Online Drag Racing Practice Tree

Free Hits

5 demo hits left
HOLD to stage , RELEASE to react

Free Hits

Just you and the tree.

Best
—
Avg
—
Red %
—
Hits
0

Solo Games

Your Trophy Case

Practice records

Trophy Case

Bracket

Choose
PTL practice tree
Reaction Time
Hold to stage
You
-.---
Opp
-.---

Up +0.005 Down −0.005
↑ ↓ after release
Transbrake
Hold Space or click & hold
Delay Box
Delay
0.000
Seconds
Rollout
0.040
Seconds
Bump
0.005
Seconds
ADJ
Pro-Stage
Transbrake
Timer 1
Race
Electronics
Tree
Auto Reset
Options
Target RT
Haptic (Mobile)
Latency offset (ms)
Stage On (s)
Stage to Start (s)
Timeout (s)
Session
Runs
0
Avg
-
Best
-
Consistency
-
Last 10
-
Good %
-
Streak
0
Score
-
Foul %
-
Skew
-
Last 20 Reactions
Setup

Input devices

Connect button, the older serial button, and the connection status. Tree settings and the delay box are below. The delay readout beside the stage still adjusts by a thousandth.

Free online drag racing practice tree

RacePTL is a free online practice tree for drag racers. Hold the button to stage, watch the Christmas tree count down, and release on green to see your reaction time to the thousandth. Practice on a .500 Sportsman full tree or a .400 Pro tree, add your delay box, and track your last, best and average lights.

How the practice tree works

Pre-stage and stage bulbs light as you hold the button. The ambers then come down and the tree goes green. Let go too early and you red-light; let go late and you give up time. A .000 light is perfect.

Pro tree vs Sportsman tree

The Sportsman tree lights each amber .500 seconds apart, giving you a rhythm to time. The Pro tree flashes all three ambers at once and turns green .400 seconds later, so there is only one cue. Practice one tree per session until your lights cluster.

What is a drag racing practice tree?

A practice tree simulates the drag strip starting line, or Christmas tree: pre-stage and stage bulbs, three ambers, then green. You hold to stage and release on the green to measure your reaction time, just like leaving the line at the track.

What is the difference between a Pro tree and a Sportsman tree?

On a .500 Sportsman (full) tree the three ambers light one after another, half a second apart, and green comes .500 after the last amber. On a .400 Pro tree all three ambers flash together and green comes .400 later. Bracket and sportsman classes race the full tree; pro classes race the Pro tree.

What is a good reaction time?

A perfect light is .000. Leaving before the green is a red light. Most bracket racers aim for a tight cluster between .000 and .030; consistency matters more than one great light.

Is the RacePTL practice tree free?

Yes. The practice tree runs free in your browser on desktop, phone or tablet with no download. Create an account to race other people head to head in the Practice Tree League.

Can I use a delay box?

Yes. Set a delay box value to practice the way you race, and connect the official PTL button for a real hand-held feel.

Learn more: How practice trees work · Reaction time guide · Delay boxes · Glossary · Race head to head