Gambling on the Olympics is legal in the United States for the first time since 2000. We used European betting aggregator Oddschecker to find the best odds available for the athletes in each Olympic track event, and gave a few quick takes below.

Women's 100m	Odds to win
Dafne Schippers	2/1
Elaine Thompson	3/1
Shelly-Ann Fraser-Pryce	59/10
Tori Bowie	6/1
English Gardner	8/1
Marie-Josee Ta Lou	20/1
Tianna Bartoletta	30/1
Murielle Ahoure	50/1
Blessing Okagbare	66/1
Michelle-Lee Ahye	66/1

​Quick take: The three Americans at 6/1, 8/1, and 30/1 are tempting, and also perfectly appealing to a giant homer.

Women's 200m	Odds to win
Dafne Schippers	8/13
Elaine Thompson	22/5
Tori Bowie	7/1
Shaunae Miller	25/1
Dina Asher-Smith	60/1
Blessing Okagbare	66/1
Murielle Ahoure	66/1
Michelle-Lee Ahye	80/1
Marie Josee Ta Lou	100/1
Veronica Campbell-Brown	100/1
Jenna Prandini	100/1
Deajah Stevens	100/1

Women's 400m	Odds to win
Allyson Felix	6/5
Shaunae Miller	23/10
Phyllis Francis	33/1
Shericka Jackson	50/1
Natasha Hastings	50/1
Stephanie McPherson	50/1
Christine Ohuruogu	66/1

Quick take: Before she pulled out, Caster Semenya was 4/1 to win this race. An enterprising young blogger could have paid several months' rent. Alas.

Women's 800m	Odds to win
Caster Semenya	1/8
Francine Niyonsaba	12/1
Margaret Wambui	16/1
Eunice Sum	33/1
Nataliya Pryshchepa	33/1
Melissa Bishop	50/1
Tigist Assefa	60/1
Habitam Alemu	66/1
Renelle Lamote	66/1
Maryna Arzamasava	80/1
Rose Mary Almanza	80/1
Sahily Diago	80/1
Gudaf Tsegay	100/1
Winnie Chebet	100/1
Chrishuna Williams	100/1
Ajee Wilson	100/1
Kate Grace	100/1

Women's 1500m	Odds to win
Faith Kipyegon	6/5
Genzebe Dibaba	13/10
Laura Muir	12/1
Dawit Seyaum	20/1
Sifan Hassan	20/1
Meraf Bahta	25/1
Angelika Cichocka	30/1
Jenny Simpson	66/1
Besu Sado	66/1
Nancy Chepkwemoi	66/1
Shannon Rowbury	80/1
Viola Lagat	100/1
Rababe Arafi	100/1
Luiza Gega	100/1
Maureen Koster	150/1
Brenda Martinez	150/1
Laura Weightman	150/1
Linden Hall	150/1

Quick take: Dibaba--the world record holder and defending world champion--isn't even the favorite. That happened fast.

Women's 3000m steeplechase	Odds to win
Hyvin Kiyeng Jepkemoi	21/20
Ruth Jebet	6/4
Habiba Ghribi	10/1
Emma Coburn	33/1
Gesa Felicitas Krause	33/1
Beatrice Chepkoech	33/1
Etenesh Diro Neda	33/1
Sofia Assefa	35/1
Etenesh Diro	40/1
Courtney Frerichs	66/1
Hiwot Ayalew	66/1
Lydia Rotich	66/1
Lalita Shivaji Babar	100/1
Colleen Quigley	100/1

Women's 5000m	Odds to win
Almaz Ayana	1/10
Helen Obiri	12/1
Vivian Cheruiyot	16/1
Mercy Cherono	20/1
Senbere Teferi	33/1
Ababel Yeshaneh	66/1
Yasmin Can	66/1
Meraf Bahta	100/1
Meryem Akda	100/1
Karoline Bjerkeli Grovdal	150/1
Abbey D'Agostino	150/1
Eloise Wellings	200/1
Ayuko Suzuki	200/1
Mimi Belete	200/1
Kim Conley	200/1
Misaki Onishi	200/1
Shelby Houlihan	200/1
Steph Twell	250/1
Susan Kuijken	250/1
Genevieve LaCaze	500/1

Women's 10000m	Odds to win
Almaz Ayana	4/9
Tirunesh Dibaba	22/5
Vivian Cheruiyot	27/2
Alice Aprot	20/1
Gelete Burka	33/1
Betsy Saina	70/1
Yasmine Can	70/1
Emily Infeld	100/1
Molly Huddle	100/1
Ana Dulce Felix	100/1
Karoline Grovdal	100/1
Susan Kuijken	200/1
Brenda Flores	200/1
Kasumi Nishihara	200/1
Lanni Marchant	200/1
Natasha Wodak	200/1
Rei Ohara	200/1
Yuka Takashima	200/1
Jip Vastenburg	250/1
Marielle Hall	250/1

Women's 100m hurdles	Odds to win
Brianna Rollins	4/9
Nia Ali	6/1
Kristi Castlin	15/2
Danielle Williams	8/1
Cindy Roleder	16/1
Alina Talay	25/1
Tiffany Porter Ofili	50/1
Susanna Kallur	50/1
Cindy Billaud	66/1
Jasmine Camacho-Quinn	100/1
Cindy Ofili	100/1

Women's 400m hurdles	Odds to win
Dalilah Muhammad	13/8
Zuzana Hejnova	3/1
Janieve Russell	5/1
Eilidh Doyle	16/1
Sara Peterson	22/1
Kaliese Spencer	25/1
Sydney McLaughlin	25/1
Ashley Spencer	25/1
Kemi Adekoya	50/1
Denisa Rosolova	66/1

Women's 4x100m	Odds to win
Jamaica	19/20
USA	7/4
Trinidad And Tobago	20/1
Great Britain	28/1
Netherlands	33/1
Great Britain	33/1
Ghana	100/1
Nigeria	100/1
Germany	100/1
Canada	100/1
Brazil	125/1
Italy	150/1
Kazakhstan	200/1
China	200/1

Women's 4x400m	Odds to win
USA	8/15
Jamaica	27/10
Great Britain	55/1
France	90/1
Nigeria	90/1
Belgium	90/1
Ukraine	100/1
Germany	150/1
Bahamas	150/1
Romania	150/1
Poland	150/1
Canada	150/1

Women's marathon	Odds to win
Mare Dibaba	7/2
Helah Kiprop	5/1
Jemina Sumgong	11/2
Tirfi Tsegaye	6/1
Tigist Tufa	8/1
Visiline Jepkesho	8/1
Eunice Jepkirui Kirwa	9/1
Tomoni Tamaka	20/1
Shalane Flanagan	25/1
Volha Mazuronak	25/1
Kayoko Fukushi	25/1
Mai Ito	50/1
Amy Cragg	90/1
Desi Linden	90/1

Quick take: I should not be permitted to disburse any funds betting on Shalane Flanagan.