| Events at the 2017 European Athletics U23 Championships  | ||||
|---|---|---|---|---|
| Track events | ||||
| 100 m | men | women | ||
| 200 m | men | women | ||
| 400 m | men | women | ||
| 800 m | men | women | ||
| 1500 m | men | women | ||
| 5000 m | men | women | ||
| 10,000 m | men | women | ||
| 100 m hurdles | women | |||
| 110 m hurdles | men | |||
| 400 m hurdles | men | women | ||
| 3000 m steeplechase | men | women | ||
| 4×100 m relay | men | women | ||
| 4×400 m relay | men | women | ||
| Road events | ||||
| 20 km walk | men | women | ||
| Field events | ||||
| High jump | men | women | ||
| Pole vault | men | women | ||
| Long jump | men | women | ||
| Triple jump | men | women | ||
| Shot put | men | women | ||
| Discus throw | men | women | ||
| Hammer throw | men | women | ||
| Javelin throw | men | women | ||
| Combined events | ||||
| Heptathlon | women | |||
| Decathlon | men | |||
The men's 4 × 100 metres relay event at the 2017 European Athletics U23 Championships was held in Bydgoszcz, Poland, at Zdzisław Krzyszkowiak Stadium on 16 July.
The 4 × 100 metres relay or sprint relay is an athletics track event run in lanes over one lap of the track with four runners completing 100 metres each. The first runners must begin in the same stagger as for the individual 400 m race. A relay baton is carried by each runner. Prior to 2018, the baton had to be passed within a 20 m changeover box, preceded by a 10-metre acceleration zone. With a rule change effective November 1, 2017 that zone was modified to include the acceleration zone as part of the passing zone, making the entire zone 30 metres in length. The outgoing runner cannot touch the baton until it has entered the zone, the incoming runner cannot touch the baton after it has left the zone. The zone is usually marked in yellow, frequently using lines, triangles or chevrons. While the rule book specifies the exact positioning of the marks, the colors and style are only "recommended". While most legacy tracks will still have the older markings, the rule change still uses existing marks. Not all governing body jurisdictions have adopted the rule change.
The 2017 European Athletics U23 Championships is the 11th edition of the biennial athletics competition between European athletes under the age of twenty-three. It is held in Bydgoszcz, Poland from 13 to 16 July. This is the second time that the competition is being hosted by Bydgoszcz after the 2003 edition.
Bydgoszcz is a city in northern Poland, on the Brda and Vistula rivers. With a city population of 358,614, and an urban agglomeration with more than 470,000 inhabitants, Bydgoszcz is the eighth-largest city in Poland. It has been the seat of Bydgoszcz County and the co-capital, with Toruń, of the Kuyavian-Pomeranian Voivodeship since 1999. Prior to this, between 1947 and 1998, it was the capital of the Bydgoszcz Voivodeship, and before that, of the Pomeranian Voivodeship between 1945 and 1947.
