Catalina Spas 21' Marathon
Last updated: October 2026
Catalina Spas 21' Marathon price: manufacturer MSRP $52,499.
What Buyers Are Paying
Manufacturer's suggested retail price. Most buyers pay less — request a quote to see real local pricing.
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Questions about the Catalina Spas 21' Marathon
Ask here — Christian Schrader answers on Ask the Pros. You can also leave a comment about this model.
Questions other swim spa shoppers asked
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Is a swim spa cheaper than a pool?
Up front, a swim spa is almost always less expensive than an in-ground pool. Installed swim spa projects typically land between $25,000 and…
-
Can you use a swim spa in winter?
Year-round use in a freezing climate is one of the main reasons buyers choose a swim spa, and units are built for it. What matters in cold…
-
What size swim spa should I buy?
Length is the spec that changes how the swim spa actually feels to swim in. - **12-14 ft:** Resistance and aquatic exercise, kids playing…
Ask the first question about the Catalina Spas 21' Marathon.
Key Specifications
Seats
8
Dimensions
248"x90"x54"
Volume
2450 gal
Zones
Dual Zone
How much does the Catalina Spas 21' Marathon cost?
The Catalina Spas 21' Marathon carries a list price of $52,499. Delivered cost usually lands above that once site prep, electrical hookup, steps and a cover lifter are added, and below it when a dealer is clearing floor models.
Specs driving that price: 6 pumps, a 248"x90"x54" footprint, 220v power. Larger cabinets, more pumps and higher jet counts push both list price and running cost up.
At $52,499 MSRP, the 21' Marathon sits at the top of the Catalina Spas swim spa lineup, which lists from $24,599 to $45,799.
Worth comparing: Catalina Spas 21' Pool. See the full Catalina Spas lineup.
Questions about the Catalina Spas 21' Marathon
Ask here — Christian Schrader answers on Ask the Pros. You can also leave a comment about this model.
Questions other swim spa shoppers asked
-
Is a swim spa cheaper than a pool?
Up front, a swim spa is almost always less expensive than an in-ground pool. Installed swim spa projects typically land between $25,000 and…
-
Can you use a swim spa in winter?
Year-round use in a freezing climate is one of the main reasons buyers choose a swim spa, and units are built for it. What matters in cold…
-
What size swim spa should I buy?
Length is the spec that changes how the swim spa actually feels to swim in. - **12-14 ft:** Resistance and aquatic exercise, kids playing…
-
How much does a swim spa cost?
Most swim spas sell between roughly $20,000 and $45,000 before delivery, electrical work, and site prep. The rough tiers look like this…
-
How do you maintain swim spa water?
The routine is the same as a hot tub, just applied to a much larger volume of water — which actually makes chemistry a bit more stable, not…
Ask the first question about the Catalina Spas 21' Marathon.
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Performance Ratings
Swim Level
Recreational
Propulsion
Jetted (Air Induction)
Full Specifications
Questions about the Catalina Spas 21' Marathon
Ask here — Christian Schrader answers on Ask the Pros. You can also leave a comment about this model.
Questions other swim spa shoppers asked
-
Is a swim spa cheaper than a pool?
Up front, a swim spa is almost always less expensive than an in-ground pool. Installed swim spa projects typically land between $25,000 and…
-
Can you use a swim spa in winter?
Year-round use in a freezing climate is one of the main reasons buyers choose a swim spa, and units are built for it. What matters in cold…
-
What size swim spa should I buy?
Length is the spec that changes how the swim spa actually feels to swim in. - **12-14 ft:** Resistance and aquatic exercise, kids playing…
Ask the first question about the Catalina Spas 21' Marathon.
User-Reported Pricing
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