Jeroen van Bergen<p>Altitude by itself should not be that much of a problem. I lived in Denver CO in 1996 and used my mountain bike to commute ( weather permitting). I do not recall the altitude being a problem at all. <a href="https://mstdn.social/tags/DenverCO" class="mention hashtag" rel="tag">#<span>DenverCO</span></a> <a href="https://mstdn.social/tags/MountainBike" class="mention hashtag" rel="tag">#<span>MountainBike</span></a> <a href="https://mstdn.social/tags/Commute" class="mention hashtag" rel="tag">#<span>Commute</span></a> <a href="https://mstdn.social/tags/WeatherPermitting" class="mention hashtag" rel="tag">#<span>WeatherPermitting</span></a></p>