2015: two-year-old season

Vivlos began her racing career by finishing a close second to Classic Lydia in an event for previously unraced juveniles over 1600 metres at Kyoto Racecourse on 24 October. At the same track four weeks later she was stepped up in distance for a maiden race over 1800 metres and recorded her first success as she won from Ribbon Flower and nine others.^[5]

2016: three-year-old season

In March 2016 Vivlos was moved up to Grade 3 class but made no impact in her first two starts as she finished towards the rear in both the Tulip Sho at Hanshin Racecourse and the Flower Cup at Nakayama Racecourse. After three-month break she returned to winning form as she took a minor race over 2000 metres at Chukyo Racecourse in July.^[5]

On 10 September at Nakayama Vivlos started at odds of 4.8/1 for the Grade 3 Shion Stakes (a trial race for the Shuka Sho) and finished second of the eighteen runners, beaten two and a half lengths by the favourite Biche. In the Grade 1 Shuka Sho over 2000 metres at Kyoto on 16 October Vivlos, ridden by Yuichi Fukunaga, started the 5.3/1 third choice in the betting behind Biche and Jeweler. After racing in mid-division she produced a strong late run, took the lead in the closing stages and won by half a length from Pearl Code, with Kaiserball and Jeweler close behind.^[6] After the race Fukunaga said "We were in a perfect position and the trip was smooth and in good rhythm. I was aware of Biche behind me at the third corner but we were able to pick our own timing for the move. Her sister (Verxina) had a lot of speed and staying power but this filly has a tremendous burst of speed".^[7]

In the JRA Awards for 2016 Vivlos finished third behind Sinhalite and Jeweler in the voting for the JRA Award for Best Three-Year-Old Filly.^[8]

2017: four-year-old season

Vivlos's trainer Yasuo Tomomichi

On her 2017 debut Vivlos was matched against male opposition in the Grade 2 Nakayama Kinen over 1800 metres on 26 February in which she stayed on well from the rear of the field to finish fifth of the eleven runners, two lengths behind the six-year-old winner Neorealism. The filly was then sent to the United Arab Emirates to contest the Dubai Turf over 1800 metres at Meydan Racecourse on 25 March in which she was ridden by the Hong Kong-based Brazilian jockey João Moreira and started at odds of 14/1. The French colt Zarak started favourite ahead of the British-trained Ribchester while the other ten runners included Decorated Knight (Irish Champion Stakes), Deauville (Belmont Derby) and Mondialiste (Arlington Million). After racing towards the rear of the field as Ribchester set the pace Vivlos began to make progress and moved up to make her challenge on the outside in the straight. The outsider Heshem gained the advantage from Ribchester inside the final furlong but Vivlos took the lead in the closing stages to win by half a length.^[9] Moreira commented "She was brilliant. From the time that I sat on top of her on Friday, she gave me the feel that she was going to be very competitive... She made the job very easy for me today. We were travelling nice and when I took her out and she had daylight, she was strong to the line." Her trainer Yasuo Tomomichi said "She travelled very well from Japan and she was very relaxed in Dubai. She relaxed again in the back of the field and quickened very well. It kept raining but the ground wasn't too soft, which suited her."^[10]

After an absence of over six months Vivlos returned in the Grade 2 Fuchu Himba Stakes at Tokyo Racecourse on 14 October. She started the 2.2/1 favourite against thirteen other fillies and mares but despite finishing strongly she was failed by a neck to overhaul Crocosmia. Four weeks later the filly was stepped up in distance and started 1.8/1 favourite for the Grade 1 Queen Elizabeth II Cup over 2200 metres at Kyoto in which she was partnered by Christophe Lemaire. She was in contention throughout the race but was unable to make any significant progress in the closing stages and came home fifth behind the three-year-old Mozu Katchan.^[5]

In January 2018 she topped the poll to take the JRA Award for Best Older Filly or Mare for 2017 with 194 of the 290 votes.^[11]

In the 2017 World's Best Racehorse Rankings, Vivlos given a rating of 117 making her the 129th-best horse in the world and the fifth-best four-year-old filly behind Minding, Marsha, Persuasive and Songbird.^[12]

2018 & 2019: five and six-year-old seasons

In 2018 Vivlos again began her campaign in the Nakayama Kinen. On this occasion she started at odds of 5.4/1 and finished eighth of the ten runners behind the four-year-old colt Win Bright, beaten three and a half lengths by the winner. On 31 March the mare returned to Meydan Racecourse in an attempt to repeat her 2017 success in the Dubai Turf. Despite never looking likely to trouble the winner Benbatl she stayed on strongly in the straight to take second place ahead of her fellow Japanese challengers Deirdre and Real Steel. Almost three months later she was one of sixteen horses invited to contest the Takarazuka Kinen over 2200 metres at Hanshin Racecourse and kept on well in the closing stages to come home fourth behind Mikki Rocket.^[13]

After a summer break of over four months Vivlos returned for the autumn edition of the Tenno Sho over 2000 metres at Tokyo on 28 October. She started at odds of 16.4/1 and came home eighth of the twelve runners behind Rey de Oro. For her final tart of the year the mare was sent to Sha Tin Racecourse for the Hong Kong Mile on 9 December. Starting a 57/1 outsider she exceeded expectations as she came from well off the pace to take second place behind the local champion Beauty Generation.

Despite expectations that she would be retired at the end of 2018, Vivlos returned for a final run in the 2019 edition of the Dubai Turf on 30 March.^[14] As in the previous year she came with a strong late run to take second place, beaten one and a quarter lengths by Almond Eye. After the race Tomomichi said "everything went right. It was her third time here and she clearly seems to really like Dubai and we’re really grateful of all that she achieved at this place. She's calling it a career now but I hope to be back in Dubai with her kid one day."^[15]