diff --git a/code/_onclick/hud/_defines.dm b/code/_onclick/hud/_defines.dm
index a987f70d7b..ae36b4abb4 100644
--- a/code/_onclick/hud/_defines.dm
+++ b/code/_onclick/hud/_defines.dm
@@ -79,6 +79,7 @@
 #define ui_drop_throw "EAST-1:28,SOUTH+1:7"
 #define ui_pull_resist "EAST-2:26,SOUTH+1:7"
 #define ui_movi "EAST-2:26,SOUTH:5"
+#define ui_sprintbufferloc "EAST-2:26,SOUTH:18"
 #define ui_acti "EAST-3:24,SOUTH:5"
 #define ui_zonesel "EAST-1:28,SOUTH:5"
 #define ui_acti_alt "EAST-1:28,SOUTH:5"	//alternative intent switcher for when the interface is hidden (F12)
diff --git a/code/_onclick/hud/human.dm b/code/_onclick/hud/human.dm
index 01e118aaed..7f2fca9d98 100644
--- a/code/_onclick/hud/human.dm
+++ b/code/_onclick/hud/human.dm
@@ -134,6 +134,13 @@
 	static_inventory += using
 	//END OF CITADEL CHANGES
 
+	//same as above but buffer.
+	using = new /obj/screen/sprint_buffer
+	using.screen_loc = ui_sprintbufferloc
+	sprint_buffer = using
+	static_inventory += using
+
+
 	using = new /obj/screen/drop()
 	using.icon = ui_style
 	using.screen_loc = ui_drop_throw
diff --git a/modular_citadel/code/_onclick/hud/screen_objects.dm b/modular_citadel/code/_onclick/hud/screen_objects.dm
index 511627b81f..3a0eb364cb 100644
--- a/modular_citadel/code/_onclick/hud/screen_objects.dm
+++ b/modular_citadel/code/_onclick/hud/screen_objects.dm
@@ -1,25 +1,3 @@
-/obj/screen/mov_intent
-	icon = 'modular_citadel/icons/ui/screen_midnight.dmi'
-
-/obj/screen/sprintbutton
-	name = "toggle sprint"
-	icon = 'modular_citadel/icons/ui/screen_midnight.dmi'
-	icon_state = "act_sprint"
-	layer = ABOVE_HUD_LAYER - 0.1
-
-/obj/screen/sprintbutton/Click()
-	if(ishuman(usr))
-		var/mob/living/carbon/human/H = usr
-		H.togglesprint()
-
-/obj/screen/sprintbutton/proc/insert_witty_toggle_joke_here(mob/living/carbon/human/H)
-	if(!H)
-		return
-	if(H.sprinting)
-		icon_state = "act_sprint_on"
-	else
-		icon_state = "act_sprint"
-
 /obj/screen/restbutton
 	name = "rest"
 	icon = 'modular_citadel/icons/ui/screen_midnight.dmi'
diff --git a/modular_citadel/code/_onclick/hud/sprint.dm b/modular_citadel/code/_onclick/hud/sprint.dm
new file mode 100644
index 0000000000..290fcd368e
--- /dev/null
+++ b/modular_citadel/code/_onclick/hud/sprint.dm
@@ -0,0 +1,41 @@
+/obj/screen/mov_intent
+	icon = 'modular_citadel/icons/ui/screen_midnight.dmi'
+
+/obj/screen/sprintbutton
+	name = "toggle sprint"
+	icon = 'modular_citadel/icons/ui/screen_midnight.dmi'
+	icon_state = "act_sprint"
+	layer = ABOVE_HUD_LAYER - 0.1
+
+/obj/screen/sprintbutton/Click()
+	if(ishuman(usr))
+		var/mob/living/carbon/human/H = usr
+		H.togglesprint()
+
+/obj/screen/sprintbutton/proc/insert_witty_toggle_joke_here(mob/living/carbon/human/H)
+	if(!H)
+		return
+	if(H.sprinting)
+		icon_state = "act_sprint_on"
+	else
+		icon_state = "act_sprint"
+
+//Sprint buffer onscreen code.
+/datum/hud/var/obj/screen/sprint_buffer/sprint_buffer
+
+/obj/screen/sprint_buffer
+	name = "sprint buffer"
+	icon = 'icons/effects/progessbar.dmi'
+	icon_state = "prog_bar_100"
+
+/obj/screen/sprint_buffer/Click()
+	if(isliving(usr))
+		var/mob/living/L = usr
+		to_chat(L, "<span class='boldnotice'>Your sprint buffer's maximum capacity is [L.sprint_buffer_max]. It is currently at [L.sprint_buffer], regenerating at [L.sprint_buffer_regen_ds * 10] per second. \
+		Sprinting while this is empty will incur a [L.sprint_stamina_cost] stamina cost per tile.</span>")
+
+/obj/screen/sprint_buffer/proc/update_to_mob(mob/living/L)
+	var/amount = 0
+	if(L.sprint_buffer_max > 0)
+		amount = round(CLAMP((L.sprint_buffer / L.sprint_buffer_max) * 100, 0, 100), 5)
+	icon_state = "prog_bar_[amount]"
diff --git a/modular_citadel/code/modules/mob/living/carbon/damage_procs.dm b/modular_citadel/code/modules/mob/living/carbon/damage_procs.dm
index c2c581d282..7264d95bae 100644
--- a/modular_citadel/code/modules/mob/living/carbon/damage_procs.dm
+++ b/modular_citadel/code/modules/mob/living/carbon/damage_procs.dm
@@ -18,3 +18,21 @@
 	if(recoveringstam && amount > 20)
 		incomingstammult = max(0.01, incomingstammult/(amount*0.05))
 	return amount
+
+/mob/living/carbon/doSprintLossTiles(tiles)
+	doSprintBufferRegen(FALSE)		//first regen.
