Distance for Windows

Mule deer in Estes Park, Colorado. Photo by David Miller.

The latest version of Distance is 7.1. Distance has been downloaded by over 50,000 users from around 135 countries.

What does Distance look like? Here are some screenshots.

Distance 7.1 as well as previous versions (7.0, 6.2, 6.1, 5.0, 4.1, 3.5 and 2.2) are available for download below at no cost. Suggested citations for all three versions are given on the citation page.

Information on the history of Distance is available on the Distance History page.

Download latest version

Distance 7.1 is the latest software, and is the recommended version for most users. It includes all of the features of Distance 6.2, updated R libraries and two new engines: simulation and multi-analysis. It is a Windows program, featuring a graphical user interface. It also has a built-in GIS, which can be used for automated survey design. It contains the new simulation engine and multi-analysis engine (MA) which deals with unidentified sightings as well as covariate and model uncertainty. It also contains updated versions of the density surface modelling (DSM) and mark-recapture distance sampling (MRDS) analysis engines for the analysis of double-observer line transect surveys (using DSM, MRDS, MA and the simulation engine requires installation of the free statistical software R).

Go to download page for Distance 7.1.

Download previous versions

Five versions of Distance are available for download from this site (links to downloads in the table below).

  • Version 7.0 was the previous Distance 7 release. It included the features of Distance 6.2, with two new engines: simulation and multi-analysis.
  • Version 6.2 was the last 6.x release of Distance. It was very similar to 6.0, but 6.2 includes more features and bug fixes. See release notes for information on the differences.
  • Version 6.0 was the previous 6.x release of Distance. It is very similar to 6.2, but 6.2 includes more features and bug fixes. See release notes for information on the differences.
  • Versions 5.0 and 4.1 are the previous major releases of the software - they are still available for download but we do not recommend their use.  They lack the DSM and MRDS engines and other recent bug fixes.
  • Version 3.5 also has a graphical user interface, but lacks many of the features of later versions.  Nevertheless, it has lower computer hardware requirements and so may be the only option for people with very ancient machines.
  • Version 2.2 is an older, DOS-based program that is driven using a simple command language. It is still available mainly for historical reasons.

Further information on main features in each version is available on the new in Distance page.

The following table summarizes the hardware and software requirements of the three versions. Click on the software titles to proceed to the registration and download pages, and for information about obtaining the software on CD.

Software Distance 7.0 Release 1 Distance 6.2 Release 1 Distance 6.0 Release 1 Distance 5.0 Release 2 Distance 4.1 Release 2 Distance 3.5 Release 6 Distance 2.2
Operating system Windows 10, 8 and 7 (likely works in legacy versions too) Windows 8 and 7 (likely works in legacy versions too) Windows XP, Vista (likely works in legacy versions too) Windows 98, Me, NT4, 2000, XP Windows 9x, Me, NT4, 2000, XP Windows 9x, Me, NT 4, 2000 DOS
Download size1 ~52MB~ 32MB ~20MB ~20MB ~16MB ~7MB ~0.5MB
Installed program size1 ~115MB ~71MB ~45MB ~45MB ~40MB ~10MB ~1MB
Minimum hardware requirements If your hardware is good enough to run Windows 7 or 8, you can run Distance! If your hardware is good enough to run Windows 7 or 8, you can run Distance! Same as Distance 4.1 Same as Distance 4.1 Realistic minimum: Pentium II processor, 48MB RAM, 800x600 SVGA monitor with >256 colors Recommended: 64-128MB RAM, 1024x768 monitor Absolute minimum: 486DX processor, 16MB RAM, 800x600 SVGA monitor with 256 colors Recommended minimum: Pentium processor, 32MB RAM, 800x600 SVGA monitor with >256 colors 8086 Processor, 640K memory. Maths co-processor recommended

1These figures do not include the statistical software R, which must be installed before the density surface modelling and mark-recapture distance sampling analysis engines can be used.

Other useful pages