Breeding insights for untested stayers in ATC Australian Derby

This season's ATC Australian Derby features numerous entrants proven at 2400 metres, such as Victoria Derby star Observer and New Zealand Derby champ Road To Paris, but more than 50 percent of the $2 million Group 1 participants remain untested over the full Derby journey.

Delving into ancestry provides hints on suitability for the distance, with pedigrees detailed below for those lacking the experience.

GREEN SPACES (Street Boss x Outdoor)T: B Baker; J: R King

Bred for class, Green Spaces contests Derby favouritism as a three-quarter-brother to Trekking, conqueror of The Goodwood (1200m), Stradbroke Handicap (1400m) and placed in The Everest (1200m).

First foal of Redoute's Choice mare Outdoor, who secured three wins maxing at 1400m; her six to race have no successes past 1800m.

Endurance possibly bypassed a generation via granddam Serenade Rose, Stravinsky daughter who doubled VRC Oaks/ATC Oaks in 2005/06 and claimed G1 Vinery Stud Stakes (2000m).

Street Boss, top sprinter source in Australia, also bred Cox Plate winner Anamoe from Street Cry; sired Trekking plus distance aces Winx and Melbourne Cup victor Shocking.

STORM LEOPARD (Ghaiyyath x Brilliance)T: B,W&JD Hayes; J: T Berry

Lindsay Park's gelding from aptly named dam reflecting family track prowess. Brilliance by Singspiel mare Accessories, elite for Sheikh Mohammed, but standouts Helmet, Epaulette, Pericles, Bullbars peaked at a mile.

Near-final Accessories foal Lavalier (Microphone gelding) third G1 SA Derby (2500m), fourth G1 Queensland Derby (2400m).

Storm Leopard first stakes/1600m-plus for Brilliance in recent G2 Tulloch Stakes (2000m); sire counters sprint heritage.

Ghaiyyath's rapid Australian stud rise includes three Saturday runners, headlined by Victoria Derby (2500m) G1 winner Observer.

FEDERALIST (I Am Invincible x Arcadia Queen)T: J,W&M Hawkes; J: D Gibbons

Costing $1 million at Magic Millions Gold Coast, Federalist tops Derby yearling prices and fits Classic mould.

Staying power from dam Arcadia Queen, Pierro filly with three G1s including 2000m Might And Power/Champions Stakes, half to WA Derby (2400m) G2 winner Arcadia Dream.

I Am Invincible, Champion Sire thrice, Australia's stallion great, lacks G1 beyond 1600m; just two 2400m-plus winners sired.

VICTORIOUS SPIRIT (Ghaiyyath x Cornelia Marie)T: P Moody & K Coleman; J: L Nolen

$200,000 Inglis Premier Ghaiyyath first-crop from speed family to Rancher, half-brother line to third dam Sleepy Seymour.

Reset daughter Cornelia Marie won six to 1250m, but Zabeel via Teofilo filly Tyche Goddess: G3 Auraria (1800m) win post G2 Wakeful (2000m) place.

KAYE JAY (Crackerjack King x Kaye Club)T: C Douglas; J: M Zahra

Gelding in Barry/Barb Saunders' famed colours with family ties.

High Chaparral daughter Kaye Club won to 2000m, first from O'Reilly mare Rathsallagh (wins to 2400m, G1 Queensland Oaks runner-up).

Rathsallagh bred Eureka Street (Street Cry, to 2400m), Belle Savoir (Not A Single Doubt, G2 The Roses place 2000m); Brave Miss (Rebel Raider, five wins to 2100m).

Shamardal son Crackerjack King (G2 Italian Derby 2200m winner) no stakes hits from 134 foals eight crops.

BINGI (Snitzel x Mezulla)T: P Moody & K Coleman; J: M Dee

Snitzel, Arrowfield's four-time Champion Stallion, 26 G1 winners.

No G1 Derbys/Oaks yet.

Mezulla (Shamardal) top Fastnet Rock colt Ranch Hand, Listed Poseidon (1100m).

Stuart Ramsey colours; passed 2024 Gold Coast Yearling $300k reserve.

ARE YOU KIDDING (Castelvecchio x Panzerfaust)T: P Messara & L Gavranich; J: A Morgan

Arrowfield 2024 Classic Sale pass-in at $60k reserve.

Castelvecchio (Dundeel son, 2014 Derby winner) sired last year's filly Aeliana.

Redoute's Choice mare Panzerfaust to 1600m; dam Desert Fight Chile 2YO champ, dual G1 to 1800m.

Desert Fight produced nine including Kebede (Redoute's Choice, Doomben Roses 2020 win, Oaks last run).

Runners with 2400m form:

OBSERVER: Ghaiyyath colt led all way G1 Victoria Derby (2500m) last year.

ROAD TO PARIS: G1 New Zealand Derby (2400m) latest; Circus Maximus from Lights Of Heaven sister (G1 Oaks 2000m, G2 Brisbane Cup 2400m, G1 Caulfield Cup place).

DEAL DONE FAST:Dundeel colt first 2400m post 1.5L Victoria Derby second to Observer.

ONE STEP CLOSER:Castelvecchio 1.6L fourth Victoria Derby.

SAVISANTA: Savabeel gelding Geelong Classic third (2200m), Victoria Derby sixth (2.85L).

DEZIGNATION: So You Think son Kembla 2400m BM: second BM64, seventh BM68 pre-Tulloch fifth.

Head to online bookmakers for the best racing betting markets on the ATC Australian Derby.