A brand-new event, and one of Boise's annual traditions. A big cycling weekend is on tap.

Cycling enthusiasts will get plenty of opportunities to see some top-notch riders this weekend around the Treasure Valley.

The inaugural Chrono Kristin Armstrong, a 13.3-mile road race, will stretch from West Ada County into Canyon County and end at Firebird Raceway on Friday. And the summer tradition, the Boise Twilight Criterium, will be held Saturday night in Downtown Boise.

Friday's race begins at Hunter's Creek Sports Park in Star, will work its way up Can Ada Road, west into the 2C and northeast up Chaparral Road, with the conclusion at the drag strip on Highway 16. The pro women begin at 10:30 a.m., the men at noon. The race is the only Union Cycliste Internationale (UCI) one-day time trial in the United States.

Among the racers to watch on the women's side are Chloé Dygert and Kelly Catlin, silver medalists for the U.S. at the 2016 Rio Olympics, and Canadian bronze medalist Jasmin Duehring. On the men's side, keep an eye on U23 Canadian national champion Adam Roberge and 2016 junior world champion and 2017 U23 silver medalist Brandon McNulty.

Armstrong wanted to play a major role in the race, which has a total purse of $40,000 for all events (split evenly for men and women winners), because the HP Women's Challenge was vital in her career. She said there's "no chance" she would have won three Olympic gold medals if not for the hometown event which was held from 1984 to 2002.

"I hope to present the same opportunity for someone who has the same dream I did, right here in Idaho," she said.

On Saturday, Armstrong will ride — sort of — at the Criterium. She will host her annual Kids' Ride around Cecil D. Andrus Park, starting at 1 p.m. The women's and men's pro races start at 7 and 8:15 p.m., respectively. Both will compete for $12,000 purses. Among the entrants are last year's champions, Jennifer Valente and Justin Williams.

Friday and Saturday will see temperatures approach or exceed 100 degrees, so stay hydrated. Or you can grab a drink at Capitol Park near the Criterium finish line and find some shade.

Chrono Kristin Armstrong Friday schedule

9:30 a.m.: Citizens' race

10:30 a.m.: Women's pro race start

Noon: Men's pro race start

4 p.m. (at JUMP): Free fries, plus beer and beverages for purchase, and post-race autographs/meet and greet

6 p.m.: Awards ceremony

Twilight Criterium Saturday schedule

Noon: Full road closure; Kids' Ride registration & autograph session with Kristin Armstrong

1 p.m.: Kids' Ride

1:45 p.m.: Category 4/5

2:45 p.m.: Masters 40+ (1/2/3) & Men 3

3:45 p.m.: Women 2/3/4

4:30 p.m.: Men 1/2/3

6 p.m.: Boise GreenBike Celebrity Race

6:50 p.m.: Opening Ceremony

7 p.m.: Women Pro 1/2

8:15 p.m.: Men Pro/1

10 p.m.: Awards ceremony