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Age?
Most recent marathon time (seconds)?
Average weekly distance (kilometers) before recent major race?
Length of training plan (weeks)?
Did you use any of these popular training plans?
Recent 5K race time (seconds)?
Recent 10K race time (seconds)?
Recent half marathon time (seconds)?
Recent 1 mile (1.609K) race time (seconds)?
Other recent race distance (kilometers)?
Time for this distance (seconds)?