Why has Leadville banned road handlebar mountain bikes? The racers themselves requested to put an end to them

At the beginning of the year, we learned about one of the most striking technical decisions of the Leadville Trail 100 MTB 2026 that will take place in a few days. The organization prohibited mountain bikes with road or gravel handlebars, and at the time, the measure was mainly explained for safety reasons. But later, we learned more about what happened behind that decision. It was the professional riders themselves who requested the elimination of these configurations, and Keegan Swenson, winner of the last two editions using precisely this type of handlebar, was one of the advocates for the measure.

The Leadville riders themselves requested the ban on road handlebars

The safety argument is particularly interesting after what we saw in the 2025 edition. While road handlebars have been banned for this year, Kate Courtney won Leadville using an even more extreme configuration, installing the shifters directly on her fork to be able to hold onto it in the fast sections, lower her position as much as possible, and improve aerodynamics. From there, she could still shift gears, but obviously did not have immediate access to the brakes.

So, why have road handlebars been banned, and what is really behind this decision?

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The explanation was given by Payson McElveen, one of the riders from the Life Time Grand Prix, after seeing the huge discussion that the regulatory change had generated.

As McElveen explained in a post on his social media, during the past autumn (2025), a meeting was held between some of the riders of the Life Time Grand Prix and the organizers. Among the various proposals raised was the possibility of eliminating road handlebars in Leadville, and according to his account, the measure had almost unanimous support among the cyclists present.

This is an important detail because it significantly changes the initial interpretation of the ban. It was not simply Life Time trying to limit technical innovation or impose a rule similar to those we can find in races regulated by the UCI. Leadville is not a UCI event and has its own rules. In this case, it was the professionals themselves who deemed it appropriate to set a limit. And one of them was precisely the one who had benefited the most from this type of bike.

Keegan Swenson won Leadville in 2024 and did it again in 2025 using an MTB with a curved handlebar. What initially might have seemed like a technical extravagance had proven to be a perfectly competitive solution on a course where aerodynamics and efficiency can be of enormous importance.

 

 

 

 

 

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A post shared by Payson McElveen (@paysonmcelveen)

Swenson raised a problem that went beyond safety: not everyone can afford a specific bike for Leadville

McElveen asserts that it was Swenson himself who introduced the issue of equality among riders into the conversation.

Properly adapting a mountain bike to a road handlebar is not just about changing one part. As McElveen explains, getting the position to work often requires using a different frame and going down a size, which practically forces one to have additional equipment.

For riders with more support or greater resources, this may be manageable. For other participants, especially young ones trying to make a name for themselves among professionals, it poses an added difficulty.

The problem arises when an innovation stops being an occasional solution and starts becoming a necessity to compete on equal terms. After two consecutive victories by Swenson with this type of configuration, the curved handlebar had already proven that it was not just a curiosity.

The riders' concern was that Leadville could end up generating a small arms race, where having a bike specifically developed for this event would become practically a requirement to fight for victory.

It is particularly significant that this argument came from Swenson, precisely the cyclist who had demonstrated the advantages of the configuration on the ground.

Different handlebars within a group at over 60 km/h

Material equality was not the only argument. McElveen explains that the riders also debated what it means to mix bikes with flat handlebars and road handlebars within the same group traveling at high speed.

According to him, there was considerable agreement that having different shapes and widths of handlebars within a peloton that can travel at about 64 km/h before entering a narrowing was not exactly the most advisable situation.

They added another factor. That the configurations of the professionals could be transferred to the rest of the amateur peloton. And in that sense, Leadville has to establish the same rules for a large group of participants with very different technical levels, experience, and resources.

But then Kate Courtney's configuration comes into play

This is precisely where the ban opens an interesting debate. Leadville has decided to eliminate MTBs with road handlebars after the riders themselves raised, among other things, issues related to safety, but just a year earlier, Kate Courtney took the search for an aerodynamic position much further.

The American won the 2025 edition with a configuration that we already analyzed in Brújula Bike. Courtney maintained a conventional handlebar but had installed the shifters directly on the fork.

The reason was to be able to hold onto the fork itself and adopt an extremely low and aerodynamic position without losing the ability to shift gears.

From an efficiency standpoint, it made sense in certain sections of Leadville. From a bike control perspective, it is much more striking because while she kept her hands in that position, she could not immediately operate the brakes.

And, with the information available, no equivalent prohibition specifically targeting this type of configuration has been communicated.

This leaves a peculiar situation: a handlebar that keeps the controls and brakes integrated is out of Leadville, while we have no record of a specific rule preventing one from holding directly onto the fork as Courtney did in 2025.

This does not mean that both situations are exactly equivalent or that the ban on curved handlebars is without merit. The arguments raised by McElveen also include the coexistence of different handlebars within large groups and the equality of access to equipment. But Courtney's precedent demonstrates how complicated it is to set limits on innovation when aerodynamics has become such an important factor in this race.

Leadville 2026 will take place on August 15

We won't have to wait long to see the consequences of the change. The Leadville Trail 100 MTB 2026 will be held on August 15.

The race began in 1994 with 150 participants and has become one of the most prestigious endurance MTB events in the world. Its approximately 100 miles of course and about 12,000 feet of positive elevation also take place at an exceptional altitude, reaching around 12,600 feet above sea level at Columbine Mine.

But precisely the characteristics of its course explain a good part of the technical debate of recent years. Leadville is a mountain bike race where there are numerous sections where speed, efficiency, and aerodynamics can be decisive, and this has led professionals to explore solutions increasingly distant from the traditional configuration of an MTB.

In 2026, road handlebars already have a red line marked. What will be interesting is to see what new solutions the riders find to continue gaining aerodynamics without crossing it.

Because if Swenson with his drop handlebars and Courtney holding directly onto the fork demonstrated anything, it is that as long as the Leadville course continues to reward efficiency so much, the search for an ever faster position will hardly end with the prohibition of one type of handlebar.