Races Half marathon · West Sacramento, USA
Shamrock'n Half Marathon
Shamrock'n Half Marathon is a flat half marathon in West Sacramento, USA, held each March. A loop from the ballpark in West Sacramento. Most of it is flat. The noticeable climbs are bridges and overpasses, and a bike path section in the middle can feel narrow. March mornings in Sacramento are cool and can be showery, around 7 to 17°C. On a course as flat as Shamrock'n Half Marathon, even splits are everything; the classic mistake is banking time in the first third.
Page rebuilt 2026-11-14 · race facts not independently verified — confirm dates and entries on the official race site
When
March
next: Sunday 14 March 2027
Course
flat
Half marathon
Conditions
March mornings in Sacramento are cool and can be showery, around 7 to 17°C.
Racing this course well
A loop from the ballpark in West Sacramento. Most of it is flat. The noticeable climbs are bridges and overpasses, and a bike path section in the middle can feel narrow.
On a course as flat as Shamrock'n Half Marathon, even splits are everything; the classic mistake is banking time in the first third.
Getting a place
- How you get in
- Open entry: first come, first served
- Price
- From $86.95, rising to $145.53 in race week (2027 race)
Official Shamrock'n Half Marathon site →Checked November 2026
Race day
- Next race
- Sunday 14 March 2027
- Start time
- 07:45
- Time limit
- 4 hours
- Pacers
- Pace groups from 1:25 to 2:30
- Also on the day
- 10k, 5k
The course in numbers
The bike path between roughly 6 km and 14 km (miles 3.8 to 9) is the narrowest part. Bridges and overpasses give the only real climbs.
- Layout
- Loop
- Total climb
- 90 m (300 ft)
Worth knowing
- The finish is on the warning track of the ballpark.
- A Double Header option pairs a Saturday 5K or 10K with the Sunday half.
Pick your goal for West Sacramento
Pace charts, weekly structure and timelines for the most common half marathon goals:
The date shown is the one the organiser has announced. Change it if yours differs.
Build your training around Shamrock'n Half Marathon.
RunV works backwards from race day to today. Your plan adapts when life interrupts, and you approve every change. It does not adapt to this specific course — the pacing guidance above is where the course knowledge is.
Everything above stays free and complete — this is an optional next step, not a paywall.
Asked often
- When is the Shamrock'n Half Marathon?
- The next Shamrock'n Half Marathon is on Sunday 14 March 2027 in West Sacramento, USA. It is held each March.
- Is the Shamrock'n Half Marathon course flat?
- A loop from the ballpark in West Sacramento. Most of it is flat. The noticeable climbs are bridges and overpasses, and a bike path section in the middle can feel narrow.
- How do I enter the Shamrock'n Half Marathon?
- Open entry: first come, first served. Price: From $86.95, rising to $145.53 in race week (2027 race).
- How should I train for the Shamrock'n Half Marathon?
- Train specifically for West Sacramento — terrain, conditions, goal pace — and let the plan flex around real life. With RunV Premium you can adapt your plan to fit your week.
Not sure what to target? Predict your half marathon time from a recent race →
More half marathon races
Supplements research for this distance
Build for West Sacramento — around your actual life
RunV engineers your block backwards from race day in March — and adapts it when training doesn't go to script. You approve every change.
