Portland Marathon
Portland Marathon race day weather
Cool conditions, steady pace recommended
Runners will face a temperature rise from 48°F at the start to 57°F by the finish, with light humidity at 68%. With max wind around 5 mph, it will be a non-factor for performance. Runners should maintain a steady pace and stay hydrated, especially on the gently rolling terrain where the temperature will gradually increase. The early phases of the race will be comfortable, but adjustments may be necessary as the day warms.
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Portland Marathon route and elevation
The Portland Marathon course has about 890 ft (271 m) of climbing and 914 ft (279 m) of descent, a net drop of about 24 ft (7 m). It is hillier than 80% of the marathon courses racecast.io has mapped, measured by what the hills cost in time. The hardest mile is mile 13, with 117 ft (36 m) of climbing.
Biggest climbs
- Miles 1.4 to 2.4: climbs about 145 ft (44 m).
- Miles 8.1 to 9.2: climbs about 115 ft (35 m).
- Miles 12.1 to 12.9: climbs about 115 ft (35 m).
What the hills cost
- 3:30 on a flat course is about 3:32 here (2 minutes slower).
- 4:00 on a flat course is about 4:02 here (2 minutes slower).
- 4:30 on a flat course is about 4:33 here (3 minutes slower).
Hills only, priced mile by mile on the course map. The pace calculator above adds the race-day weather.
Even-effort splits for a 3:30, 4:00 or 4:30 finish
| Mile | Climb | Descent | 3:30 | 4:00 | 4:30 |
|---|---|---|---|---|---|
| 1 | 4 ft | 22 ft | 7:51 | 8:59 | 10:06 |
| 2 | 66 ft | 7 ft | 8:26 | 9:38 | 10:51 |
| 3 | 96 ft | 64 ft | 8:13 | 9:23 | 10:33 |
| 4 | 16 ft | 74 ft | 7:42 | 8:48 | 9:55 |
| 5 | 1 ft | 36 ft | 7:48 | 8:55 | 10:01 |
| 6 | 80 ft | 26 ft | 8:24 | 9:36 | 10:48 |
| 7 | 21 ft | 75 ft | 7:44 | 8:50 | 9:56 |
| 8 | 6 ft | 5 ft | 7:57 | 9:05 | 10:13 |
| 9 | 94 ft | 6 ft | 8:41 | 9:55 | 11:10 |
| 10 | 35 ft | 97 ft | 7:42 | 8:48 | 9:54 |
| 11 | 18 ft | 31 ft | 7:53 | 9:01 | 10:09 |
| 12 | 35 ft | 9 ft | 8:10 | 9:20 | 10:29 |
| 13 | 117 ft | 67 ft | 8:21 | 9:33 | 10:45 |
| 14 | 2 ft | 57 ft | 7:43 | 8:50 | 9:56 |
| 15 | 9 ft | 21 ft | 7:54 | 9:01 | 10:08 |
| 16 | 91 ft | 8 ft | 8:38 | 9:52 | 11:07 |
| 17 | 12 ft | 12 ft | 7:57 | 9:04 | 10:12 |
| 18 | 31 ft | 46 ft | 7:52 | 9:01 | 10:08 |
| 19 | 55 ft | 50 ft | 7:59 | 9:07 | 10:16 |
| 20 | 6 ft | 50 ft | 7:46 | 8:52 | 9:59 |
| 21 | 24 ft | 41 ft | 7:52 | 9:00 | 10:07 |
| 22 | 39 ft | 20 ft | 8:06 | 9:15 | 10:24 |
| 23 | 49 ft | 76 ft | 7:50 | 8:57 | 10:04 |
| 24 | 19 ft | 43 ft | 7:50 | 8:58 | 10:05 |
| 25 | 29 ft | 37 ft | 7:55 | 9:02 | 10:10 |
| 26 | 40 ft | 34 ft | 7:58 | 9:07 | 10:16 |
| Last 0.2 | 3 ft | 0 ft | 1:48 | 2:03 | 2:18 |
Explore the Portland Marathon course with the weather and your pace along the route, or compare it with other races.
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A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.
About the Portland Marathon
The Portland Marathon is held on the first Sunday of October in Portland, Oregon. It offers a full marathon (42.195 km / 26.219 mi), a half marathon (21.098 km / 13.110 mi), and a 10K. The course starts and ends at Tom McCall Waterfront Park at Salmon Street and Naito Parkway, crossing the Willamette River four times and passing through downtown, the Pearl District, and other Portland landmarks. The marathon is a USATF-certified Boston qualifier, and the 2026 race drew nearly 15,000 participants across all events. Wikipedia
