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Course & Elevation
The Portland Half Marathon is run on the first Sunday of October as part of the Portland Marathon weekend, alongside a marathon and a 10K. It starts at 7:00 on Salmon Street between SW 3rd and 4th Avenues, next to Waterfront Park on the Willamette River, and finishes at Waterfront Park. The route follows the marathon route west on Salmon Street to Lownsdale Square, then north on SW 4th Avenue through downtown. After crossing Burnside Street it loops through Chinatown and returns to Naito Parkway via Davis Street. It then runs south on Naito Parkway, directly under the Portland Aerial Tram, to the South Waterfront and Macadam Avenue. With just over a mile to go the route crosses the Willamette on the Burnside Bridge, heads towards the White Stag sign, and makes a final loop of Old Town before the finish. The start and finish are 36 feet above sea level, and the highest point of the course is 178 feet. The time limit is 6 hours 33 minutes, based on a pace of 30 minutes per mile.
Weather
Typical climate for the race month — an estimate, not a forecast or a race-day record
Early October in Portland is mild and damp: highs average about 18°C and lows about 8°C, with measurable rain on around thirteen days of the month.
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Fun Facts
- ▸ The half marathon starts at 7:00, fifteen minutes before the marathon and 10K.
- ▸ The time limit is set at a 30-minute-per-mile pace, which the organisers call a leisurely walking pace.
- ▸ Nearly 12,000 runners took part in the 2025 Portland Marathon weekend across all its races.
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