Longmont Half & 5k (LM Half) banner
Longmont Half & 5k (LM Half) logo

Longmont Half & 5k (LM Half) 2027

Date
Sunday, May 2, 2027
Start time
7:30 AM start (Denver)
Entry fee
From $39 · goes up to $69 on Feb 1, 2027
Included with entry
Includes a hoodie or sweatshirt
Fundraising
Takes optional donations when you register
Register on RunSignup

Registration is open.

We earn a small commission when you register through this link, at no cost to you. Details

Add to calendar: Apple or Outlook · Google

Events and entry fees

EventDistanceWhenEntry feeCap
Half MarathonHalf MarathonMay 2, 20277:30 AM$64$69 after Feb 1, 2027–
5k5KMay 2, 20278:30 AM$39$44 after Feb 1, 2027–

Entry fees exclude processing fees. Prices and dates come from the race's registration page and refresh nightly.

Register on RunSignup

The Half Marathon fee goes up to $69 on Feb 1, 2027.

Race day planning

Entry fee schedule

  • Half Marathon: $64 until Feb 1, then $69 until Apr 2, then $74 until Apr 25, then $84 until May 1, then $90 until May 2.
  • 5k: $39 until Feb 1, then $44 until Apr 2, then $49 until Apr 25, then $54 until May 1, then $60 until May 2.

Online registration closes May 2, 2027, unless the race fills first.

How the price compares

At $64, entry is about the same as a typical half marathon in Colorado ($60).

What a typical finish looks like

A typical finisher at a half marathon in Colorado runs 2:12:38, about 10:07 a mile, based on 60 races with published results. Women typically finish in 2:19:55 and men in 2:03:31.

Light and altitude

Sunrise on race morning is at about 5:59 AM, and the Half Marathon starts at 7:30 AM. The start sits about 4,920 feet above sea level, high enough that most runners from lower ground run noticeably slower.

Fees exclude processing fees. Comparisons use current entry fees and published results from races nearby.

Start location and course

Sandstone Ranch Park, Longmont, CO 80504

The pin marks the address the race lists, which is usually the start. Course maps are the organizers' own.

Half Marathon

125
finishers
2:11:42
median (10:03 /mi)
1:22:38
winning time
48% / 52%
women / men
median 2:11:421:25:533:09:36
Finish times, fastest to slowest. Each bar is a slice of the field; the dashed line is the median.

5k

120
finishers
35:52
median (11:33 /mi)
18:12
winning time
54% / 46%
women / men

Aggregated from official results (3W Races) for Longmont Half & 5k (LM Half). Individual finisher names are not stored here.

How fast do you need to be at Longmont Half & 5k (LM Half)?

At the 2026 Half Marathon, the fastest tenth finished in 1:47:35 or better, the top quarter in 1:58:48, and half the field in 2:11:42; the last tenth came in after 2:38:59.

At the 2026 5k, the fastest tenth finished in 26:16 or better, the top quarter in 30:57, and half the field in 35:52; the last tenth came in after 54:03.

Third place by age group, 2026 Half Marathon
AgeWomenMen
20-292:04:091:55:12
30-391:42:201:44:07
40-491:55:092:01:31
50-592:15:41n/a
60-69n/a2:09:55

Groups with fewer than five finishers are left out. Awards vary by race; check the race's rules.

What would my time get me?

Where a finish time would have placed in 2026.

Finishers by year

Down 16 percent since 2022.

All events combined, from official results.

Longmont Half & 5k (LM Half) Half Marathon year by year

From 2022 to 2026, the field went from 124 to 125 finishers, and the median time rose from 2:06:07 to 2:11:42.

YearFinishersMedianFastest tenthWinner
2026125 (-16%)2:11:42under 1:47:351:22:38
2025148 (-17%)2:06:56under 1:40:321:21:13
2024178 (+11%)2:11:25under 1:43:511:24:19
2023160 (+29%)2:07:05under 1:38:321:16:15
20221242:06:07under 1:35:531:18:25

From each year's official results for the Half Marathon; virtual options are left out.

How fast is it?

About average for Colorado half marathons

The fastest quarter of the 2026 half marathon field finished under 1:58:48, against 1:56:43 in a typical Colorado half marathon, so times here are about average.

