Reigning Olympic champion Ruth Jebet was among the winners today at the International Association of Athletics Federations Cross Country Permit race in Elgoibar.
Jebet, who switched nationality from Kenya to Bahrain when aged 16, won 3,000 metres steeplechase gold at Rio 2016 and also holds the world record of 8min 52.78sec over the barriers.
The 21-year showed her prowess over mud and far longer distances today by winning the 7.6km women's race in a time of 27min 15sec.
Kenya's Agnes Tirop finished in second place, 15 seconds off the pace.
Her fellow countrywoman Lilian Rengeruk took third position a further 38 seconds behind.
Tirop won 10,000m bronze at this year's World Championships in London while Rengeruk has already won cross-country races this season in Eldoret and the Italian commune of San Giorgio su Legnano, close to Milan.
Ethiopian youngster Selemon Barega, 17, won the corresponding 10.7km men's race today.
The under-18 3,000m and under-20 5,000m world champion continued his unbeaten form this season following wins in Allonnes, France, and Venta de Baños, Spain.
He crossed in 33:54 to finish in front of two Ugandan rivals.
Jacob Kiplimo finished second, two seconds behind, while Timothy Toroitich took bronze another 27 seconds back.
Kenya's reigning Olympic 3,000m steeplechase champion Conseslus Kipruto finished fifth.