The overall duration isn't a very relevant question in my opinion. More relevant would be whether you can ride repeated efforts for 1-2 laps at circa 45 - 50 km/h, and 10-15 laps at circa 40-45 km/h.
@deleted started
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The overall duration isn't a very relevant question in my opinion. More relevant would be whether you can ride repeated efforts for 1-2 laps at circa 45 - 50 km/h, and 10-15 laps at circa 40-45 km/h.