Suki rode her bike a longer distance than Claire because when comparing each of their distances to the benchmark of 1/2 mile, Suki's distance (4/5 mile) is greater than the benchmark (1/2 mile), while Claire's distance (1/3 mile) is less than the benchmark. Therefore, Suki rode a longer distance than Claire in relation to the benchmark.
Suki's Distance with Benchmark (1/2):
Suki rode her bike for 4/5 miles.
The benchmark is 1/2 mile.
Comparison:

Interpretation: Suki's distance ( 4/5 miles) is greater than the benchmark 1/2 mile.
Claire's Distance with Benchmark (1/2):
Claire rode her bike for 1/3 mile.
The benchmark is 1/2 mile.
Comparison:

Interpretation: Claire's distance ( 1/3 mile) is less than the benchmark 1/2 mile.
Overall Comparison:
Suki's distance (4/5) is greater than Claire's distance (1/3).
Interpretation: Suki rode her bike a longer distance than Claire.
In summary, both Suki and Claire are comparing their distances to the benchmark of 1/2 mile. Suki's distance is greater than the benchmark, while Claire's distance is less than the benchmark. Therefore, Suki rode a longer distance than Claire.