It would be an exhausting three days for most athletes but not for the Commonwealth Games decathlon silver medallist.
Newdick (26) will be defending his senior men's long jump, triple jump, pole vault and 110m hurdles titles.
He will also contest the 100m, shot put and discus.
He has won 13 New Zealand senior titles: decathlon (five), long jump (three), triple jump (two), pole vault (two) and 110m hurdles.
The decathlon championship is held separately.
Newdick, who won his first senior men's title in the decathlon in 2005, uses the New Zealand season for background training and endurance work.
"My competitive season starts in Europe," he said.
"I contested eight decathlons last year and it was too much."
This year, he intends to limit himself to three decathlons in Europe before the world championships in South Korea in September.
Newdick is the most dedicated athlete in New Zealand and spends up to five hours training each day.
"It probably comes to eight hours a day, when you add in rehabilitations, massage and diet," he said.
Newdick first made his mark on the world scene when he finished runner-up in the octathlon at the world youth championships in Hungary in 2001.
His big breakthrough in senior ranks came when he finished runner-up at the World University Games in Belgrade in 2009.
He was ranked 23rd in the world in 2009, jumped up to 16th when he won the silver medal at the Commonwealth Games and has his eyes on a top 10 spot this year.
"If I can do that, I will have a chance of a podium place at the London Olympics," Newdick said.
Newdick knows time is on his side because the world champion is aged 34.
In his spare time he is studying sport and recreation and Spanish at the Auckland University of Technology.
Newdick's best decathlon score is 8091 points and his best performances in individual events are: 100m (10.86sec), long jump (7.42m), shot put (14.59m), high jump (1.99m), 400m (49.20sec), 110m hurdles (14.38sec), discus (47.40m), pole vault (4.80m), javelin (64.09m) and 1500m (4min 29.35sec).
The two big stars competing at the New Zealand championships are Olympic gold medallist Valerie Adams, in the discus, and 1500m silver medallist Nick Willis, who will contest the 5000m.
Adams was in top form in Sydney last weekend, when she threw a season-best 20.55m.
Willis ran his best 5000m time of 13min 27.54sec in Sacramento in 2005 and it would be hard for him to reach that time today. But he is certain to beat Phil Costley's (Canterbury) 2003 Caledonian Ground record time of 14min 2.80sec.
The national championships will provide the highest calibre of athletics seen on the new Caledonian Ground since it opened in 1999.
New Zealand's seven medallists from the Delhi Commonwealth Games will be competing.
This includes former Otago hurdler Andrea Miller, who is now based on the Gold Coast. She holds the ground record for the 100m hurdles of 13.40sec that she ran in 2007.
Talented Auckland shot putter Jacko Gill will be attempting to beat his own world record for 16, 17 and 18-year-olds. His best distance is the 23.86m he threw at the New Zealand secondary schools championships in Hastings in December.
At last year's championships in Christchurch, Otago athletes won a record 40 medals (17 gold, 13 silver and 10 bronze). This year's team could beat that record.
Defending senior champions from the province are Marshall Hall (discus), Anna Smythe (100m), Rory McSweeney (AWD javelin), Hannah Blair (javelin) and Daniel O'Shea (400m hurdles).
Today's major events. -
• 1.30pm: Women's long jump
• 1.30pm: Men's shot put
• 3.10pm: Women's 5000m
• 3.15pm: Women's discus
• 5pm: Women's 100m
• 5.05pm: Men's 100m
• 5.15pm: Men's 5000m
Who to watch
at the Caledonian Ground
The national names
• Valerie Adams: The Beijing Olympic shot put champion has put New Zealand athletics back on the world stage.
• Nick Willis: The Beijing Olympic 1500m silver medallist has opted to race the 5000m today.
• Nikki Hamblin: The rising star of women's middle distance running will race her specialist 800m and 1500m.
• Brent Newdick: Plans to contest seven events and defend his titles in the senior long jump, triple jump, pole vault and 110m hurdles.
• Andrea Miller: The Commonwealth Games 100m hurdles bronze medallist will return to her old haunts at the Caledonian Ground.
The locals
• Marshall Hall: Favoured to make it three titles in a row in the men's discus.
• Andrew Moore: Wants to regain his 400m title.
• Anna Smythe: Defending women's 100m champion.
• Daniel O'Shea: After a second gold medal in the men's 400m hurdles.
• Hannah Blair: Needs a season-best throw to retain her women's javelin title.
The dark horse
• Otago walker Roseanne Robinson.
