Races Half marathon · Longmont, USA
Longmont Half Marathon
Longmont Half Marathon is a flat half marathon in Longmont, USA, held each May. Starts and finishes at Sandstone Ranch Park and runs entirely on concrete paths with a few wooden footbridges. The route passes its aid stations six times in total, so parts of it are covered twice. Early May mornings along the Front Range are usually cool, roughly 3 to 15°C at the 07:30 start, with a chance of rain or late snow. The Longmont Half Marathon's flat profile means your pacing discipline, not the terrain, decides the day.
Page rebuilt 2026-11-14 · race facts not independently verified — confirm dates and entries on the official race site
When
May
next: Sunday 2 May 2027
Course
flat
Half marathon
Conditions
Early May mornings along the Front Range are usually cool, roughly 3 to 15°C at the 07:30 start, with a chance of rain or late snow.
Racing this course well
Starts and finishes at Sandstone Ranch Park and runs entirely on concrete paths with a few wooden footbridges. The route passes its aid stations six times in total, so parts of it are covered twice.
The Longmont Half Marathon's flat profile means your pacing discipline, not the terrain, decides the day.
Getting a place
- How you get in
- Open entry: first come, first served
- Price
- $64 including fees (2027 race)
Official Longmont Half Marathon site →Checked November 2026
Race day
- Next race
- Sunday 2 May 2027
- Start time
- 07:30
- Time limit
- 3 hours 10 minutes
- Also on the day
- 5k
The course in numbers
- Surface
- 100% concrete, with some wooden composite footbridges
Worth knowing
- Runners who need more time can use a 06:30 early start.
- The finish is cup free, with refill coolers at the expo.
- Every registrant receives a hoodie and finishers get a medal.
Pick your goal for Longmont
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 Longmont 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 Longmont Half Marathon?
- The next Longmont Half Marathon is on Sunday 2 May 2027 in Longmont, USA. It is held each May.
- Is the Longmont Half Marathon course flat?
- Starts and finishes at Sandstone Ranch Park and runs entirely on concrete paths with a few wooden footbridges. The route passes its aid stations six times in total, so parts of it are covered twice.
- How do I enter the Longmont Half Marathon?
- Open entry: first come, first served. Price: $64 including fees (2027 race).
- How should I train for the Longmont Half Marathon?
- Build for the course you'll actually race at the Longmont Half Marathon: flat terrain, May conditions. RunV Premium builds a training plan around your goal time and race date, and lets you adapt it when life interrupts the Longmont build.
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 Longmont — around your actual life
RunV engineers your block backwards from race day in May — and adapts it when training doesn't go to script. You approve every change.
