diff --git a/src/physics.rs b/src/physics.rs
index b566a3a5..e0f28aeb 100644
--- a/src/physics.rs
+++ b/src/physics.rs
@@ -2,6 +2,7 @@ use std::collections::{HashMap,HashSet};
 use crate::model_physics::{self,PhysicsMesh,PhysicsMeshTransform,TransformedMesh,MeshQuery,PhysicsMeshId,PhysicsSubmeshId};
 use strafesnet_common::bvh;
 use strafesnet_common::map;
+use strafesnet_common::run;
 use strafesnet_common::aabb;
 use strafesnet_common::model::{MeshId,ModelId};
 use strafesnet_common::gameplay_attributes::{self,CollisionAttributesId};
@@ -906,6 +907,10 @@ pub struct PhysicsState{
 	//gameplay_state
 	mode_state:ModeState,
 	move_state:MoveState,
+	//run is non optional: when you spawn in a run is created
+	//the run cannot be finished unless you start it by visiting
+	//a start zone.  If you change mode, a new run is created.
+	run:run::Run,
 }
 //random collection of contextual data that doesn't belong in PhysicsState
 pub struct PhysicsData{
@@ -925,11 +930,12 @@ impl Default for PhysicsState{
 			time:Time::ZERO,
 			style:StyleModifiers::default(),
 			touching:TouchingState::default(),
-			move_state: MoveState::Air,
+			move_state:MoveState::Air,
 			camera:PhysicsCamera::default(),
 			input_state:InputState::default(),
 			world:WorldState{},
 			mode_state:ModeState::default(),
+			run:run::Run::new(),
 		}
 	}
 }
@@ -1414,10 +1420,25 @@ fn run_teleport_behaviour(wormhole:&Option<gameplay_attributes::Wormhole>,models
 						//doing input_and_body to refresh the walk state if you hit a wall while accelerating
 						state.apply_enum_and_input_and_body(data);
 					},
-					(PhysicsCollisionAttributes::Intersect{intersecting: _,general},Collision::Intersect(intersect))=>{
+					(PhysicsCollisionAttributes::Intersect{intersecting:_,general},Collision::Intersect(_intersect))=>{
 						//I think that setting the velocity to 0 was preventing surface contacts from entering an infinite loop
 						state.touching.insert(collision);
 						if let Some(mode)=data.modes.get_mode(state.mode_state.get_mode_id()){
+							let zone=mode.get_zone(convex_mesh_id.model_id.into());
+							match zone{
+								Some(gameplay_modes::Zone::Start)=>{
+									println!("@@@@ Starting new run!");
+									state.run=run::Run::new();
+								},
+								Some(gameplay_modes::Zone::Finish)=>{
+									match state.run.finish(state.time){
+										Ok(())=>println!("@@@@ Finished run time={}",state.run.time(state.time)),
+										Err(e)=>println!("@@@@ Run Finish error:{e:?}"),
+									}
+								},
+								Some(gameplay_modes::Zone::Anticheat)=>state.run.flag(run::FlagReason::Anticheat),
+								None=>(),
+							}
 							run_teleport_behaviour(&general.wormhole,&data.models,mode,&state.style,&data.hitbox_mesh,&mut state.mode_state,&mut state.touching,&mut state.body,convex_mesh_id);
 						}
 					},
@@ -1441,6 +1462,18 @@ fn run_teleport_behaviour(wormhole:&Option<gameplay_attributes::Wormhole>,models
 					},
 					(PhysicsCollisionAttributes::Intersect{intersecting: _,general:_},Collision::Intersect(_))=>{
 						state.touching.remove(&collision);
+						if let Some(mode)=data.modes.get_mode(state.mode_state.get_mode_id()){
+							let zone=mode.get_zone(collision.convex_mesh_id().model_id.into());
+							match zone{
+								Some(gameplay_modes::Zone::Start)=>{
+									match state.run.start(state.time){
+										Ok(())=>println!("@@@@ Started run"),
+										Err(e)=>println!("@@@@ Run Start error:{e:?}"),
+									}
+								},
+								_=>(),
+							}
+						}
 					},
 					_=>panic!("invalid pair"),
 				}