U.S. Sen. Majority Leader Mitch McConnell (R-KY), walks from the Senate floor as both chambers of Congress are aimed to pass the coronavirus disease (COVID-19) package in a marathon session on Capitol Hill Washington, D.C., U.S., December 21, 2020. REUTERS/Ken Cedeno

U.S. Sen. Majority Leader Mitch McConnell (R-KY), walks from the Senate floor as both chambers of Congress are aimed to pass the coronavirus disease (COVID-19) package in a marathon session on Capitol Hill Washington, D.C., U.S., December 21, 2020. REUTERS/Ken Cedeno

Speaker of the House Nancy Pelosi (D-CA), walks from the Senate floor as both chambers of Congress are aimed to pass the coronavirus disease (COVID-19) package in a marathon session on Capitol Hill Washington, D.C., U.S., December 21, 2020. REUTERS/Ken Cedeno

Leeds Rhinos' Director of Rugby Kevin Sinfield and team react after finishing the last of seven marathons in seven days, to raise money and awareness for former teammate Rob Burrow, who sufferes with Motor Neurone Disease, in Saddleworth, December 7, 2020. Action Images via Reuters/Carl Recine

Leeds Rhinos' Director of Rugby Kevin Sinfield reacts after finishing the last of seven marathons in seven days, to raise money and awareness for former teammate Rob Burrow, who sufferes with Motor Neurone Disease, in Saddleworth, December 7, 2020. Action Images via Reuters/Carl Recine

Leeds Rhinos' Director of Rugby Kevin Sinfield during an interview after finishing the last of seven marathons in seven days, to raise money and awareness for former teammate Rob Burrow, who sufferes with Motor Neurone Disease, in Saddleworth, December 7, 2020. Action Images via Reuters/Carl Recine

Leeds Rhinos' Director of Rugby Kevin Sinfield reacts after finishing the last of seven marathons in seven days, to raise money and awareness for former teammate Rob Burrow, who sufferes with Motor Neurone Disease, in Saddleworth, December 7, 2020. Action Images via Reuters/Carl Recine

Leeds Rhinos' Director of Rugby Kevin Sinfield reacts as he approaches the finish of the last of seven marathons in seven days, to raise money and awareness for former teammate Rob Burrow, who sufferes with Motor Neurone Disease, in Saddleworth, December 7, 2020. Action Images via Reuters/Carl Recine

Leeds Rhinos' Director of Rugby Kevin Sinfield reacts as he approaches the finish of the last of seven marathons in seven days, to raise money and awareness for former teammate Rob Burrow, who sufferes with Motor Neurone Disease, in Saddleworth, December 7, 2020. Action Images via Reuters/Carl Recine

Leeds Rhinos' Director of Rugby Kevin Sinfield reacts after finishing the last of seven marathons in seven days, to raise money and awareness for former teammate Rob Burrow, who sufferes with Motor Neurone Disease, in Saddleworth, December 7, 2020. Action Images via Reuters/Carl Recine

Leeds Rhinos' Director of Rugby Kevin Sinfield hugs his wife after finishing the last of seven marathons in seven days, to raise money and awareness for former teammate Rob Burrow, who sufferes with Motor Neurone Disease, in Saddleworth, December 7, 2020. Action Images via Reuters/Carl Recine

Leeds Rhinos' Director of Rugby Kevin Sinfield during the last of seven marathons in seven days, to raise money and awareness for former teammate Rob Burrow, who sufferes with Motor Neurone Disease, in Saddleworth, December 7, 2020. Action Images via Reuters/Carl Recine

Leeds Rhinos' Director of Rugby Kevin Sinfield during the last of seven marathons in seven days, to raise money and awareness for former teammate Rob Burrow, who sufferes with Motor Neurone Disease, in Saddleworth, December 7, 2020. Action Images via Reuters/Carl Recine

Leeds Rhinos' Director of Rugby Kevin Sinfield during the last of seven marathons in seven days, to raise money and awareness for former teammate Rob Burrow, who sufferes with Motor Neurone Disease, in Saddleworth, December 7, 2020. Action Images via Reuters/Carl Recine

Leeds Rhinos' Director of Rugby Kevin Sinfield during the last of seven marathons in seven days, to raise money and awareness for former teammate Rob Burrow, who sufferes with Motor Neurone Disease, in Saddleworth, December 7, 2020. Action Images via Reuters/Carl Recine

