Prieto was born in Segovia, and made his international debut at the 1983 European Athletics Junior Championships, placing fifth in the 10,000 m walk.<unk> Prieto was born in Segovia, and made his international debut at the 1983 European Athletics Junior Championships, placing fifth in the 10,000 m walk.<unk> Prieto was born in Segovia, and made his international debut at the 1983 European Athletics Junior Championships, placing fifth in the 10,000 m walk. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ Prieto won his second international medal at the 1989 Summer Universiade, where he was the silver medalist in the 20 km walk behind Italy's Walter Arena.<unk> Prieto won his second international medal at the 1989 Summer Universiade, where he was the silver medalist in the 20 km walk behind Italy's Walter Arena.<unk> Prieto won his second international medal at the 1989 Summer Universiade, where he was the silver medalist in the 20 km walk behind Italy's Walter Arena. ️<unk>️<unk>️<unk>️
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