Course
Course Map and Profile
The last 2 miles will be added to the map by October 1st! It should be a fast, flatter section.

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| Event | Distance | When | Entry fee | Cap |
|---|---|---|---|---|
| Heavy 15K | 15K | Nov 14, 20267:30 AM | $75$85 after Oct 1, 2026 | – |
| 5K | 5K | Nov 14, 20269:00 AM | $45$50 after Oct 1, 2026 | – |
Entry fees exclude processing fees. Prices and dates come from the race's registration page and refresh nightly.
The 15K fee goes up to $85 on Oct 1, 2026.
Online registration closes Nov 14, 2026, unless the race fills first.
At $75, entry is about 121 percent above a typical 15K in Colorado, which costs $34 right now.
Sunrise on race morning is at about 6:45 AM, and the Heavy 15K starts at 7:30 AM. The start sits about 6,040 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.
2939 N County Rd 31D, Loveland, CO 80538
The pin marks the address the race lists, which is usually the start. The organizers have not shared a course map with us yet.
Around November 14 the day usually runs from 31°F at dawn to 52°F in the afternoon, with measurable rain on about 7% of days. Cold snaps dip to 20°F and hot years reach 65°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.
What the organizers of Lone Tree Reckoning Heavy 15K and 5K cover on their registration page, in brief.
Course
The last 2 miles will be added to the map by October 1st! It should be a fast, flatter section.
Organize this race? Add details or a correction
There’s a new challenge waiting on the trail.
The Lone Tree Reckoning Trail Heavy 15K & 5K is your chance to trade pavement for dirt, take in the scenery, and find out what the trail has in store for you.
Don’t let the views fool you—this course has some personality. Expect a mix of runnable stretches, climbs, changing terrain, and sections that will make you work for that finish. Whether you’re taking on the Trail Half Marathon or the 5K, this is a race built for runners who are ready for a little adventure.
Trail Heavy 15K