Recently came across an excellent post by [url=https://www.bungie.net/en-us/Forums/Post/243055147?sort=0&page=0]Your Cat[/url] about how fast the player sprints. A great deal of questions were asked in that thread and I decided to look into them myself. I was originally intending to simply mention them in Cat's thread but with the amount of information I came up with I decided it deserved its own post. Without further ado; The default sprint speed in D2 is [b]7[url=https://www.youtube.com/watch?v=eDUysbr_qlM].[/url]8 m/s (or 17.4 MPH)[/b]. This is universal for all classes. The Mobility stat has no affect on sprint speed. Using a sprint booster (Focused Breathing, Dunemarchers, etc.) increases sprint speed to [b]8.3 m/s (or 18.5 MPH)[/b]. Sprint boosters do not stack with themselves. (You don't go faster by using both Way of the Trapper [i]and[/i] Stompees) While you have a MIDA Multitool, Quickfang, or any weapon with the [i]Lightweight[/i] attribute equipped your sprint speed is increased. By default to [b]8.6 m/s (or 19.2 MPH)[/b]. When coupled with a sprint booster your sprint speed is increased to a whopping [b]9 m/s (or 20 MPH)[/b]. That's fast. UPDATE: While using the "melee supers" (Arc Staff, Fists of Havoc, Sentinel Shield) the player automatically sprints while moving forward at a speed of [b]9 m/s (or 20 MPH)[/b], the fastest sprint speed in the game. This can not stack with any boosters. ---------------------------------------------------------------------------------------------------------------------------------- One major question that came up was how this all compares to the speeds in D1, so I went ahead and tested that too. The default sprint speed in D1 is [b]8.3 m/s (or 18.5 MPH)[/b]. This is also universal for all classes. The Agility stat has no affect on sprint speed. Using a sprint booster (Keen Scout, Headstrong, etc.) increases sprint speed to [b]8.6 m/s (or 19.2 MPH)[/b]. When MIDA Multitool is equipped (and only MIDA Multitool) sprint speed is increased to 8.9m/s (or 19.9 MPH). With a sprint booster it goes up to [b]9.2 m/s (or 20.5 MPH)[/b]. Something unique to D1 however is that sprint speed is reduced while a Heavy weapon is equipped. To [b]7.9 m/s (or 17.6 MPH)[/b] by default and when using a sprint booster to [b]8.3 m/s (or 18.5 MPH)[/b] [which is normal sprint speed btw]. This is not the case for Power Weapons in D2. Also since it was mentioned I went ahead and measured Titan Skating in D1. Basic mashing skating was [b]9.8 m/s (or 22 MPH)[/b]. The min/max optimized Titan skating is a blinding [b]17.5 m/s (or 39 MPH)[/b]. 😉 [i]*Note that all numerical data in this post is subject to a 1% margin of error.[/i]