Leeds Rhinos' Director of Rugby Kevin Sinfield during the last of seven marathons in seven days, to raise money and awareness for former teammate Rob Burrow, who sufferes with Motor Neurone Disease, in Saddleworth, December 7, 2020. Action Images via Reuters/Carl Recine

Leeds Rhinos' Director of Rugby Kevin Sinfield begins the last of seven marathons in seven days, to raise money and awareness for former teammate Rob Burrow, who sufferes with Motor Neurone Disease, in Saddleworth, December 7, 2020. Action Images via Reuters/Carl Recine

Leeds Rhinos' Director of Rugby Kevin Sinfield watches a video on a mobile phone before beginning the last of seven marathons in seven days, to raise money and awareness for former teammate Rob Burrow, who sufferes with Motor Neurone Disease, in Saddleworth, December 7, 2020. Action Images via Reuters/Carl Recine

Leeds Rhinos' Director of Rugby Kevin Sinfield before beginning the last of seven marathons in seven days, to raise money and awareness for former teammate Rob Burrow, who sufferes with Motor Neurone Disease, in Saddleworth, December 7, 2020. Action Images via Reuters/Carl Recine

Leeds Rhinos' Director of Rugby Kevin Sinfield before beginning the last of seven marathons in seven days, to raise money and awareness for former teammate Rob Burrow, who sufferes with Motor Neurone Disease, in Saddleworth, December 7, 2020. Action Images via Reuters/Carl Recine

Leeds Rhinos' Director of Rugby Kevin Sinfield before beginning the last of seven marathons in seven days, to raise money and awareness for former teammate Rob Burrow, who sufferes with Motor Neurone Disease, in Saddleworth, December 7, 2020. Action Images via Reuters/Carl Recine

Elite runners take part in the Airtel Delhi Half Marathon in New Delhi, India, November 29, 2020. REUTERS/Anushree Fadnavis

Elite runners take part in the Airtel Delhi Half Marathon in New Delhi, India, November 29, 2020. REUTERS/Anushree Fadnavis

Elite runners take part in the Airtel Delhi Half Marathon in New Delhi, India, November 29, 2020. REUTERS/Anushree Fadnavis

Elite runners take part in the Airtel Delhi Half Marathon in New Delhi, India, November 29, 2020. REUTERS/Anushree Fadnavis

Elite runners take part in the Airtel Delhi Half Marathon in New Delhi, India, November 29, 2020. REUTERS/Anushree Fadnavis

Elite runners take part in the Airtel Delhi Half Marathon in New Delhi, India, November 29, 2020. REUTERS/Anushree Fadnavis

Elite runners take part in the Airtel Delhi Half Marathon in New Delhi, India, November 29, 2020. REUTERS/Anushree Fadnavis

A participant checks his watch as he runs on the July 15 Martyrs' Bridge, known as the Bosphorus Bridge, which links the city's European and Asian sides, during the 42nd annual Istanbul Marathon in Istanbul, Turkey, November 8, 2020. REUTERS/Murad Sezer

Participants run on the July 15 Martyrs' Bridge, known as the Bosphorus Bridge, which links the city's European and Asian sides, during the 42nd annual Istanbul Marathon in Istanbul, Turkey, November 8, 2020. REUTERS/Murad Sezer

Turkish Police on motorcycles patrol on the July 15 Martyrs' Bridge, known as the Bosphorus Bridge, which links the city's European and Asian sides, during the 42nd annual Istanbul Marathon in Istanbul, Turkey, November 8, 2020. REUTERS/Murad Sezer

Jesper Claesson of Sweden runs on the July 15 Martyrs' Bridge, known as the Bosphorus Bridge, which links the city's European and Asian sides, during the 42nd annual Istanbul Marathon in Istanbul, Turkey, November 8, 2020. REUTERS/Murad Sezer

Participants run on the July 15 Martyrs' Bridge, known as the Bosphorus Bridge, which links the city's European and Asian sides, during the 42nd annual Istanbul Marathon in Istanbul, Turkey, November 8, 2020. REUTERS/Murad Sezer

Participants run on the July 15 Martyrs' Bridge, known as the Bosphorus Bridge, which links the city's European and Asian sides, during the 42nd annual Istanbul Marathon in Istanbul, Turkey, November 8, 2020. REUTERS/Murad Sezer

Participants run on the July 15 Martyrs' Bridge, known as the Bosphorus Bridge, which links the city's European and Asian sides, during the 42nd annual Istanbul Marathon in Istanbul, Turkey, November 8, 2020. REUTERS/Murad Sezer

