The 2017–18 ISU Challenger Series was held from September to December 2017. It was the fourth season that the ISU Challenger Series, a group of senior-level international figure skating competitions, was held.

This season, the series included the following events.^[1]

Date	Event	Location	Results
September 13–17	2017 U.S. International Classic	Salt Lake City, Utah, United States	Details
September 14–17	2017 Lombardia Trophy	Bergamo, Italy	Details
September 20–23	2017 Autumn Classic International	Montreal, Quebec, Canada	Details
September 21–23	2017 Ondrej Nepela Trophy	Bratislava, Slovakia	Details
September 27–30	2017 Nebelhorn Trophy	Oberstdorf, Germany	Details
October 6–8	2017 Finlandia Trophy	Espoo, Finland	Details
October 27–29	2017 Minsk-Arena Ice Star	Minsk, Belarus	Details
November 16–19	2017 Warsaw Cup	Warsaw, Poland	Details
November 21–26	2017 Tallinn Trophy	Tallinn, Estonia	Details
December 6–9	2017 Golden Spin of Zagreb	Zagreb, Croatia	Details

Competition	Gold	Silver	Bronze	Results
U.S. International Classic	Nathan Chen	Max Aaron	Liam Firus	Details
Lombardia Trophy	Shoma Uno	Jason Brown	Brendan Kerry	Details
Autumn Classic International	Javier Fernández	Yuzuru Hanyu	Keegan Messing	Details
Ondrej Nepela Trophy	Mikhail Kolyada	Sergei Voronov	Brendan Kerry	Details
Nebelhorn Trophy	Jorik Hendrickx	Alexander Johnson	Alexander Majorov	Details
Finlandia Trophy	Jin Boyang	Vincent Zhou	Adam Rippon	Details
Minsk-Arena Ice Star	Sergei Voronov	Moris Kvitelashvili	Daniel Samohin	Details
Warsaw Cup	Matteo Rizzo	Stéphane Walker	Liam Firus	Details
Tallinn Trophy	Dmitri Aliev	Alexei Krasnozhon	Yaroslav Paniot	Details
Golden Spin of Zagreb	Moris Kvitelashvili	Oleksii Bychenko	Artur Dmitriev, Jr.	Details

Competition	Gold	Silver	Bronze	Results
U.S. International Classic	Marin Honda	Mirai Nagasu	Karen Chen	Details
Lombardia Trophy	Alina Zagitova	Wakaba Higuchi	Carolina Kostner	Details
Autumn Classic International	Kaetlyn Osmond	Mai Mihara	Elizabet Tursynbaeva	Details
Ondrej Nepela Trophy	Evgenia Medvedeva	Rika Hongo	Elena Radionova	Details
Nebelhorn Trophy	Kailani Craine	Matilda Algotsson	Alexia Paganini	Details
Finlandia Trophy	Maria Sotskova	Carolina Kostner	Elizaveta Tuktamysheva	Details
Minsk-Arena Ice Star	Elizabet Tursynbaeva	Serafima Sakhanovich	An So-hyun	Details
Warsaw Cup	Serafima Sakhanovich	Stanislava Konstantinova	Courtney Hicks	Details
Tallinn Trophy	Stanislava Konstantinova	Alisa Fedichkina	Nicole Schott	Details
Golden Spin of Zagreb	Stanislava Konstantinova	Alisa Fedichkina	Elizaveta Tuktamysheva	Details

Competition	Gold	Silver	Bronze	Results
U.S. International Classic	Kirsten Moore-Towers / Michael Marinaro	Alexa Scimeca Knierim / Chris Knierim	Chelsea Liu / Brian Johnson	Details
Lombardia Trophy	Natalia Zabiiako / Alexander Enbert	Nicole Della Monica / Matteo Guarise	Valentina Marchei / Ondřej Hotárek	Details
Autumn Classic International	Vanessa James / Morgan Ciprès	Meagan Duhamel / Eric Radford	Julianne Séguin / Charlie Bilodeau	Details
Ondrej Nepela Trophy	Natalia Zabiiako / Alexander Enbert	Kristina Astakhova / Alexei Rogonov	Alisa Efimova / Alexander Korovin	Details
Nebelhorn Trophy	Evgenia Tarasova / Vladimir Morozov	Aliona Savchenko / Bruno Massot	Ekaterina Alexandrovskaya / Harley Windsor	Details
Finlandia Trophy	Peng Cheng / Jin Yang	Nicole Della Monica / Matteo Guarise	Ksenia Stolbova / Fedor Klimov	Details
Minsk-Arena Ice Star	Aleksandra Boikova / Dmitrii Kozlovskii	Annika Hocke / Ruben Blommaert	Paige Conners / Evgeni Krasnopolski	Details
Warsaw Cup	Valentina Marchei / Ondřej Hotárek	Aleksandra Boikova / Dmitrii Kozlovskii	Minerva Fabienne Hase / Nolan Seegert	Details
Tallinn Trophy	Ekaterina Alexandrovskaya / Harley Windsor	Alisa Efimova / Alexander Korovin	Anastasia Poluianova / Dmitry Sopot	Details
Golden Spin of Zagreb	Natalia Zabiiako / Alexander Enbert	Kristina Astakhova / Alexei Rogonov	Tarah Kayne / Danny O'Shea	Details

