Dean Harrison completes Senior race double and breaks lap record at Southern 100

Dean Harrison has taken his Isle of Man TT form into this week’s Southern 100 by winning back-to-back Senior races on Wednesday.

2026 Superbike TT winner Dean Harrison. Credit: Isle of Man TT.
2026 Superbike TT winner Dean Harrison. Credit: Isle of Man TT.

Honda Racing UK star Dean Harrison has once again proved that he’s the rider to beat in the superbike category, after winning the Peel Holdings Superbike race on Wednesday morning, before replicating that victory in the Ellan Vannin Fuels race. 

On both occasions Harrison won the Senior race by more than eight seconds, while his overall race time was incredibly similar over the two seven-lap contests. 

Harrison started with victory in the Peel Holdings Senior race ahead of his brother Nathan Harrison. Dean was one of two riders to set a one lap speed of more than 115mph, which occurred on lap three.

Dean Harrison at the 2026 Isle of Man TT.
Dean Harrison at the 2026 Isle of Man TT.

He was also the only rider to achieve an average speed of more than 114mph over the full seven-lap distance. 

During the evening race, Harrison improved his average speed from 114.447mph to 114.713mph, while his best one lap average was also higher at 116.799mph, compared with a speed of 115.757mph. Again, Harrison was the only rider in the second Senior race to clock a best lap in the 116mph bracket. 

As well as clinching victory in the Ellan Vannin Fuels Superbike race, Harrison broke the lap record on three separate occasions, while also setting a new race record with a time of 15m33.637s. 

Dean Harrison racing a Honda at the 2026 TT.
Dean Harrison racing a Honda at the 2026 TT.

Mike Browne finished just over eight seconds down on the Honda rider, while 36-time Isle of Man TT winner Michael Dunlop retired for the second consecutive race.

Dunlop, who was riding his MD/Hawk Racing Honda during Wednesday’s evening race, retired from the Peel Holdings race while riding a BMW M1000 RR.

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