Marathon stride-by-stride webcast

2:25 p.m.: Women - Svetlana Zakharova of Russia, who finished second here last year, has moved onto Boylston Street. The course record of 2:20:43 was set last year by Margaret Okay of Kenya, who is in fourth place today. Zakharova ran a personal best of 2:21:31 in Chicago last year. She was ranked the No. 4 marathoner in the world by Track & Field magazine and is the Russian national recordholder.

2:20 p.m.: Women - Svetlana Zakharova of Russia, who finished second here last year, is well ahead in Kenmore Square. The course record of 2:20:43 was set last year by Margaret Okay of Kenya, who is in fourth place today. Zakharova ran a personal best of 2:21:31 in Chicago last year. She is the Russian national recordholder.

2:17 p.m.: Men - Robert Kipkoech Cheruiyot, 24, of Kenya has won the 107th Boston Marathon in a time of 2:10:11. This is his first Boston Marathon; he won his first marathon last December in Milan. The course record is 2:07:15, set by Cosmas Ndeti of Kenya in 1994.
Women - Svetlana Zakharova of Russia, who finished second here last year, is well ahead. The course record is 2:20:43, set last year by Margaret Okayo of Kenya. Zakharova ran a personal best of 2:21:31 in Chicago last year. She is the Russian national recordholder.

2:10 p.m.: Men - Robert Kipkoech Cheruiyot, 24, of Kenya has won the 107th Boston Marathon in a time of 2:10:11. This is his first Boston Marathon; he won his first marathon last December in Milan. The course record is 2:07:15, set by Cosmas Ndeti of Kenya in 1994.
Women - Svetlana Zakharova of Russia, who finished second last year, is well ahead. The course record is 2:20:43, set last year by Margaret Okayo of Kenya. Zakharova has finished in the top three in her last 15 marathons.

2:10 p.m.: Men - Robert Kipkoech Cheruiyot of Kenya has turned on Hereford Street, just yards from the finish line. The course record is 2:07:15, set by Cosmas Ndeti of Kenya in 1994.
Women - Svetlana Zakharova of Russia, who finished second last year, is well ahead. The course record is 2:20:43, set last year by Margaret Okay of Kenya. Zakharova has finished in the top three in her last 15 marathons.

2 p.m.: Men - Robert Kipkoech Cheruiyot of Kenya has opened up a 100-yard lead as the men head into Kenmore Square. The course record is 2:07:15, set by Cosmas Ndeti of Kenya in 1994. Women - Svetlana Zakharova of Russia, who finished second last year, is well ahead as the women negotiate Heartbreak Hill. The course record is 2:20:43, set last year by Margaret Okayo of Kenya. Zakharova has finished in the top three in her last 15 marathons.

1:55 p.m.: Men - Robert Kipkoech Cheruiyot of Kenya has opened up a slight lead as the men turn onto Beacon Street. The course record is 2:07:15, set by Cosmas Ndeti of Kenya in 1994.
Women - Svetlana Zakharova of Russia, who finished second last year, has opened up a sizable lead over her countrywoman, Lyubov Denisova of Russia, of more than 50 yards.

1:50 p.m.: Men - Robert Kipkoech Cheruiyot of Kenya has opened up a slight lead as the men turn onto Beacon Street.
Women - Lyubov Denisova of Russia has overtaken her countrywoman, Svetlana Zakharova. Margaret Okayo of Kenya has dropped to third.
Women's Wheelchair - Christina Ripp of Illinois has won the women's wheelchair race in a time of 1:54:46. Cheri Blauwet of California will finish second. The course record is 1:34:22, set by Jean Driscoll of Illinois in 1994.

1:45 p.m.: Women's Wheelchair - Christina Ripp of Illinois has won the women's wheelchair race in a time of 1:54:46. Cheri Blauwet of California will finish second. The course record is 1:34:22, set by Jean Driscoll of Illinois in 1994.
Women - Svetlana Zakharova of Russia has regained the lead, and Lyubov Denisova, also of Russia, has moved up to third behind Margaret Okayo of Kenya. Men - At the approach to Boston College, defending champion Rodgers Rop has fallen place to sixth place; Robert Kipkoech Cheruiyot and Timothy Cherigat, both of Kenya, are running side-by-side in the lead.

