De Boston Marathon 1998 werd gelopen op maandag 20 april 1998. Het was de 102e editie van deze marathon.
Het sterkst bij de mannen was de Keniaan Moses Tanui; hij kwam als eerste over de streep in 2:07.34. De Ethiopische Fatuma Roba won bij de vrouwen in 2:23.21.
| rang | naam | land | tijd |
|---|---|---|---|
| Moses Tanui | 2:07.34 | ||
| Joseph Chebet | 2:07.37 | ||
| Gert Thys | 2:07.52 | ||
| 4 | Andre Luis Ramos | 2:08.26 | |
| 5 | John Kagwe | 2:08.51 | |
| 6 | Germán Silva | 2:08.56 | |
| 7 | Alejandro Gomez | 2:12.34 | |
| 8 | Tumo Turbo | 2:13.06 | |
| 9 | Jose Ramon Rodriguez | 2:13.12 | |
| 10 | Takayuki Inubushi | 2:13.15 | |
| 11 | Akinori Kuramata | 2:13.53 | |
| 12 | Margarito Zamora | 2:14.05 | |
| 13 | Peter Ndirangu | 2:14.20 | |
| 14 | David Buzza | 2:14.59 | |
| 15 | Andrey Kuznetzov | 2:15.27 |
| rang | naam | land | tijd |
|---|---|---|---|
| Fatuma Roba | 2:23.21 | ||
| Renata Paradowska | 2:27.17 | ||
| Anuța Cătună | 2:27.34 | ||
| 4 | Manuela Machado | 2:29.13 | |
| 5 | Colleen De Reuck | 2:29.43 | |
| 6 | Irina Kazakova | 2:30.44 | |
| 7 | Jane Salumae | 2:31.20 | |
| 8 | Hiroko Nomura | 2:31.58 | |
| 9 | Irina Timofejeva | 2:32.32 | |
| 10 | Aurica Buia | 2:34.17 | |
| 11 | Mary-Lynn Currier | 2:35.18 | |
| 12 | Libbie Hickman | 2:35.37 | |
| 13 | Fusai Okamoto | 2:37.06 | |
| 14 | Cindy Keeler | 2:39.49 | |
| 15 | Yumiko Furuya | 2:40.40 |