Algorithmically finding the longest line of sight on Earth

In plain words

This project uses a Rust and SIMD algorithm to find the longest lines of sight across Earth's terrain. It confirmed that the longest unobstructed view spans 530km between Pik Dankova in Kyrgyzstan and the Hindu Kush in China. An interactive map provides over one billion longest sight lines for any point on the planet. The computation required extensive processing resources and represents an exhaustive geographic visibility analysis.

written from the facts on this page · September 2026

From the sources

With the help of a custom-developed algorithm, CacheTVS , we have exhaustively checked every single view on Earth in search of the coveted longest line of sight on the planet . Based on the method we detail here , we present the greatest view of all: Longest lines of sight tend to group together around peaks and ridges. So the following are more of our own curated list rather than the technically correct runners up. We chose them based on being in notably different regions of the world. Now we go right to the other side of the world to Colombia in South America. We’ve found a line of sight from the department of Antioquia to Pico Cristobal, Colombia’s highest mountain. Our pick…from alltheviews.world

In the maker’s words, at launch

We're Tom and Ryan and we teamed up to build an algorithm with Rust and SIMD to exhaustively search for the longest line of sight on the planet. We can confirm that a previously speculated view between Pik Dankova in Kyrgyzstan and the Hindu Kush in China is indeed the longest, at 530km. We go into all the details at…

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