1:40 p.m.: Women's Wheelchair - Christina Ripp of Illinois has won the women's wheelchair race in a time of 1:54:46. Cheri Blauwet of California will finish second. The course record is 1:34:22, set by Jean Driscoll of Illinois in 1994.
Women - Margaret Okayo of Kenya has opened up a sizable lead over Russia's Svetlana Zakharova again.
Men - About six men are bunched at the lead; among them are last year's winner, Rodgers Rop of Kenya, as well as his countryman Benjamin Kosgei Kimutai. Vincent Kipsos of Kenya, who led for much of the first 10 to 12 miles, dropped out of the race at Mile 14.

1:40 p.m.: Women - Margaret Okayo of Kenya has opened up a sizable lead over Russia's Svetlana Zakharova again.
Men - About 10 men are bunched at the lead; among them are last year's winner, Rodgers Rop of Kenya, as well as his countryman Benjamin Kosgei Kimutai. Vincent Kipsos of Kenya, who led for much of the first 10 to 12 miles, dropped out of the race at Mile 14. Women's Wheelchair - Cheri Blauwet of California and Christina Ripp Christina Ripp of Illnois are leading with less than a mile to go. The course record is 1:34:22, set by Jean Driscoll of Illinois in 1994.

1:37 p.m.: Women - Margaret Okayo of Kenya has opened up a sizable lead over Russia's Svetlana Zakharova again.
Men - About 10 men are bunched at the lead; among them are last year's winner, Rodgers Rop of Kenya, as well as his countryman Benjamin Kosgei Kimutai. Vincent Kipsos of Kenya, who led for much of the first 10 to 12 miles, dropped out of the race at Mile 14.
Women's Wheelchair - Cheri Blauwet of California and Christina Ripp of Illnois are leading the women's wheelchair race with less than four miles to go; Edith Hunkeler of Switzerland lost ground on Heartbreak Hill.

1:35 p.m.: Women - Russia's Svetlana Zakharova and Margaret Okayo of Kenya are running side by side after Zakharova had fallen back.
Men - About 10 men are bunched at the head of the men's race; among them are last year's winner, Rodgers Rop of Kenya, as well as his countryman Benjamin Kosgei Kimutai.
Women's Wheelchair - Cheri Blauwet of California and Christina Ripp of Illnois are leading the women's wheelchair race with less than four miles to go; Edith Hunkeler of Switzerland lost ground on Heartbreak Hill.

1:25 p.m.: About 10 men are bunched at the head of the men's race; among them are last year's winner, Rodgers Rop of Kenya, as well as his countryman Benjamin Kosgei Kimutai. Svetlana Zakharova of Russia has opened a 10- to 15-yard lead over Margaret Okayo of Kenya in the women's race. Cheri Blauwet of California and Christina Ripp of Illnois are leading the women's wheelchair race with less than four miles to go; Edith Hunkeler of Switzerland lost ground on Heartbreak Hill.

1:15 p.m.: Ernst Van Dyk of South Africa has won his second consecutive Boston Marathon in the men's wheelchair race with a time of 1:28:32. The course record is 1:21:23, set by Heinz Frei of Switzerland in 1994.

1:10 p.m.: Svetlana Zakharova of Russia is opening up a larger lead in the women's race and is running at a 2:24 pace. Margaret Okayo of Kenya is in second place as Marla Runyan and Lyubov Denisova have dropped back.

1:05 p.m.: The women's wheelchair racers are approaching the Newton hills with Edith Hunkeler still in the lead. Among female runners, Margaret Okayo of Kenya and Svetlana Zakharova of Russia are running side by side at Mile 12; Marla Runyan and Lyubov Denisova have dropped back slightly.

1 p.m.: Four elite female runners are bunched at the head of the pack, with Marla Runyan of Oregon slightly ahead of Lyubov Denisova of Russia, Svetlana Zakharova of Russia, and Margaret Okayo of Kenya. Vincent Kipsos has opened up another lead of several yards in the men's race as they draw closer to Mile 12 at Wellesley College. The men are on a 2:11 pace. The course record is 2:07:15, set in 1994 by Cosmas Ndeti of Kenya.