The Ironman 70.3 is in Chattanooga this weekend. (Photos: Chloé Morrison)

Ironman 70.3 World Championship
Chattanooga becomes an Ironman mecca this weekend as more than 4,000 athletes and their supporters descend on the city. Plenty of activities are scheduled throughout the weekend. Friday features the Ironkids half-mile and 1-mile fun runs ahead of the Saturday and Sunday racing events. The women’s Ironman 70.3 will be Saturday, followed by the men’s Ironman 70.3 on Sunday, both beginning at 7:30 a.m. Click here for a list of spectating locations. Ironman 70.3 features a 1.2-mile swim, a 56-mile bicycle ride and a 13.1-mile run. The finish line is at Ross’s Landing. More information is here.

When: All weekend

Where: Click here
How much: Free

Chattanooga Mini Maker Faire
The Chattanooga Mini Maker Faire returns to First Tennessee Pavilion Saturday. Called “the greatest show (and tell) on Earth,” the event is a family-friendly showcase of invention, creativity and resourcefulness of the maker movement. More than 80 makers are expected to attend the event, offering attendees a chance to experience highly interactive exhibits and the opportunity to participate in workshops, hands-on experiments and hobby presentations. A few examples include robot battles, art bikes, cardboard castles, fire dancers, quarter-scale backyard railroads and more. Click here for more information. Watch a WTCI-produced “Greater Chattanooga” video on the event below.

When: Saturday, Sept. 9, 10 a.m.–6 p.m.
Where: 1826 Reggie White Blvd.
How much: Free

Second Saturdays on Station Street
A five-part monthly musical series concludes Saturday. Second Saturdays on Station Street will be 3–8 p.m. and feature local and regional music, art, culture, food, and a celebration of the businesses on Station Street and the Southside. This week, Rubik’s Groove will perform as part of a 1980s street party theme. The Pool will also perform. Click here for more information.

When: Saturday, Sept. 9, 3–8 p.m.
Where: 41 Station St.
How much: Free

Railfest 2017
Tennessee Valley Railfest returns for an annual celebration of railroading at the Tennessee Valley Railroad Museum. The weekend festival will be Saturday and Sunday and offer chances to ride trains, enjoy railroad exhibits, see blacksmith demonstrations, participate in children’s activities and more. Missionary Ridge Local trains will operate. Railfest ticketholders can ride the trains on an unlimited basis as space allows. Access is available for $25 per adult and $20 for children. If not planning to ride a train, guests can purchase a pass for $10. Click here for more information.

When: Saturday–Sunday, Sept. 9–10, 9:30 a.m.–4:30 p.m.
Where: 4119 Cromwell Road
How much: $20–$25

Doggie Dip Pool Party
Dogs will take over the pool at Warner Park Saturday from 11 a.m. to 3 p.m. All proceeds will benefit the homeless animals at McKamey Animal Center. Owners must accompany dogs (one adult per two dogs), and only dogs and dog owners are allowed in the pool during the event. Come prepared to get wet and have fun. Click here for more information.

When: Saturday, Sept. 9, 11 a.m.–3 p.m.
Where: 1254 E. Third St.
How much: $15