Course format
City course with a big mid-race hill
RacesReviewed / Race Intelligence
2026 Shamrock Run Fest presented by Toyota
The Shamrock Half Marathon Run Fest presented by Toyota is a celebration of fitness, community, and Irish culture, and it has been a Portland tradition since 1979.
RegisterOpen signupactive.comWebsiteOfficial race siteshamrockrunportland.comLocationPortland, ORRace start area
Choose your distance
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Elevation profile
4 ft net up
Pressure point
Mid-race climb
Weather bias
Usually weather-dragged
Free training plan
Build a free Half marathon plan for this race.
Keep race research first. When you want it, open a quick planner that uses the selected distance, the selected race date, and the course itself.
Course Profile
2026 Shamrock Run Fest presented by Toyota Half marathon course profile
This course section is built from a mapped route and elevation profile so you can understand how the race is likely to run.
Synced course focus
Half marathon checkpoint 2
Mile 3.4 · 33 ft · Built from the stored course profile in Supabase.
Course trace
The route line and elevation chart reflect the selected distance.
Pressure model
Pressure points highlight where pacing or effort may change during the race.
What comes next
Use the course, weather, logistics, and reviews together to build your race-day plan.
Difficulty Meter
Half Marathon race demand
77/100
- Course detail
- Detailed
- Weather detail
- Historical + forecast
- Race-day detail
- Moderate
- Weather view
- Live forecast
Weather read
Strong tailwind assist
Route-aligned wind gives you a quick feel for how the day may race before you dig into the full weather section.
Jump to weather analysisWeather Analysis
2026 Shamrock Run Fest presented by Toyota Half marathon weather outlook
Weather blends the live forecast with the race's historical weather patterns to help you plan.
Route-aligned wind
+4.8 mph
Interpretation
Strong tailwind assist
NOAA race-window forecast is live. Wind is scored relative to the course bearing where possible.
Estimated weather effect
+2.13%
Heuristic read
Major weather drag
Help score
-38
Historical profile
Historically weather-dragged
Based on 7 years of race-weekend weather in the archive.
Tailwind years
57%
Headwind years
43%
Helpful weather
14%
Forecasts use current race-area weather, and history looks at past race-weekend conditions to show what runners have typically faced.
Weather history
2025 race-weekend conditions
Race date
Mar 16, 2025
Avg temperature
46.6F
Avg wind
3.9 mph
Aligned wind
+1.04 mph
Mostly neutral year
+0.00% estimated finish-time effect · 18 hourly observationsStart
79F
Mostly Clear
6.0 mph · NNWMid-course
76F
Mostly Clear
6.0 mph · NFinish
79F
Mostly Clear
6.0 mph · NNWCourse Breakdown
Where the half-marathon tells its story
Active segment
Half rhythm
This is a deterministic pacing band built from the available course trace and race distance.
Race-Day Logistics
2026 Shamrock Run Fest presented by Toyota Half marathon race-day logistics
Race weekend
8 recorded years
The basic race structure is in place for planning.
Distance options
3 distances
This page can show the event correctly even when some race-day detail is still light.
Race-day planning
More details coming
Packet pickup, parking, support flow, and reunion details may still be limited.
Course Map
Route shape, city context, and key course moments in one view.
Map overview
This map follows the available route for the selected distance and stays in sync with the elevation chart.
Highlighted point
Half marathon checkpoint 2
Built from the stored course profile in Supabase.
What to watch
Use this map to spot turns, neighborhoods, and where the race starts to feel different.
Course coverage
Route shape and elevation are available, while aid stations and spectator overlays may still be added over time.
Why it matters
Portland, OR should still be easy to plan around, even when some course details are lighter than others.
Planning
Use the Half marathon at 2026 Shamrock Run Fest presented by Toyota as a planning target rather than a qualification race.
Entry posture
Open entry
There is no qualification signal in the current event record.
Race framing
Half marathon planning
The page emphasizes course, logistics, and weather rather than qualification standards.
Race History
Race history overview
Past editions tracked
8
Recorded race years
ArchiveCurrent route view
Available
Half marathon
CurrentBenchmarks
Growing archive
More historical context will be added here as the archive grows
In progressReview Radar
Runner signal for 2026 Shamrock Run Fest presented by Toyota Half marathon
Course
67/100
Logistics
43/100
Crowd support
100/100
Aid stations
80/100
Finish area
87/100
Recommend
87/100
Common questions
FAQ
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