OLD ORCHARD BEACH – The Revolution3 Triathlon is taking place on Sunday, Aug. 26, in downtown Old Orchard Beach. More than 1,200 triathletes are entered, including 40 professionals who will race in the Olympic REV.

The Professional Olympic REV begins at 7:05 a.m. on Sunday. There’s also a free race expo open on Friday (3-7 p.m.), Saturday (10 a.m.-4 p.m.) and Sunday (9 a.m.-4 p.m.). For more information, visit www.rev3tri.com.

The following roads will be closed or impacted for the races: First Street will be closed from Staples Street to Heath Street from noon on Friday until 6 p.m. Sunday.

Police will be controlling traffic at the following intersections on Sunday:

In Old Orchard Beach:

Old Orchard Street at East/West Grand (6:30-8:30 a.m.)

Old Orchard Street at First Street (6:30 a.m.-2:30 p.m.)

Old Orchard Street at Cascade Road (6:30 a.m.-noon)

Staples Street at Saco Avenue (6:30 a.m.-noon)

Milliken Street at Walnut Street (7:30 a.m.-2:30 p.m.)

Walnut Street at Portland Avenue (7:30 a.m.-2:30 p.m.)

Portland Avenue at Milliken Mills Road (7:30 a.m.-2:30 p.m.)

In Scarborough:

Eastern Trail at Old Blue Point Road (7:30 a.m.-2:30 p.m.)

Eastern Trail at Pine Point Road (7:30 a.m.-2:30 p.m.)

Ash Swamp Road at Watson Mill Road (7:30 a.m.-2:30 p.m.)

In Saco:

Motorists should avoid using Route 1 from 7-11:30 a.m.

Route 1 at Cascade Road/Flag Pond Road (7 a.m.-11:30 a.m.)

Flag Pond Road and Jenkins Road (7:30 a.m.-11:30 a.m.)

Hearn Road and Flag Pond Road (7:30 a.m.-11:30 a.m.)

Route 112 (Buxton Road) and Hearn Road (7:30 a.m.-11:30 a.m.)

In Dayton:

Intersection of routes 5 and 35 (7:30 a.m.-11:30 a.m.)