First National Bank Hot Air Balloon Competition and Children's Festival. Druid Hill Park liftoff between 6:30 a.m. and 7 a.m. Festival complete with rides, clowns, music by the Bayside Big Band, miniature horses from Valhalla Farm, Spectrum Puppets Productions, refreshments. The zoo opens at 9 a.m., admission is $1 off with Preakness pin. (410) 837-3030. Festivities are free with Preakness pin.
$700,000 Pimlico Special. Rich stakes races featuring former Triple Crown competitors at Pimlico Race Course. Post time 12:30 p.m. (410) 542-9400. Admission.
Crown Petroleum Balloonglow and Concert. Brightly lit hot-air balloons amid vendors, rides, arts, crafts from 4 p.m. to 10 p.m. in Oregon Ridge Park, Cockeysville. WPOC-FM (93.1) presents performers Joe Diffie, Collin Ray, Marge Calhoun 4:30 p.m. Proceeds benefit the Kennedy Krieger Institute, United Cerebral Palsy. (410) 837-3030. Admission $10, kids under 8 free; $4 off admission with Preakness pin.
Shock Trauma Gala: "Festival Internationale." Towson Center, Towson. 7 p.m.-midnight. Black-tie event features dinner, dancing to live entertainment. Proceeds to benefit the Trauma ,, Nursing Center, the EMS Field Program, the Charles McC. Mathias National Study Center. (410) 328-8778. Ticket required.
Fifth annual Fells Point Preakness Celebration. Fells Point Market Square, Baltimore. Noon. Live music, arts, crafts, fun, food. Also tomorrow. (410) 675-0898. Free.
Mickey and Minnie Celebrate the Preakness. Disney Store at the Gallery. Noon-4 p.m. Mickey, Minnie Mouse visit the Disney Store. (410) 332-4191. Free.
White Marlin Boardwalk Parade and Festival. Boardwalk, Ocean City. 1 p.m.-4 p.m. Official "marching in" of the resort's summer season. (410) 289-1413. Free.
Macy's Hunt Valley Preakness Fashion Show. Hunt Valley Mall, Hunt Valley. 2 p.m. Latest spring fashions, meet Miss Preakness and her court. (410) 785-0700. Free.
Mother's Day Balloon Competition. Oregon Ridge Park, Cockeysville. 7 a.m. liftoff. (410) 837-3030. Free.
Belvedere Square Antique Show. York Road and Belvedere Avenue. 9 a.m.-3 p.m. Approximately 20 dealers sell furniture, collectibles. (410) 239-6427. Free.
Maryland Preakness Celebration Potomac Hunt Races 40th annual steeplechase. River and Partnership roads, Seneca. 12:30 p.m. (202) 862-2873. Admission.
Picnic Sunday Cookouts. Boordy Vineyards, Hydes. 1 p.m.-4 p.m. Complimentary tastings, tour of the winery -- free with Preakness pin. Reservations required. Also, May 17. (410) 592-5015. Admission.