Bill Elliott won his first NASCAR race of the season yesterday, beating Mark Martin by 1.38 seconds in a record-setting Peak 500 stock car race at Dover, Del. Elliott's Ford set a track race record of 125.945 mph, breaking Ricky Rudd's mark of 124.706.

Martin maintained a narrow lead over Dale Earnhardt, the third-place finisher, in the season points championship.

The victory was Elliott's fourth at Dover, where he won in 1985 and twice in 1988, and the 33rd of his Winston Cup career. He had gone 23 races without a victory, the last coming Nov. 5 at Phoenix. . . .

Michael Andretti survived an off-course excursion and outraced his father, Mario, to win the rain-soaked Red Roof Inns 200 at Mid-Ohio Sports Car Course in Lexington, Ohio.

The younger Andretti, who started from the pole, dominated the race until he slid off the wet track and through grass and gravel one lap past the halfway mark in the 89-lap, 200-mile race.

The slide gave the lead to the elder Andretti and set his son back to third, behind Eddie Cheever.

Michael quickly overhauled Cheever and eventually passed his father on the 71st lap. The final margin was 7.63 seconds as Michael averaged 86.16 mph.

In a preliminary, Paul Tracy won the rain-shortened Mid-Ohio round of the American Racing Series and clinched the season title.