Several motorbike crashes across the Waikato have left two riders fighting for their lives in hospital and at least five others badly injured.
Motorcyclist Lance Lowe remains in a serious conditionn Auckland Hospital after he was injured at the annual Paeroa Battle of the Streets race on Sunday.
Mr Lowe came off his motorbike about 10.30am before the race even started and suffered critical injuries when he was hit by another motorbike.
Two other riders were flown to Waikato Hospital with injuries ranging from moderate to serious later in the afternoon.
Another motorbike rider was critically injured at a motocross event near Tuakau yesterday morning. He was flown by Westpac Rescue Helicopter to Auckland Hospital.
On Saturday a man was flown to Waikato Hospital with serious injuries following a crash on the Coromandel just after 5pm. The 40 year old man, who was on his way to Paeroa's Battle of the Streets race, suffered serious back and hand injuries.
And two riders were injured at a trailbike event near Te Kuiti on Sunday. One man, aged in his 50s, broke six ribs, his collarbone and ruptured a hamstring after missing a sharp bend and crashing off a bank.
The man, believed to be from Taranaki, was one of 550 riders to take part in the two-day trailride raising money for Aria School. He was airlifted by Taupo's Greenlea rescue helicopter to Waikato Hospital.
Organiser Simon Beveridge said one other rider, aged 14, broke his leg at the event.
''While we would prefer to have no injuries at all, it is a massive event with three tracks running over 50 and 40 kilometre loops - so I guess you have to expect a couple of tumbles,'' he said.
Riders from around the North Island took part in the event that is expected to raise more than $20,000 for Aria School.