+	if(sprint_buffer)
+		var/use = min(tiles, sprint_buffer)
+		sprint_buffer -= use
+		tiles -= use
+	update_hud_sprint_bar()
+	if(!tiles)		//we had enough, we're done!
+		return
+	adjustStaminaLoss(tiles * sprint_stamina_cost)		//use stamina to cover deficit.
+
+/mob/living/carbon/proc/doSprintBufferRegen(updating = TRUE)
+	var/diff = world.time - sprint_buffer_regen_last
+	sprint_buffer_regen_last = world.time
+	sprint_buffer = min(sprint_buffer_max, sprint_buffer + sprint_buffer_regen_ds * diff)
+	if(updating)
+		update_hud_sprint_bar()
diff --git a/modular_citadel/code/modules/mob/living/carbon/human/human_movement.dm b/modular_citadel/code/modules/mob/living/carbon/human/human_movement.dm
index 2a1c790b2a..409864c900 100644
--- a/modular_citadel/code/modules/mob/living/carbon/human/human_movement.dm
+++ b/modular_citadel/code/modules/mob/living/carbon/human/human_movement.dm
@@ -5,7 +5,7 @@
 	var/oldpseudoheight = pseudo_z_axis
 	. = ..()
 	if(. && sprinting && !(movement_type & FLYING) && canmove && !resting && m_intent == MOVE_INTENT_RUN && has_gravity(loc) && !pulledby)
-		adjustStaminaLossBuffered(0.3)
+		doSprintLossTiles(1)
 		if((oldpseudoheight - pseudo_z_axis) >= 8)
 			to_chat(src, "<span class='warning'>You trip off of the elevated surface!</span>")
 			for(var/obj/item/I in held_items)
diff --git a/modular_citadel/code/modules/mob/living/carbon/life.dm b/modular_citadel/code/modules/mob/living/carbon/life.dm
new file mode 100644
index 0000000000..e94bd75985
--- /dev/null
+++ b/modular_citadel/code/modules/mob/living/carbon/life.dm
@@ -0,0 +1,3 @@
+/mob/living/carbon/Life()
+	. = ..()
+	doSprintBufferRegen()
diff --git a/modular_citadel/code/modules/mob/living/damage_procs.dm b/modular_citadel/code/modules/mob/living/damage_procs.dm
index 8323386eff..ce81c7aae7 100644
--- a/modular_citadel/code/modules/mob/living/damage_procs.dm
+++ b/modular_citadel/code/modules/mob/living/damage_procs.dm
@@ -1,2 +1,5 @@
 /mob/living/proc/adjustStaminaLossBuffered(amount, updating_stamina = TRUE, forced = FALSE)
 	return
+
+/mob/living/proc/doSprintLossTiles(amount)
+	return
diff --git a/modular_citadel/code/modules/mob/living/living.dm b/modular_citadel/code/modules/mob/living/living.dm
index b07b8ed64b..ac79ea7f25 100644
--- a/modular_citadel/code/modules/mob/living/living.dm
+++ b/modular_citadel/code/modules/mob/living/living.dm
@@ -8,6 +8,14 @@
 	var/intentionalresting = FALSE
 	var/attemptingcrawl = FALSE
 
+	//Sprint buffer---
+	var/sprint_buffer = 42					//Tiles
+	var/sprint_buffer_max = 42
+	var/sprint_buffer_regen_ds = 0.3		//Tiles per world.time decisecond
+	var/sprint_buffer_regen_last = 0		//last world.time this was regen'd for math.
+	var/sprint_stamina_cost = 0.55			//stamina loss per tile while insufficient sprint buffer.
+	//---End
+
 /mob/living/movement_delay(ignorewalk = 0)
 	. = ..()
 	if(resting)
@@ -118,3 +126,7 @@
 		filters -= CIT_FILTER_STAMINACRIT
 		update_canmove()
 	update_health_hud()
+
+/mob/living/proc/update_hud_sprint_bar()
+	if(hud_used && hud_used.sprint_buffer)
+		hud_used.sprint_buffer.update_to_mob(src)
diff --git a/tgstation.dme b/tgstation.dme
index 9e104a6bfd..6aee7dffa1 100755
--- a/tgstation.dme
+++ b/tgstation.dme
@@ -2830,6 +2830,7 @@
 #include "modular_citadel\code\_onclick\item_attack.dm"
 #include "modular_citadel\code\_onclick\other_mobs.dm"
 #include "modular_citadel\code\_onclick\hud\screen_objects.dm"
+#include "modular_citadel\code\_onclick\hud\sprint.dm"
 #include "modular_citadel\code\_onclick\hud\stamina.dm"
 #include "modular_citadel\code\controllers\configuration\entries\general.dm"
 #include "modular_citadel\code\controllers\subsystem\job.dm"
@@ -2991,6 +2992,7 @@
 #include "modular_citadel\code\modules\mob\living\status_procs.dm"
 #include "modular_citadel\code\modules\mob\living\carbon\carbon.dm"
 #include "modular_citadel\code\modules\mob\living\carbon\damage_procs.dm"
+#include "modular_citadel\code\modules\mob\living\carbon\life.dm"
 #include "modular_citadel\code\modules\mob\living\carbon\reindex_screams.dm"
 #include "modular_citadel\code\modules\mob\living\carbon\human\human.dm"
 #include "modular_citadel\code\modules\mob\living\carbon\human\human_defense.dm"