Updated
Hello my Brethren of the all mighty D20 and 
After some good help from you guys on discord I have got my basic chase mechanics together, (Effort Vs Timer)…
but what do I throw at my players…?
Instead of rollable tables I have gone for the Think Deck, not as prep, but really go mad and do it live in the game.
The Cards
LESSER FOE - Mooks stand in the way, Hit and Run
LESSER OBSTACLE - Jump, Crawl, Open, something Minor to move along
LONG RANGE - Run, the path is long
DOORWAY - Gate, underpass, gap in the wall, Doors
GREATER OBSTACLE - Hard Jump, Climb, Overcome the big
ALLIES - Your friend behind you in trouble, or an Ally on the way
DEADLY PERIL - Avoid Damage from an Element, Trap, or some other strange and deadly
REVELATION - The shortcut, something to block the enemy - double your effort
TRICKSTER FOE - The wrong way, going in circles, the fools path - Half your effort
ROLEPLAY FOE - A guard, a puzzle, something you need brains for
SUPREME FOE - The Alpha, Quarterback blocking the path, Hard hitter and challenging
DOOM - Raise the stakes, Fudge the timer, make the bad worse
TARGETS TIMERS - use them how you see fit for the situation, modify the targets, rolls or change targets
How I use this
I have my Region where my players are, let’s say CAVES, that is my power word to work with.
I draw 2 pairs of cards, to create 2 options for the runners, make more or less options as you see fit.
Draw 3 cards if you need more detail.
Some examples of draws
Trickster - Supreme foe = In the open cavern, you see nothing but the path on the far end ahead, something feel off here.
(Ambush from an alpha, sneak past or go for it)
Roleplay - Revelation = The Goblin tell you he knows a faster way, do you trust him or proceed the path in Front (trust the little guy and be rewarded with double effort)
Long Range - 4 = A long stretch, you get some speed (+4 to effort)
Revelation - Doorway = An open Door, from the other side there is a locking mechanism (Block the path, double the effort)
Another Example
To your left there is a heavy sturdy door… Up ahead the long corridor something moving in the dark.
What do you do?
Think quick, Jason is right behind you
Some extra thoughts, so far I treat all suits the same, you could give each suit it’s own target from 10 to 18
Make black normal and red cards Hard
Remove some cards to change up the probability of the run.
To finish off, its nothing really that special, but it helps me to create the situation and gives the deck more utility instead of just the prep.
Also less prep notes…
Bad guy chasing them with meat cleaver, grab the deck 
Effort on the Obstacles to catch or escape