Goddard was born in Barbados and raised in England. She was a member of the Reading Athletic Club. In 1976, she competed at the Montreal Olympics, reaching the quarter finals of the 200 metres.
In 1978, she finished fourth in the 200 metres final at the Commonwealth Games in Edmonton, before winning gold in the 4 × 100 m relay along with Kathy Smallwood, Sharon Colyear and Sonia Lannaman. At the European Championshsips in Prague, the same quartet won a silver medal behind the Soviet Union and ahead of East Germany. In 1979, she won three medals at the World Student Games (Universiade), with bronze in the 100 and 200 metres and silver in the sprint relay. In the 100 metres, she ran her lifetime best of 11.22 seconds in the semifinal.
At the 1980 Moscow Olympic Games, she was one of three British woman who reached the 200 m final, finishing sixth in a lifetime best of 22.72 seconds. Kathy Smallwood was fifth and Sonia Lannaman eighth. The three then teamed up with 100 metres finalist Heather Hunte, to win the bronze medal in the 4 × 100 m relay. The quartet ran a UK record of 42.43 secs, which stood until 2014. Her biggest individual success came in 1981, when she won the World Student Games title at 100 metres, defeating the Soviet sprinters Olga Zolotaryeva and Olga Nasonova. She also won a silver medal in the relay.
In 1982, now competing as Beverley Callender, she reached the 200 metres finals at both the European Championships in Athens and the Commonwealth Games in Brisbane, finishing fifth (22.91 secs) and sixth (22.92 secs) respectively. In Prague, she teamed up with Wendy Hoyte, Smallwood and Shirley Thomas to win relay silver, while in Brisbane, she won relay gold with Hoyte, Smallwood and Sonia Lannaman. A year later, she won a relay silver medal at the inaugural World Championships in Helsinki, along with Joan Baptiste, Kathy Cook (Smallwood) and Shirley Thomas. She also competed in the 100 metres. At her third Olympic Games in Los Angeles 1984, she won her second Olympic bronze medal, reuniting with two of her three teammates from Moscow, Heather Oakes (Hunte) and Kathy Cook. The fourth squad member was Simmone Jacobs.
From 1978-1984, the British or English women's sprint relay squads won a medal at every Olympic, World, European and Commonwealth competition, both Callender and Kathy Cook were a member of every team. She usually ran the third leg and became a specialist in this position. 1984 would be the last time for 29 years, that the British Women's 4 × 100 m squad won a medal at Olympic or World level. This ended in 2013 when they won bronze at the World Championships.
In domestic competition, at the AAAs National Championships and UK Championships, she had eight second-place finishes. At the AAAs she was second in 1978 (100m), 1979, 1982 and 1984 (200m). At the UKs, she was second in 1978 (100m & 200m), 1979 (100m) and 1982 (100m). She did win the 1982 UK title at 200 metres.
As of 2016, Callender's 200 metres best, ranks her 10th on the UK all-time list. In the 100 metres she ranks 19th. Now a teacher, she is still active at Reading Athletic Club and is found each week coaching athletes there.100 metres – 11.22 (1979)
200 metres – 22.72 (1980)
4×100 metres – 42.43 (1980) former NR
UK Championships in Athletics
200 metres: 1982