  • 5K: Slower than most Colorado 5Ks. The fastest quarter of the 2026 5K field finished under 30:57, against 29:37 in a typical Colorado 5K, so times here run 5 percent slower.

Compares the fastest quarter of each field, so walkers and first-timers do not skew it. It reflects the course and the field together: a flat course, cool weather, or a competitive crowd all make times faster.

Typical race-day weather

Around May 2 the day usually runs from 39°F at dawn to 67°F in the afternoon, with measurable rain on about 27% of days. Cold snaps dip to 34°F and hot years reach 76°F.

Based on 75 days within a week of the date over the last 5 years, from historical weather for the start area. Not a forecast.

From the race's page

What the organizers of Longmont Half & 5k (LM Half) cover on their registration page, in brief.

Schedule and packet pickup

Advanced Packet Pick Up

There will NOT be an advanced packet pick up for the 2026 Longmont Half. You can pick up your race bib and swag on the morning of the race, May 3rd, starting at 7:00 AM!

Schedule and packet pickup

Location

Sandstone Ranch Park. 3001 CO-119, Longmont, CO 80504. The race expo is located at the Southeast Pavilion of the Park. See map.

Schedule and packet pickup

Race Day Raffle

In conjunction with the Longmont Half and 5k, we will be hosting a food drive for the OUR Center on race morning! Racers that bring FIVE in-kind donations will be entered into an exclusive race day raffle for prizes from 3W Races and our…

Schedule and packet pickup

Race Day Schedule

6:30 AM — Early Start for Half Marathon Walkers/Joggers*. 7:00–8:30 AM — Same-Day Registration & Late Packet Pickup. 7:00–10:40 AM — Race Expo Open. 7:30 AM — Half Marathon Start. 8:30 AM — 5K Start. 9:15 AM — 5K Awards. 9:30 AM — Half…

Course

Course Info/Maps

Start/Finish Locations: Sandstone Ranch Park. 3001 CO-119, Longmont, CO 80504. The race expo is located at the Southeast Pavilion of the Park. See map below…

Course Info/Maps, from the Longmont Half & 5k (LM Half) page

Parking and travel

Parking/Driving Instructions

DRIVING/PARKING DIRECTIONS: See a google map with driving directions HERE. Keep reading for some landmarks to follow! PREFERRED PARKING OPTION: As you approach the park from Main Street in Longmont, you'll travel EAST on Hwy 119 (also…

Full details on the race's RunSignup page

Race details

Where
Sandstone Ranch Park, Longmont, CO 80504Map
Course
Road
Start elevation
About 4,920 feet
Included with entry
sweatshirt - Unisex Sizes
Donations
Accepted when you register
Distances
5K, Half Marathon
Editions
2027 (May 2, 2027), 2026 (May 3, 2026), 2025 (May 4, 2025), 2024 (Jul 4, 2024), 2023 (Jul 4, 2023), 2022 (Jul 4, 2022)

Organize this race? Add details or a correction

Plan your race

Quick answers

When is Longmont Half & 5k (LM Half)?
Sunday, May 2, 2027, starting at 7:30 AM.
How much does it cost?
Entry starts at $39 before processing fees, and rises to $69 on Feb 1, 2027.
When does registration close?
Online registration closes May 2, 2027, unless the race fills first.
Is the entry fee high for Colorado?
At $64, entry is about the same as a typical half marathon in Colorado ($60).
Do runners get a shirt or medal?
Entry includes a hoodie or sweatshirt, according to the race's registration page. Check it for sizes and whether kids' races get the same.
Can I donate to a cause when I register?
Yes. The registration form offers an optional donation, usually for the charity or nonprofit the race supports. The race's own page names the cause.
What distances can I run?
5K, Half Marathon.
How big is it, and how fast?
In 2026, 125 runners finished the Half Marathon; the median finish was 2:11:42 and the winner ran 1:22:38.
Is it a fast course?
The fastest quarter of the 2026 half marathon field finished under 1:58:48, against 1:56:43 in a typical Colorado half marathon, so times here are about average.
Where does it start?
Sandstone Ranch Park, Longmont, CO 80504.
Is there a course map?
Yes, the organizers publish the route on MapMyRun; the link is under Start location and course.

From the organizers

Longmont's only Half Marathon - now offered in the cooler month of MAY! Join the Half Marathon or 5k distance! Walkers and Runners of all abilities welcome!