Hoy said he had his eye on the 1500m record going into the race and decided to set a fast pace from the start.
"I just wanted to take it out and get rid of a few people with speed so the first lap was pretty quick and then I had the record in sight and I went on and chased it," said Hoy, who has yet to join an athletic club as the triathlon is his main sport.
Flanagan also had the 3000m in the morning before contesting the steeplechase later in the day. She led throughout the 3000m to record a B standard time of 9m 25.78s for the world junior championships and in the steeplechase carved 26s from Sarah McSweeney's record with a time of 6m 34.27s.
Flanagan said that it was not the best timing of the day for the 3000m.
"I don't really like morning races so I had to get through that and I was very happy with my time," said Flanagan. "In the 2km steeples I just wanted to go out and my aim was to break the record so I was just running as hard as I could throughout and my legs got through that."
It is her third steeplechase race so there is still plenty to improve on.
Another to impress was Ari Graham who won the junior girls 800m/1500m double. Front-running tactics won her times of 2m 4.63s and 4m 41.17.
Chris Brake (Tapawera Area School) was the only treble winner at the championships collecting the senior boys triple jump (14.18m), long jump by 1cm from Hamish Gill with 6.88m and the high jump at 2.03m.
Other school records went to pole vaulters Eliza McCartney 4.10m, and Pascal Kethers 5.10m, both B standards for the world junior championships, Lauren Bruce won senior girls hammer with 58.32m, Matthew Bloxham senior boys hammer at 76.68m, Leanne Ryan 100m hurdles (13.94s) and Sacred Heart's Bailey Stewart, Dalton Coppins, Alex Beddoes and Henry Boyhan in the senior boys 400m relay at 3m 18.59s.
Stewart, who had earlier won the senior boys 400m in 47.69s from Matthew Connolly said they had prepared well for the relay, planning the race during the week.
"I had a big talk with the boys and where each of us would run. It averaged out that each of us would have to run 49.1 if we wanted the record, said Stewart. "I decided to run first, it was a bit of a bad lane in lane eight because you don't have vision, but you just got to deal with it. I gave it a strong start and gave it to Dalton, seeing he's a 200m runner we expected that he'd pull us out and he came through in 49.2s and then Alex got it and he just opened up the lead and then Henry finished amazing," said Stewart.
Kethers said that he was quite stoked when he got a 16cm personal best in the pole vault with the record of 5.01m.
"But to then get 5.10m and a world junior qualifier was just a bonus on top of it. Five metres has been a barrier in the pole vault," said Kethers. "Once I broke that I just broke through. I have been training for the decathlon but it looks like I'll specialise in the pole vault now."
Jordan Rackham, who won the senior boys 1500m in 3m 58.71s, will return next year in Wanganui to defend his title and he said that he would also have a crack at breaking Geoff Shaw's 1975 2000m steeplechase record of 5m 52.90.
The most spectacular finish of the championships came in the junior boys 100m hurdles with Niven Longopoa (MAGS) diving over the finishing line in a desperate bid for victory ahead of Patrick Taberner of Fiordland. Both were timed at 13.70s with the photo finish giving the title to Taberner.
The John Walker-inspired "Throw for Gold" 14-strong team produced another outstanding effort with five golds, three silver, a bronze and four fourths at the championships.
The team was led by Sam Ulufonua (AGS) with his winning 58.60m discus throw - the 19th best throw in the world at under-18 level this year - a personal best.
Ofa Hakeai (AGGS) won gold in the senior girls discus and silver in the shot put.
Maddison Wesche (Lynfield), gold in the junior girls shot put (14.59m), was a newcomer to the team at 14 years. Her winning effort would have also won the senior title. She was only 91cm shy of the qualifying distance for the world under-18 champs.
Samson Aruwa (AGS), silver in the junior boys shot put, was another newcomer (also at 14 years) with a fantastic result considering he has a damaged ACL from basketball and could only stand throw.
Harry Crawford, at 15 and the team's amputee, won two golds and set two under-19 NZ open records in shot and discus and missed the Rio Paralympics men's qualifying mark by just 1.5m in the shot.
Sacred Heart College also had victories for Coppins (senior 200m) and the Year 9 six-person team of Jono Ainsley, Tim Heslin, Sean Paget, Jacob Holmes, Liam Miller and James Uhlenberg in the junior road race.
They also had silvers for Toy Adiregthavom, Feki Taukafa, Melino Huihui-uia and Sheldon Tovio (junior 4x100m relay), Chris Brokenshire (junior 800m), Sheldon Tovio (junior discus) and bronze for Martin White (senior 100m) and Adiregthavom, Nick Brokenshire, Taukafa, Chris Brokenshire (junior 4x400m relay).
Westlake's Anthony Nobilo won gold in the junior hammer. The WBHS juniors won the three- and six-person teams races in the junior road race.
Brandon James was second in the junior hammer. Cameron Tier won bronze in the senior 2000m steeplechase.
St Pauls Collegiate's James Hunt successfully defended his titles in the senior 110m and 300m hurdles double and was a member of the winning 4x100m relay team. Despite breaking his ankle eight weeks ago, Tom Smith was third in the senior 400m while Sean Henley-Smith claimed bronze in the senior 200m.
Records
Matthew Bloxham (Orewa) senior hammer throw 76.68m; Eliza McCartney (TGS) open girls pole vault 4.10m; Pascal Kethers (Rangitoto) open boys pole vault 5.10m; Lauren Bruce (Craighead Diocesan) senior girls hammer 58.32m; Leanne Ryan (Roncalli College) senior girls 100m hurdles 13.94s; Rosa Flanagan (Rangi Ruru Girls School) open girls 2000m steeplechase 6m 34.27s; Sacred Heart College, senior boys 4x400m relay 3m 18.59s.
Doubles
James Hunt, senior boys 110m hurdles, 300m hurdles; Chris Brake, senior boys high jump, triple jump; Finn Yeats, junior boys, 100m, 200m; Dan Hoy, junior boys 1500m, 3000m; Zoe Hobbs, senior girls 100m, 200m; Rosa Flanagan, senior girls 3000m, open girls 2000m steeplechase; Amy Robinson, senior girls long jump, 300m hurdles; Georgia Hull, junior girls 100m, 200m; Ari Graham, junior girls 800m, 1500m; Phoebe Edwards, junior girls 80m hurdles, high jump.
World Junior Championships qualifiers (B standard)
Flanagan 3000m 9m 25.78s; McCartney pole vault 4.10m; Kethers pole vault 5.10m.
