The Leadville Trail Marathon is 26.4 miles of out-and-back dirt roads and single track that takes you through the historic mining district on the east side of Leadville. The Heavy Half consists of 15.46 miles along the same path as the marathon minus the Ball Mountain section. The course is primarily on old mining roads and trails, topping out at 13,185 feet at Mosquito Pass. This is the HIGHEST continuous pass in the country and the highest trail Marathon in the USA! There is a chance you’ll see snow on the course. The courses will be well marked with fluorescent pink-and-black striped ribbon and flour arrows on the ground.

There will be three well-supplied aid stations for the Heavy Half and seven aid stations for the Trail Marathon.

Heavy Half Aid Locations

• Resurrection 4.5 Miles
• Mosquito Pass 7.75 Miles
• Resurrection 11 Miles
• FINISH 15.5 Miles

Marathon Aid Locations

• Adelaide 2.6 Miles
• Adelaide 7.7 Miles
• Resurrection 10.7 Miles
• Mosquito Pass 13.7 Miles
• Resurrection 17.2 Miles
• Adelaide 20.1 Miles
• Adelaide 23.9 Miles
• FINISH 26.2 Miles

Heavy Half Course Cutoffs:

• Resurrection Inbound: 1:15pm
• Full Course: 4:00pm

Marathon Course Cutoffs:

• Adelaide Outbound:  9:15am
• Resurrection Inbound: 1:15pm
• Full Course: 4:00pm

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

Skratch Labs – Hydration Mix, Energy Bars & Chews

We recognize crews as a critical component to all of our events. Our courses cover open roads and trails and careful consideration must go into how and where crews can access their athletes. A conscious plan around this is a foundation of our partnership with the community, USFS, BLM, City of Leadville and Lake County officials to ensure we are providing a safe event experience to everyone involved.

To support local community impacts and maintain safety on public roads, the only areas where crew and and spectators are allowed on course are:

1. Start/Finish Area
2. Resurrection Aid Station

Resurrection Aid Station can be accessed in TWO ways:

1. Driving from the community lots to Resurrection Aid via 7th St. Please use the map linked below and DO NOT drive on the course.
2. Crew shuttles will be available from the startline to/from Resurrection Aid Station. Please help us reduce course congestion and plan to use the crew shuttle.

Parking and overall congestion in Leadville will be a crucial topic for everyone this season and for our presence in Leadville moving forward. We know that with your help we can be great stewards of this community for years to come!

All athletes and crews will be required to park at the Community Fields and High School Parking lot and take a shuttle (or run, walk, bike) to the start line. There will be NO parking at the startline.

Shuttle schedule:

The map below outlines parking locations and shuttle pickup spots. The shuttle locations are under 1 mile from the race start and will run efficiently and quickly to get you to where you need to be! 

Awards Age group and overall awards will be distributed to the top competitors at the awards ceremony at 4:30 PM at the Expo.

Awards will be distributed in the following categories for both the Leadville Trail Marathon as well as the Heavy Half:

• Top 3 Overall Male
• Top 3 Overall Female
• Top 3 Para Male
• Top 3 Para Female
• Top 3 Non-Binary
• Top 3 age group male/female
  • 19-under
  • 20-29
  • 30-39
  • 40-49
  • 50-59
  • 60-69
  • 70+

Age group awards will be based on the age an athlete will be on RACE DAY.

Overall podiums will be pulled out from their age categories.

The Life Time Leadville Trail Marathon is a qualifier for the Life Time Leadville Trail 100 Run. 

There are a minimum of 35 LT100 qualifier coins up for grabs at each of the Leadville Race Series qualifier events. 

• Qualifier coins will only be given to athletes who finish the longest distance race. Must be at least 18 years of age on LT100 race day to be eligible.
• Coin winners MUST BE PRESENT at the awards ceremony and claim their entry immediately.
• Coin winners must complete and pay for their registration for the Leadville Trail 100 during the designated time offered. 
• All registration fees for the LT100 are non-transferable, nonrefundable, and subject to the Leadville Race Series deferral policies.

The 35 coins will be distributed based on overall, age group, and division performance, as well as an event lottery at the end of the awards ceremony. 

PERFORMANCE-BASED COIN DISTRIBUTION

The performance based coins will be distributed to the top overall performances, as well as the top performances of each category. The distribution is simple:

• OVERALL: The 1st, 2nd, and 3rd place of the men’s and women’s overalls will each receive a coin. Overall winners will be removed from their respective age groups. Any coin that is not accepted by the overall winners will go into the lottery.
• All remaining categories will receive (1) coin for the top podium spot.
• If an athlete from the age group or division categories elects to not accept their slot, the coin will “roll down” to the next top athlete in their category until accepted.

LOTTERY

• The event lottery is available to all official finishers who completed the longest distance within the official course cutoff time.
• TO ENTER THE LOTTERY: simply put the lottery tear-off tab bearing your unique number from your race plate into the drawing when they are called for after the awards ceremony.
• Names will be randomly drawn in the lottery from all eligible and interested athletes to distribute these coins until none remain.

Visit our LT100 Run Qualification System page for more information

Check out our Official Rules page to familiarize yourself with all policies that ensure a fair and safe experience for all.

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.

​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.

We thank our sponsors for making the Life Time Leadville Trail Marathon & Heavy Half 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!

Check out the updated Prodigio 2—the one shoe built to handle it all, from the rolling gravel roads of Leadville to the steep climb and descent of Mosquito Pass during the Heavy Half or Marathon. Lighter, more breathable, and tuned for confidence on technical terrain, it delivers the ideal balance of cushioning, responsiveness, and stability for big training blocks, race efforts, and everyday miles alike. Whether you’re pushing pace above treeline or settling into the long haul, the Prodigio 2 is designed to keep you flowing smoothly from start to summit.