Sectional Times: The Metric That Separates Amateurs From Analysts
Sectional times in greyhound racing break a single race into its component phases, revealing information that the overall finishing time conceals. A dog that clocks 29.40 over 500 metres might have run that time with blistering early speed and a fading finish, or with a slow start and a devastating late surge. The finishing time is identical; the racing profile is completely different — and the selection implications for the next race diverge accordingly.
At Nottingham, where the first bend on the 500m trip arrives at just 85 metres from the traps, the opening split is particularly significant. A dog that reaches the first turn ahead of its rivals has already secured a positional advantage that compounds through every subsequent bend. Sectional data quantifies that advantage in tenths of a second, turning subjective descriptions like “showed early pace” into measurable, comparable numbers.
This article explains what sectional times are, what each split reveals about a dog’s running characteristics, and how to use them alongside calculated times and going allowances for sharper analysis at Nottingham.
What Each Split Reveals About a Dog’s Performance
A standard 500m greyhound race at most UK tracks is timed at two or three intermediate points in addition to the finish. The first split typically captures the time to the first bend — the phase that reveals trap speed and early pace. The second split covers the middle section of the race, from the first bend through the back straight and into the third turn. The final split records the run home from the last bend to the finish line.
The first split is the most analytically valuable because it isolates a dog’s break speed and initial acceleration from everything that happens afterwards. A dog that consistently posts the fastest first split in its races is a natural front-runner — one that creates its advantage by getting to the rail early and dictating the pace. If that same dog shows a declining second split and a weak final split, you’re looking at a speed specialist that fades: devastating over two bends, vulnerable over four.
The middle split captures what happens in the meat of the race, where positional jostling, bend interference, and tactical running take effect. A dog with a moderate first split but an excellent middle split is one that improves its position through the race — often a rail runner that tucks in behind the leaders through the first two bends and then picks off tiring rivals through the back straight. These dogs are less eye-catching than front-runners but often more consistent over a series of races.
The final split — the run from the last bend to the line — measures closing speed and stamina. Dogs with strong final splits are closers: they need the race to unfold in front of them before delivering their best work in the final straight. The GBGB has invested in timing systems across licensed tracks as part of its commitment to what CEO Mark Bird has described as maintaining world-leading standards within the sport, and the precision of modern timing equipment means that split data is reliable to hundredths of a second.
Taken together, the three splits create a speed profile for each dog: fast-slow-slow, slow-fast-fast, moderate-moderate-fast, and so on. This profile is more stable across races than the overall finishing time, because it reflects the dog’s natural running characteristics rather than the specific circumstances of any single race. A dog’s profile might shift slightly between tracks or distances, but its fundamental pattern — front-runner, mid-race mover, or closer — tends to persist.
Calculated Time vs Actual Time: Which to Trust
Every racecard at a UK greyhound track publishes two types of time: the actual time (the clock reading from traps to finish) and the calculated time (the actual time adjusted for track conditions). The difference between them is the going allowance — a number that reflects how fast or slow the track is running on a given evening.
The going allowance is determined before the meeting by running a trial dog over the standard distance and comparing its time against a benchmark. If the track is running slow — perhaps due to rain, heavy sand, or cold temperatures — the going allowance will be a positive number, say +20 (meaning the track is adding approximately 0.20 seconds to every dog’s time). If the track is fast — dry conditions, warm temperatures, a well-maintained surface — the going allowance might be -10 or even -15.
The calculated time strips out the going allowance, giving you a standardised figure that can be compared across meetings held in different conditions. A dog that runs an actual time of 29.60 on a night with a going allowance of +20 has a calculated time of 29.40 — the same as a dog that ran 29.40 on a standard going. Without calculated times, comparing form across meetings would be unreliable because weather and surface conditions vary from night to night.
At Nottingham, with its 437-metre circumference and sand surface, the going allowance can fluctuate significantly across seasons. Winter meetings on cold, damp sand produce higher allowances than summer meetings on dry, firm surfaces. Punters who rely solely on actual times without adjusting for going will consistently misread form — a dog that posted 30.00 on a heavy night may be substantially faster than a dog that posted 29.80 on a fast surface, once the going allowance is applied.
The question of which time to trust is not an either-or decision. Actual times tell you what happened on the night. Calculated times tell you what the performance would have equated to under standard conditions. Both are useful; neither is complete without the other. The most thorough approach is to record both, note the going allowance, and use the calculated time as the primary comparison metric while keeping the actual time as context for how the track was playing.
Applying Sectional Analysis to Nottingham Races
At Nottingham, sectional analysis is particularly rewarding because the track’s distance range creates distinct analytical opportunities at each trip. The 305m sprint — two bends, under 18 seconds — is almost entirely decided by the first split. If a dog posts the fastest first split, it is overwhelmingly likely to win, because there simply isn’t enough race left for a slower starter to make up the ground. Sectional data on the sprints tells you one thing and one thing only: which dog is fastest out of the traps over the first 85 metres to the bend.
On the 500m standard distance, all three splits matter. The first split determines early position. The middle split reveals who handles the bends best and who sustains their speed through the back straight. The final split identifies the closers — the dogs that produce their best turn of foot in the last hundred metres. When you’re studying a 500m race at Nottingham, compare each dog’s split profile against its trap draw. A front-runner drawn in Trap 1 with the fastest first split is the selection. A closer drawn in Trap 6 with the fastest final split needs trouble in front to deliver — possible, but less reliable.
Over the longer distances — 680m, 700m, and the marathon trips above 880m — the relative importance shifts towards the middle and final splits. Stamina becomes the dominant factor, and dogs that fade in the final split on shorter distances are exposed over these longer trips. The best stayer selections at Nottingham are dogs that maintain or improve their split times through the middle and final phases, even if they’re not the fastest out of the traps.
The practical application is direct: before selecting any dog at Nottingham, check whether its sectional profile matches the demands of tonight’s distance. A sprinter’s profile in a stayer’s race is a losing combination, regardless of how impressive the overall times look. Sectional times don’t replace form analysis — they refine it, giving you a layer of detail that the racecard’s headline figures cannot provide on their own.