2009: two-year-old season

On 5 July 2009 Apapane made her first appearance in a contest for previously unraced two-year-olds over 1800 metres at Fukushima Racecourse and finished third of the sixteen runners behind the colt Lordship. The filly was then off the course for three and a half months before recording her first victory in a maiden race over 1600 metres at Tokyo Racecourse. Two weeks later she won the Akamatsu Sho over the same course and distance in a record time of 1.34.5. On 13 December the filly was stepped up in class to contest the Grade I Hanshin Juvenile Fillies, Japan's most prestigious race for two-year-old fillies over 1600 metres on firm ground at Hanshin Racecourse. Starting at odds of 3.6/1 she won by half a length and three quarters of a length from Animate Bio with the favoured Shimmei Fuji in fifth.^[5]

In January 2010 Apapane was voted Champion two-year-old filly in the JRA Awards for 2009.^[6]

2010: three-year-old season

On her three-year-old debut Apapane contested the Grade III Tulip Sho over 1600 metres on yielding ground at Hanshin on 6 March and was beaten three quarters of a length into second place by Shoryu Moon. On 11 April, on firmer ground, the filly started favourite for the 70th running of the Grade I Oka Sho, the first leg of Japan's Fillies' Triple Crown over the same course and distance. She raced close behind the leaders as Oken Sakura set the pace but looked unlikely to obtain a clear run until Ebina switched her to the outside to make her challenge in the straight. She overtook Oken Sakura in the closing stages to win by half a length in a new track record time of 1:33.3.^[7] A Shin Returns took third ahead of Shoryu Moon whilst Animate Bio finished eighth of the eighteen runners.^[8]

On 23 May the filly was stepped up in distance and started favourite for the second leg of the Triple Crown, the Grade I Yushun Himba over 2400 metres at Tokyo Racecourse. Oken Sakura, A Shin Returns, Shoryu Moon and Animate Bio were again in the field as well as the Grade II Flora Stakes winner Saint Emilion. On a wet and gloomy day she tracked the leaders before moving to the outside on the final turn. The last 200 metres saw the race develop into a sustained struggle between Apapane and Saint Emilion and with neither filly able to establish an advantage the pair crossed the line together, two lengths clear of the other sixteen runners. After a ten-minute delay during which the racecourse judges scrutinised the photo-finish the result was declared as a dead-heat.^[9]

After a summer break, Apapane returned in autumn with the third leg of the triple crown, the Shuka Sho as her objective. She prepared for the race with a run in the Grade II Rose Stakes over 1800 metres at Hanshin in September. Racing for the first time in almost four months she finished fourth of the twelve runners behind Animate Bio, Wild Raspberry and A Shin Returns. On 17 October Apapane faced seventeen rivals including Saint Emilion, Animate Bio, Wild Raspberry, A Shin Returns, Shoryu Moon, and Oken Sakura in the Shuka Sho over 2000 metres at Kyoto Racecourse. She completed the Triple Crown, beating Animate Bio by three quarters of a length.^[10] On her final run of the season Apapane was matched against older fillies and mares in the Queen Elizabeth II Commemorative Cup over 2200 metres at Kyoto on 14 November. She started the 1.7/1 favourite but was beaten into third place by the British filly Snow Fairy.

In January 2011 Apapane picked up her second JRA Award as she was named champion three-year-old filly of 2010 with 284 of the 285 votes.^[11]

2011: four-year-old season

Apapane was matched against male opposition on her first appearance of 2011 and finished fourth behind Silport, Clever Tosho and Danon Yoyo in the Grade II Milers Cup at Hanshin on 17 April. Four weeks later the filly returned to Grade I class and all-female competition for the Victoria Mile over 1600 metres on firm ground at Tokyo and started 3/1 second choice in the betting. She faced several of her old rivals from her three-year-old days including Animate Bio, A Shin Returns, Oken Sakura and Wild Raspberry, but by far her most formidable opponent was the outstanding five-year-old racemare Buena Vista who started the 1/2 favourite. Drawn towards the wide outside of the seventeen runner field she was restrained towards the rear before making a strong late run in the straight. She overtook Lady Alba Rosa and Oken Sakura and then held off the challenge of Buena Vista to win by a neck.^[12] In June she started favourite for the Yasuda Kinen but finished sixth behind the three-year-old colt Real Impact, beaten less than two lengths by the winner.

After the summer break Apapane returned in the Grade II Fuchu Himba Stakes at Tokyo in October in which she started favourite but finished unplaced behind Italian Red. In November she replicated her 2010 performance in the Queen Elizabeth II Commemorative Cup as she finished third to Snow Fairy. On her final run of the year she was sent to Sha Tin Racecourse for the Hong Kong Mile on 11 December. After racing prominently in the early stages she faded in the straight and finished thirteenth of the fourteen runners behind Able One.

2012: five-year-old season

Apapane remained in training as a five-year-old but failed to reproduce her best form and failed to win in three races. She finished seventh in the Grade II Hanshin Himba Stakes, fifth in her attempt to repeat her 2012 success in the Victoria Mile and sixteenth in the Yasuda Kinen. She was being prepared for an autumn campaign when she began to suffer from lameness owing to what was described as "superficial digital flexor tendonitis". She was retired from racing to become a broodmare.^[13]

Breeding record

Apapane's daughter Akaitorino Musume emulated her mother by winning the Shuka Sho in 2021.