A summary report is generally created in list view where you can get much nicer formatting than you can in table view.
If you want one row for each race, change to list view and change the body layout part into a sub Summary part "when sorted by Race". You can do this easily if you double click the body part label while in layout mode.
Then arrange your fields and resize this part to get the look you want and be sure to keep your records sorted by Race whenever you browse, preview or print from this layout. (In browse mode, the layout will be blank until the records are sorted in a sort order that includes the Race field.)