Unlimited sprint in and out of combat. At default Shepard could run about 25meters or something like this so it is definitely not much for heavy trained/enhanced military person. Values of sprinting are changed to those from default Mass Effect 3. So you will never get tired when sprinting. 

INSTALLATION (ME3Tweaks Mod Manager needed )
1. Download mod
2. Open ME3Tweaks Mod Manager
3. Drag downloaded file into Mod Manager 
4. Apply or import the mod. If you import - click mod name on the list and then click Apply Mod at the bottom right of the window.

This is version for Mass Effect 2 Original Trilogy. If you want version for Mass Effect 2 Legendary Edition it is in bigger mod HERE
For Mass Effect 3 I don't making such mod because sprinting is there unlimited at default (both for combat and non-combat modes ).

UNINSTALL:
In ME3Tweaks click Manage Target (first make sure that location for Mass Effect 2 Original Trilogy is selected ) and find this mod (it is in default opened bookmark: "Installed DLC Mods" ) - click delete mod.


OTHER MY MODS:
For Mass Effect 2 (Original Trilogy ):
ME2 Skipping dialogues without selecting response
ME2 Auto cover off
ME2 Corpses stay
ME2 Changes for Import Credits from ME1 save (many options )
ME2 Changes for Resources import bonus (many options )
ME2 Crouching plus Better Accuracy (toggle or hold. many key options to choose )
ME2 Toggle Walk (no need hold button to walking )
ME2 No auto weapon swap when gun empty
ME2 Decals stay
ME2 10x Time Speed Up Button ( useful for skipping )
ME2 QoL. mouse acceleration off. infinite run. separate use sprint cover. time speed button. toggle walk

All my mods for Legendary Edition are HERE
Mods for Mass Effect Original Trilogy are here: ME1, ME3


ACKNOWLEDGEMENTS / CREDITS
Big kudos for Mgamerz and ME3Tweaks Group for tools what make making and installing mods convenient:

ME3Tweaks : ME3Tweaks Mod Manager
https://www.nexusmods.com/masseffect2/mods/248