<p class="ingestion featured-caption">Ray Zahab (right) achieves what many would consider unthinkable. Here he is standing in Death Valley when it's 123 degrees Fahrenheit.Kent Keeler</p><ul class="summary-list"><li>Ray Zahab ran over 105 miles through California's Death Valley during its hottest month on record.</li><li>Zahab has traversed over 10,000 miles across Earth's deserts but said this trip was personal.</li></ul><p><em>This as-told-to essay is based on a conversation with Ray Zahab, a 55-year-old Canadian explorer and ultra-distance runner who has traversed nearly 12,400 miles across Earth's most extreme environments, from the Arctic to the Sahara. It's been edited for length and clarity.</em></p><p>July was the hottest month in <a target="_blank" href="https://www.businessinsider.com/life-in-death-valley-one-of-hottest-places-on-earth-2020-8">Death Valley</a> National Park's recorded history. It's also when I ran over 100 miles through the scorching desert heat.</p><p>I endured daily highs that exceeded <a target="_blank" href="https://www.businessinsider.com/extreme-heat-tourists-death-valley-record-temperature-summer-heatwaves-2023-8">120 degrees Fahrenheit</a> during my 53.5-hour journey from Death Valley's northern border in the mountains down to Badwater Basin, the lowest point in North America.</p><p>I was well prepared from <a target="_blank" class href="https://www.instagram.com/rayzahab/?hl=en">multiple adventures </a>in Death Valley, and I respected the National Park Service's "extreme summer heat" warnings, meeting with park rangers in advance and sharing my plans with them.</p><p>I knew the journey would push my <a target="_blank" href="https://www.businessinsider.com/tourists-visit-death-valley-during-dangerous-heatwave-2023-7">body to the limit</a>, navigating Death Valley's mountains, sand dunes, salt flats, and ankle-twisting rock-strewn river beds, almost entirely alone and off-road.</p><p>It wasn't the first time I've run across Death Valley, but this trip was more personal. I was diagnosed with a type of blood cancer a few years ago and knowing that I could get out there and do something like this after recovering from chemo was empowering.</p><p>There were times when I doubted I could finish and times when I knew I had to rest. Here's what it was like to run through California's Death Valley during its hottest month ever.</p>