August 10, 2025
Registration is Open!
As the shortest race in the Leadville Race Series, the Leadville 10K Run offers runners a unique opportunity to experience the magic of Leadville from a less intimidating distance. Cast against Leadville’s breathtaking mountain backdrop, the 10K crosses the same gravel roads as the infamous LT100 RUN course, covering the first and final 3.1 miles of the Race Across the Sky. Dip your toes in the magic and step into the warm embrace of the Cloud City community — you’ll never look back.
Registration is open!
Event Pricing:
- General Registration | $65
Minimum Age:
- 12+ on Race Day
2025 deferral deadline: 8/7/25
Please see our deferral policies page for complete information on deferrals.
From the very beginning, volunteers have made the Leadville Race Series possible. We truly appreciate all that our great volunteers do to make our races run smoothly and to make the racers’ experience unforgettable. If you are going to be in town for the Leadville Trail 10k, we would love for you to join the family and pitch in.
Thanks in advance for your help — we couldn’t do it without you!
Head on over to our Volunteer information page for more info on how to sign up!
2025 RACE WEEK RUNDOWN
Sunday
- 7:00am – 9:00am Leadville Trail 10k Packet Pick-Up
- 9:00am Leadville 10k START and FREE Kids Dash
- Location: Corner of 6th St & Harrison
- 11:30am Awards
This out-and-back course uses the first and last 3.1 miles of the LT100 Run course, featuring paved and dirt roads.
- 6.2 miles / 10k
- GPX / Interactive Map
- 475′ Elevation Gain
- 9,734′ Lowest Point
- 10,135′ Highest Point
Aid Station
There will be one aid station provided at the turnaround mark, as well as liquids on the Courthouse lawn.
- Aid Station offerings: Water, Neversecond energy gel and high-carbohydrate beverage mix, Skratch Labs hydration, bars and chews, and assorted foods including bananas, figs, pretzels, chips, coke products, etc.
Note:
- Due to safety restrictions on the course wheelchair participation is not permitted.
- Roads will not be fully closed to vehicle traffic, be careful at intersections.
Train with what you’ll use on Race Day! You can find the following products at aid stations for all Leadville Race Series Events:
Neversecond – Energy Gels and High-Carbohydrate Sports Drink
Here’s what you’ll find on course:
C60 High-Carbohydrate Sports Drink – Citrus and Unflavored – A mix of C30 formula to provide a 60 gram offering
C30 Energy Gels – Citrus, Passion Fruit, and Orange
C30+ Energy Gels (caffeinated) – Cola and Berry
There is a lot of mixed information when it comes to eating or drinking in the last hour before competition. Taking in some carbohydrate may help, because it provides extra fuel that may be needed, especially during longer events. However, it can also result in so called rebound hypoglycemia or reactive hypoglycemia with symptoms of weakness, dizziness and nausea. So, it can have positive as well as negative effects? What should we do? This blog will give you the ins and outs.
Skratch Labs – Hydration Mix, Energy Bars & Chews
Skratch Labs is proud to support this year’s athletes with on-course hydration and energy that helps you perform and tastes great—no gut bombs, no gimmicks.
💧 Sport Hydration Drink Mix – Lemon + Lime, Strawberry + Lemonade, Raspberry Limeade
🍫 Energy Bars – Peanut Butter + Chocolate, Cinnamon + Oatmeal
🍬 Energy Chews – Lemon + Green Tea, Sour Cherry, Grape
Awards will be given to overall gender and age group top finishers and handed out during the awards ceremony.
Age Group Awards (3 deep per category)
- 19 and under Men / Women
- 20-29 Men / Women
- 30-39 Men / Women
- 40-49 Men / Women
- 50-59 Men / Women
- 60-69 Men / Women
- 70+ Men / Women
- Non-binary Open
- Overall Male
- Overall Female
- Para Male Overall
- Para Female Overall
Age group awards will be based on the age an athlete will be on RACE DAY.
2024
Timing Split SMS Updates – In order to get SMS updates when an athlete crosses a timing split, please visit this link to sign up for alerts.
Note – due to back country terrain, there may be lag time on SMS alerts based on cell signal availability.
Past results are available HERE
Check out our Visit Leadville page for all lodging, amenities, and things to do while you’re in town!
Leave No Trace | Do Leadville-Twin Lakes Right
The Leadville Race Series will directly hold and mirror the 7 principles already established and in place via the US Forest Service. Learn more here:
Learn how to do Leadville Twin Lakes right
Care for Colorado Leave No Trace Principles
Plan Ahead + Pack Smart
- Know the Course – Study the route, aid stations, portapotty locations, and terrain before race day.
- Pack Light + Right – Bring only what you need (hydration packs, snacks, gear); choose reusable or biodegradable gear.
- No Littering – Be prepared to deposit waste at Zero Waste Stations throughout the course. Intentional littering on the course will be grounds for disqualification.
Camp with Care
- Know Your Options – From dispersed sites to RV parks, plan and book early. Check if CMC offers event-specific camping.
- Dispersed = Primitive – First-come, first-served camping on public lands. No services provided. Camp 100+ feet from water and follow fire rules.
- Self-Reliance is Key – No bathrooms, no trash service. Pack it in, pack it out. Stop by the Visitor Center for pet waste bags.
Bathroom Rules
- Use Portapotties – Provided along the course and at aid stations. No exceptions. LRS is offering expanded portapotty options in 2025 and beyond.
- Backcountry Emergencies – Dig a 6″ hole 200 feet from water. Penalties apply for non-compliance. Carry a WAG bag for TP and hygiene items.
Respect the Land
- Historic Sites Matter – Crews are no longer allowed at the Twin Lakes Forest Service site due to past damage.
- Leave What You Find – Don’t move or take natural or cultural objects.
Fire Safety
- Check Restrictions – Before lighting any campfire, confirm local fire bans.
- Keep it Small + Cold – Never leave fires unattended. Fully extinguish with water until cold to the touch.
- Buy Local Firewood – Available at ACE or Big R in Leadville. Don’t import pests.
Wildlife Awareness
- Bear Smart – Keep food, trash, and scented items in bear-proof containers or locked vehicles.Twin Lakes has issues with trash attracting bears.
Respect the Locals
- Be Courteous – Don’t block driveways, urinate in private yards, or disrespect residents. Your behavior reflects on the entire race.
Check out our Official Rules page to familiarize yourself with all policies that ensure a fair and safe experience for all.
Unlock your full potential with our coaching partner Boundless Coaching, specializing in personalized endurance training for athletes of all levels. Boundless Coaching provides one-on-one guidance tailored to your unique goals and schedule. Whether you’re aiming to complete your first race or conquer a 100-mile+ mile distances, the Boundless Coaching team is dedicated to helping you succeed.
Colorado Mountain College will offer camping during the 100 MTB/10K weekend.
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Camping registration will open on March 15th at 12pm MST.
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Reservations are for Thursday – Sunday with showers, restrooms, and water.
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All proceeds go to the CMC XC/Track team.
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For more info, please visit the registration link below.
We thank our sponsors for making the Life Time Leadville Trail 10k presented by La Sportiva possible. Whether local or national, we ask our participants and fans to look to these sponsors first for the services or products they provide. We truly could not host these amazing events without all of them. Our most sincere thanks to all!