Competition	Gold	Silver	Bronze	Results
U.S. International Classic	Madison Hubbell / Zachary Donohue	Kaitlin Hawayek / Jean-Luc Baker	Kana Muramoto / Chris Reed	Details
Lombardia Trophy	Charlène Guignard / Marco Fabbri	Alla Loboda / Pavel Drozd	Oleksandra Nazarova / Maxim Nikitin	Details
Autumn Classic International	Tessa Virtue / Scott Moir	Kaitlyn Weaver / Andrew Poje	Piper Gilles / Paul Poirier	Details
Ondrej Nepela Trophy	Ekaterina Bobrova / Dmitri Soloviev	Rachel Parsons / Michael Parsons	Betina Popova / Sergey Mozgov	Details
Nebelhorn Trophy	Penny Coomes / Nicholas Buckland	Kana Muramoto / Chris Reed	Kavita Lorenz / Joti Polizoakis	Details
Finlandia Trophy	Gabriella Papadakis / Guillaume Cizeron	Alexandra Stepanova / Ivan Bukin	Laurence Fournier Beaudry / Nikolaj Sørensen	Details
Minsk-Arena Ice Star	Anna Cappellini / Luca Lanotte	Tiffany Zahorski / Jonathan Guerreiro	Victoria Sinitsina / Nikita Katsalapov	Details
Warsaw Cup	Betina Popova / Sergey Mozgov	Lorraine McNamara / Quinn Carpenter	Oleksandra Nazarova / Maxim Nikitin	Details
Tallinn Trophy	Natalia Kaliszek / Maksym Spodyriev	Alisa Agafonova / Alper Uçar	Elliana Pogrebinsky / Alex Benoit	Details
Golden Spin of Zagreb	Ekaterina Bobrova / Dmitri Soloviev	Charlène Guignard / Marco Fabbri	Kaitlin Hawayek / Jean-Luc Baker	Details

Rank	Nation	Gold	Silver	Bronze	Total
1	Russia (RUS)	17	12	9	38
2	Italy (ITA)	4	4	2	10
3	Canada (CAN)	3	2	5	10
4	United States (USA)	2	10	7	19
5	Japan (JPN)	2	5	1	8
6	Australia (AUS)	2	0	3	5
7	China (CHN)	2	0	0	2
	France (FRA)	2	0	0	2
9	Georgia (GEO)	1	1	0	2
10	Kazakhstan (KAZ)	1	0	1	2
11	Belgium (BEL)	1	0	0	1
	Great Britain (GBR)	1	0	0	1
	Poland (POL)	1	0	0	1
	Spain (ESP)	1	0	0	1
15	Germany (GER)	0	2	3	5
16	Israel (ISR)	0	1	2	3
17	Sweden (SWE)	0	1	1	2
	Switzerland (SUI)	0	1	1	2
19	Turkey (TUR)	0	1	0	1
20	Ukraine (UKR)	0	0	3	3
21	Denmark (DEN)	0	0	1	1
	South Korea (KOR)	0	0	1	1
Totals (22 entries)		40	40	40	120

The ISU Challenger Series rankings were formed by combining the two highest final scores of each skater or team.^[1]

No.	Skater	Nation	First event	Score	Second event	Score	Total score[2]
1	Mikhail Kolyada	Russia	Ondrej Nepela Trophy	247.81	Finlandia Trophy	248.50	496.31
2	Sergei Voronov			234.07	Minsk-Arena Ice Star	250.10	484.17
3	Moris Kvitelashvili	Georgia	Minsk-Arena Ice Star	227.31	Golden Spin of Zagreb	236.67	463.98
4	Matteo Rizzo	Italy	Lombardia Trophy	227.02	Warsaw Cup	232.98	460.00
5	Yaroslav Paniot	Ukraine	U.S. International Classic	233.16	Tallinn Trophy	221.23	454.39

No.	Skater	Nation	First event	Score	Second event	Score	Total score[3]
1	Carolina Kostner	Italy	Lombardia Trophy	198.36	Finlandia Trophy	193.76	392.12
2	Stanislava Konstantinova	Russia	Tallinn Trophy	190.75	Golden Spin of Zagreb	199.68	390.43
3	Elizaveta Tuktamysheva		Lombardia Trophy	184.75	Finlandia Trophy	189.13	373.88
4	Elizabet Tursynbaeva	Kazakhstan	Autumn Classic International	181.00	Minsk-Arena Ice Star	187.57	368.57
5	Alisa Fedichkina	Russia	Tallinn Trophy	180.33	Golden Spin of Zagreb	178.20	358.53

