| Competition: | 109th Boston Marathon |
| Venue: | Boston, United States |
| Dates: | April 18 |
| Men: | Hailu Negussie |
| Men Win Value: | 2:11:45 |
| Women: | Catherine Ndereba |
| Women Win Value: | 2:25:13 |
| Prev: | 2004 |
| Next: | 2006 |
The 2005 Boston Marathon was the 109th running of the annual marathon race in Boston, United States and was held on April 18. The elite men's race was won by Ethiopia's Hailu Negussie in a time of 2:11:45 hours and the women's race was won by Kenya's Catherine Ndereba in 2:25:13.
| Position | Athlete | Nationality | Time | |
|---|---|---|---|---|
| 1 | Hailu Negussie | 2:11:45 | ||
| 2 | Wilson Onsare | 2:12:21 | ||
| 3 | Benson Kipchumba Cherono | 2:12:48 | ||
| 4 | Alan Culpepper | 2:13:39 | ||
| 5 | Robert Kipkoech Cheruiyot | 2:14:30 | ||
| 6 | Timothy Cherigat | 2:15:19 | ||
| 7 | Benjamin Kipchumba | 2:15:26 | ||
| 8 | Andrew Letherby | 2:16:38 | ||
| 9 | Mohamed Ouaadi | 2:16:41 | ||
| 10 | Peter Gilmore | 2:17:32 |
| Position | Athlete | Nationality | Time | |
|---|---|---|---|---|
| 1 | Catherine Ndereba | 2:25:13 | ||
| 2 | Elfenesh Alemu | 2:29:51 | ||
| 3 | Bruna Genovese | 2:29:51 | ||
| 4 | Svetlana Zakharova | 2:31:34 | ||
| 5 | Madina Biktagirova | 2:32:41 | ||
| 6 | Lyubov Morgunova | 2:33:24 | ||
| 7 | Shitaye Gemechu | 2:33:51 | ||
| 8 | Zhor El Kamch | 2:36:54 | ||
| 9 | Mina Ogawa | 2:37:34 | ||
| 10 | Nuța Olaru | 2:37:37 |