A billboard offering COVID-19 relief hangs roadside next to the Marathon Petroleum Corporation amid the outbreak of the coronavirus disease (COVID-19) in Detroit, Michigan, U.S., October 29, 2020. REUTERS/Shannon Stapleton

A billboard offering COVID-19 relief hangs roadside next to the Marathon Petroleum Corporation amid the outbreak of the coronavirus disease (COVID-19) in Detroit, Michigan, U.S., October 29, 2020. REUTERS/Shannon Stapleton

Athletics - World Athletics Half Marathon Championships - Gdynia, Poland - October 17, 2020 Uganda's Jacob Kiplimo goes on to win the race REUTERS/Jadwiga Figula

Athletics - World Athletics Half Marathon Championships - Gdynia, Poland - October 17, 2020 General view of the race REUTERS/Jadwiga Figula

Athletics - World Athletics Half Marathon Championships - Gdynia, Poland - October 17, 2020 General view of the race REUTERS/Jadwiga Figula

Athletics - World Athletics Half Marathon Championships - Gdynia, Poland - October 17, 2020 Uganda's Jacob Kiplimo goes on to win the race REUTERS/Jadwiga Figula

Athletics - World Athletics Half Marathon Championships - Gdynia, Poland - October 17, 2020 Uganda's Jacob Kiplimo goes on to win the race REUTERS/Jadwiga Figula

Athletics - World Athletics Half Marathon Championships - Gdynia, Poland - October 17, 2020 General view of the race REUTERS/Jadwiga Figula

Athletics - World Athletics Half Marathon Championships - Gdynia, Poland - October 17, 2020 A runner takes a selfie after completing the half marathon virtually REUTERS/Jadwiga Figula

Athletics - World Athletics Half Marathon Championships - Gdynia, Poland - October 17, 2020 General view of the race REUTERS/Jadwiga Figula

Athletics - London Marathon - London, Britain - October 4, 2020 Second placed Switzerland's Manuela Schar celebrates on the podium after the women's wheelchair race Pool via REUTERS/John Sibley

Athletics - London Marathon - London, Britain - October 4, 2020 Third placed Jenna Fesemyer of the U.S. celebrates on the podium after the women's wheelchair race Pool via REUTERS/John Sibley

Athletics - London Marathon - London, Britain - October 4, 2020 Netherlands' Nikita den Boer celebrates winning the women's wheelchair race on the podium Pool via REUTERS/John Sibley

Athletics - London Marathon - London, Britain - October 4, 2020 Third placed Switzerland's Marcel Hug celebrates on the podium after the men's wheelchair race Pool via REUTERS/John Sibley

Athletics - London Marathon - London, Britain - October 4, 2020 Third placed Switzerland's Marcel Hug celebrates on the podium after the men's wheelchair race Pool via REUTERS/John Sibley

Athletics - London Marathon - London, Britain - October 4, 2020 Netherlands' Nikita den Boer celebrates winning the women's wheelchair race on the podium Pool via REUTERS/John Sibley

Athletics - London Marathon - London, Britain - October 4, 2020 Canada's Brent Lakatos celebrates winning the men's wheelchair race on the podium Pool via REUTERS/John Sibley

Athletics - London Marathon - London, Britain - October 4, 2020 Second placed Britain's David Weir celebrates on the podium after the men's wheelchair race Pool via REUTERS/John Sibley

Athletics - London Marathon - London, Britain - October 4, 2020 Canada's Brent Lakatos celebrates winning the men's wheelchair race on the podium Pool via REUTERS/John Sibley

Athletics - London Marathon - London, Britain - October 4, 2020 Canada's Brent Lakatos celebrates winning the men's wheelchair race on the podium with second placed Britain's David Weir and third placed Switzerland's Marcel Hug Pool via REUTERS/John Sibley

Athletics - London Marathon - London, Britain - October 4, 2020 Britain's David Weir finishes second in the men's wheelchair race Pool via REUTERS/Richard Heathcote

Athletics - London Marathon - London, Britain - October 4, 2020 Switzerland's Manuela Schar finishes second in the women's wheelchair race Pool via REUTERS/Richard Heathcote

Athletics - London Marathon - London, Britain - October 4, 2020 Netherlands' Nikita den Boer wins the women's wheelchair race Pool via REUTERS/Richard Heathcote