila October 2, 2014. The walk, which started today, will cover 1,000 kilometres starting from Manila to Tacloban City in central Philippines where super typhoon Haiyan struck heavily affecting tens of thousands residents. The walk will end on November 8, exactly a year after super typhoon Haiyan made landfall in the province, a organizer statement said. REUTERS/Romeo Ranoco (PHILIPPINES - Tags: SOCIETY ENVIRONMENT) 

Former head of the Catholic Church in Hong Kong Cardinal Joseph Zen (C), 82, takes part in a kick-off ceremony to urge people to vote in an unofficial referendum June 20, 2014. Tens of thousands of people voted for full democracy in Hong Kong within the first hour of an unofficial online referendum, a civil campaign that has sparked warnings from China's Communist Party leaders. Social tensions have steadily risen in the former British colony that returned to Chinese rule in 1997 - with pro-democracy activists threatening to blockade part of the city's financial district if China doesn't allow opposition candidates to run in a 2017 election. Chinese characters on the banner reads "Walkathon to demand universal suffrage". REUTERS/Bobby Yip (CHINA - Tags: POLITICS ELECTIONS BUSINESS) 

Supporters hold banners and placards at Hong Kong's financial Central district during a kick-off ceremony to urge people to vote in an unofficial referendum June 20, 2014. Tens of thousands of people voted for full democracy in Hong Kong within the first hour of an unofficial online referendum, a civil campaign that has sparked warnings from China's Communist Party leaders. Social tensions have steadily risen in the former British colony that returned to Chinese rule in 1997 - with pro-democracy activists threatening to blockade part of the city's financial district if China doesn't allow opposition candidates to run in a 2017 election. Chinese characters on the banner reads "Walkathon to demand universal suffrage". REUTERS/Bobby Yip (CHINA - Tags: POLITICS ELECTIONS BUSINESS) 

Hundreds of supporters walk past Hong Kong's financial Central district with banners and placards on the last day of a seven-day walkathon, to urge people to vote in an unofficial referendum June 20, 2014. Tens of thousands of people voted for full democracy in Hong Kong within the first hour of an unofficial online referendum, a civil campaign that has sparked warnings from China's Communist Party leaders. Social tensions have steadily risen in the former British colony that returned to Chinese rule in 1997 - with pro-democracy activists threatening to blockade part of the city's financial district if China doesn't allow opposition candidates to run in a 2017 election. Chinese characters on the banner reads "Walkathon to demand universal suffrage". REUTERS/Bobby Yip (CHINA - Tags: POLITICS ELECTIONS BUSINESS) 

Former head of the Catholic Church in Hong Kong Cardinal Joseph Zen (2nd R) and former lawmaker Martin Lee (R) join more than a hundred pro-democracy activists during a walkathon at Hong Kong's Mongkok shopping district June 14, 2014. More than 30 pan-democratic and religious groups began a seven-day walkathon in the territory on Saturday, calling for genuine universal suffrage, government radio reported. China has warned Hong Kong earlier in the week that there were limits to its freedom and it should adhere strictly to the law ahead of a planned pro-democracy protest that could end up shutting down part of the financial hub's business district. REUTERS/Bobby Yip (CHINA - Tags: POLITICS RELIGION TPX IMAGES OF THE DAY) 

Participants dressed in Santa Claus outfits run together toward a finish line during a charity run to help the poor around Olympic Park in Seoul December 10, 2011. About one thousand people took part in the 5-kilometer (3.1 miles) walkathon and run events to donate money, organisers said. REUTERS/Jo Yong-Hak (SOUTH KOREA - Tags: SOCIETY) 

Participants dressed in Santa Claus outfits walk together during a charity event to help the poor around Olympic Park in Seoul December 10, 2011. About one thousand people took part in the 5-kilometer (3.1 miles) walkathon and run events to donate money, organisers said. REUTERS/Jo Yong-Hak (SOUTH KOREA - Tags: SOCIETY) 

Participants dressed in Santa Claus outfits walk together during a charity event to help the poor around Olympic Park in Seoul December 10, 2011. About one thousand people took part in the 5-kilometer (3.1 miles) walkathon and run events to donate money, organisers said. REUTERS/Jo Yong-Hak (SOUTH KOREA - Tags: SOCIETY) 

