evo Denver has rental bikes ranging from $20/day for cruiser bikes to $80/day for ebike rentals (i.e. electric bike rentals). You can view our whole rental fleet and book online here: https://www.evo.com/locations/denver/services/bike-rentals
evo rents cruiser bikes for $20 & hybrids for $30 if returned by close, +$10 if keeping for 24 hours. https://www.evo.com/locations/denver/services/bike-rentals#book-online
I don't think they rent bikes. I'd call though, they may be able to point you in the right direction.
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