No.	Team	Nation	First event	Score	Second event	Score	Total score[4]
1	Natalia Zabiiako / Alexander Enbert	Russia	Lombardia Trophy	196.06	Golden Spin of Zagreb	202.96	399.02
2	Nicole Della Monica / Matteo Guarise	Italy		191.39	Finlandia Trophy	193.50	384.89
3	Kristina Astakhova / Alexei Rogonov	Russia	Ondrej Nepela Trophy	191.12	Golden Spin of Zagreb	186.62	377.74
4	Valentina Marchei / Ondřej Hotárek	Italy	Lombardia Trophy	180.86	Warsaw Cup	193.14	374.00
5	Aleksandra Boikova / Dmitrii Kozlovskii	Russia	Minsk-Arena Ice Star	191.58		180.84	372.42

No.	Team	Nation	First event	Score	Second event	Score	Total score[5]
1	Ekaterina Bobrova / Dmitri Soloviev	Russia	Ondrej Nepela Trophy	181.92	Golden Spin of Zagreb	186.66	368.58
2	Charlène Guignard / Marco Fabbri	Italy	Lombardia Trophy	169.30		178.16	347.46
3	Tiffany Zahorski / Jonathan Guerreiro	Russia	Minsk-Arena Ice Star	169.81		157.84	327.65
4	Betina Popova / Sergey Mozgov		Ondrej Nepela Trophy	161.92	Warsaw Cup	164.07	325.99
5	Kaitlin Hawayek / Jean-Luc Baker	United States	U.S. International Classic	153.55	Golden Spin of Zagreb	163.88	317.43

Top 10 best scores in the men's combined total

No.	Skater	Nation	Score	Event
1	Shoma Uno	Japan	319.84	2017 Lombardia Trophy
2	Javier Fernández	Spain	279.07	2017 Autumn Classic International
3	Nathan Chen	United States	275.04	2017 U.S. International Classic
4	Yuzuru Hanyu	Japan	268.24	2017 Autumn Classic International
5	Max Aaron	United States	261.56	2017 U.S. International Classic
6	Jason Brown		259.88	2017 Lombardia Trophy
7	Jorik Hendrickx	Belgium	253.06	2017 Nebelhorn Trophy
8	Jin Boyang	China	252.60	2017 Finlandia Trophy
9	Sergei Voronov	Russia	250.10	2017 Minsk-Arena Ice Star
10	Vincent Zhou	United States	250.01	2017 Finlandia Trophy

Top 10 best scores in the ladies' combined total

No.	Skater	Nation	Score	Event
1	Evgenia Medvedeva	Russia	226.72	2017 Ondrej Nepela Trophy
2	Alina Zagitova		218.46	2017 Lombardia Trophy
3	Wakaba Higuchi	Japan	217.63
4	Kaetlyn Osmond	Canada	217.55	2017 Autumn Classic International
5	Maria Sotskova	Russia	205.30	2017 Finlandia Trophy
6	Stanislava Konstantinova		199.68	2017 Golden Spin of Zagreb
7	Mai Mihara	Japan	199.02	2017 Autumn Classic International
8	Marin Honda		198.42	2017 U.S. International Classic
9	Carolina Kostner	Italy	198.36	2017 Lombardia Trophy
10	Bradie Tennell	United States	196.70

Top 10 best scores in the pairs' combined total

No.	Team	Nation	Score	Event
1	Evgenia Tarasova / Vladimir Morozov	Russia	218.46	2017 Nebelhorn Trophy
2	Aliona Savchenko / Bruno Massot	Germany	211.08
3	Vanessa James / Morgan Ciprès	France	210.48	2017 Autumn Classic International
4	Meagan Duhamel / Eric Radford	Canada	202.98
5	Natalia Zabiiako / Alexander Enbert	Russia	202.96	2017 Golden Spin of Zagreb
6	Peng Cheng / Jin Yang	China	198.03	2017 Finlandia Trophy
7	Nicole Della Monica / Matteo Guarise	Italy	193.50
8	Valentina Marchei / Ondřej Hotárek		193.14	2017 Warsaw Cup
9	Aleksandra Boikova / Dmitrii Kozlovskii	Russia	191.58	2017 Minsk-Arena Ice Star
10	Kristina Astakhova / Alexei Rogonov		191.12	2017 Ondrej Nepela Trophy

Top 10 best scores in the combined total (ice dance)

No.	Team	Nation	Score	Event
1	Tessa Virtue / Scott Moir	Canada	195.76	2017 Autumn Classic International
2	Gabriella Papadakis / Guillaume Cizeron	France	188.25	2017 Finlandia Trophy
3	Ekaterina Bobrova / Dmitri Soloviev	Russia	186.66	2017 Golden Spin of Zagreb
4	Anna Cappellini / Luca Lanotte	Italy	183.49	2017 Minsk-Arena Ice Star
5	Madison Hubbell / Zachary Donohue	United States	178.80	2017 U.S. International Classic
6	Charlène Guignard / Marco Fabbri	Italy	178.16	2017 Golden Spin of Zagreb
7	Penny Coomes / Nicholas Buckland	Great Britain	177.13	2017 Nebelhorn Trophy
8	Kaitlyn Weaver / Andrew Poje	Canada	173.56	2017 Autumn Classic International
9	Piper Gilles / Paul Poirier		172.26
10	Tiffany Zahorski / Jonathan Guerreiro	Russia	169.81	2017 Minsk-Arena Ice Star

• ISU Challenger Series at the International Skating Union