A heat wave coupled with a difficult course found runners on Saturday at the World XC Championships in Belgrade, Serbia.

How did Team U.S. fare? 

The top outright American finisher from any race was Weini Kelati, who was 15th in the women's senior field. 

Kelati, 27, has done a little bit of everything this year. The University of New Mexico alum completed a half marathon in January in Houston, clocked a 10K time of 30:33 on March 16 and then followed on Saturday with a performance to lead Team U.S. 

Not bad. 

Anthony Rotich led the American men in 29:22, while the U20 contingent saw Ellie Shea and Kevin Sanchez take charge, authoring fourth- and seventh-place finishes in the team races. 

Check the American results below. 

World U20 Women's Race: 

Team Finish: 4th

15. Ellie Shea, 20:50

16. Allie Zealand, 21:08

28. Mary Bonner Dalton, 21:40

29. Zariel Macchia, 21:42

41. Jolena Quarzo, 22:13

49. Maddie Gardiner, 22:36

World U20 Men's Race: 

Team Finish: 7th

24. Kevin Sanchez, 24:31

30. Kole Mathison, 24:49

45. Noah Breker, 25:22

54. Aidan Jones, 25:48

68. Birhanu Harrman, 26:13

Berkley Nance, DNF

World XC Mixed Relay: 

Team Finish: 8th, 23:21

Kasey Knevelbaard

Ella Donaghu

Johnathan Reniewicki

Katie Izzo

World XC Women's Senior Race: 

Team Finish: 4th

15. Weini Kelati, 32:53

30. Allie Ostrander, 34:11

33. Abby Nichols, 34:27

35. Emma Grace Hurley, 34:32

58. Cailie Logue, 36:14

Katie Camarena, DNF

World XC Men's Senior Race: 

Team Finish: 7th

22. Anthony Rotich, 29:22

25. Emmanuel Bor, 29:37

36. Ahmed Muhumed, 29:53

37. Christian Allen, 29:54

52. Anthony Camerieri, 30:21

58. Reid Buchanan, 30:27