Ayesha Al-Mutawa, spokesperson for Dubai Healthcare City speaks to media during the UAE leg of the Avon Walk around the world for Breast Cancer Awareness walkathon in Zaabeel park in Dubai, November 16, 2007, November 16, 2007. REUTERS/Jumana El Heloueh (UNITED ARAB EMIRATES) 

The world's largest awareness ribbon made of flowers is seen from above during the UAE leg of the Avon Walk around the world for Breast Cancer Awareness walkathon in Zaabeel park in Dubai, November 16, 2007. The ribbon was entered into the Guinness Book Of World Records, local media reported. REUTERS/Jumana El Heloueh (UNITED ARAB EMIRATES) 

The world's largest awareness ribbon made of flowers is seen from above during the UAE leg of the Avon Walk around the world for Breast Cancer Awareness walkathon in Zaabeel park in Dubai, November 16, 2007. The ribbon was entered into the Guinness Book Of World Records, local media reported. REUTERS/Jumana El Heloueh (UNITED ARAB EMIRATES) 

The world's largest awareness ribbon made of flowers is seen from above during the UAE leg of the Avon Walk around the world for Breast Cancer Awareness walkathon in Zaabeel park in Dubai, November 16, 2007. The ribbon was entered into the Guinness Book Of World Records, local media reported. REUTERS/Jumana El Heloueh (UNITED ARAB EMIRATES) 

Gillian O'Sullivan of Ireland celebrates finishing second in the women's 20km walk during the 9th World Athletics Championships at the Stade de France in Saint-Denis near Paris August 24, 2003. [Russia's Yelena Nikolayeva won in one hour 26 minutes 52 seconds.] 

Russia's Yelena Nikolayeva powers her way to winning the women's 20km walk at the 9th World Athletics Championships at the Stade de France in Saint-Denis near Paris August 24, 2003. Nikolayeva won in one hour 26 minutes 52 seconds. 

World Champion Olimpiada Ivanova of Russia leads the field at the start of the women's 20km walk during the 9th World Athletics Championships at the Stade de France in Saint-Denis near Paris August 24, 2003. 

Athletes walk at the start of the women's 20km walk during the 9th World Athletics Championships at the Stade de France in Saint-Denis near Paris August 24, 2003. 

An Indian child wears a mask symbolising death as he holds a booklet
informing about the harmful effects of tobacco during a walkathon in
Bombay, April 20, 2002. Organised by 'Crusade Against Tobacco, a
non-governmental organisation, several Indian celebrities took part in
the walkathon, to create awareness among people about the ill effects
of tobacco consumption. REUTERS/Roy Madhur

AD/RCS 

NBC's "Today" show co-anchor Katie Couric (L) greets one of the participants in the first "WebMD Rock 'n Race to Fight Colon Cancer" on October 8, 2000 in Washington. Couric, who's husband died in 1998 from the disease, co-founded the event which included a 5 kilometers walk-a-thon and a concert by singer Paul Simon.

BK/ME 

Singaporeans participate in the annual New Paper Walk along a highway in central Singapore May 21. About 77,000 people participated in this year's 10 kilometre walkathon, with the organisers hoping the number of participants makes this year's event eligible to be entered in the Guiness Book of Records.

ST/PB 

Three similarly dressed participants of the 100 km Trailwalker charity walkathon wait for the start of the event aimed at raising HK$12 million (US$1.55 million) in Hong Kong November 13. Trailwalker was founded by the Queen's Gurkha Signals in 1981 and has been jointly organised with Oxfam Hong Kong since 1986 with Hongkong Bank as sponsor. Oxfam Hong Kong took up the role of overall organiser in 1997 after the Gurkhas left Hong Kong.

LC/JO/WS 

Some of about 3,000 participants compete in the annual 100 km Trailwalker charity walkathon in a bid to raise HK$12 million (US$1.55 million) in Hong Kong November 13. Trailwalker was founded by the Queen's Gurkha Signals in 1981 and has been jointly organised with Oxfam Hong Kong since 1986 with Hongkong Bank as sponsor. Oxfam Hong Kong took up the role of overall organiser in 1997 after the Gurkhas left Hong Kong.

LC/JO/WS