Top 5 Places to Paddleboard in Mammoth Lakes, California (2026 Guide)
Five alpine lakes inside a four-mile radius. Cold water, Sierra granite, and a paddle season that runs from snowmelt to first frost.
The five best paddleboard spots in Mammoth Lakes are Twin Lakes (the easiest launch with marina access), Lake Mary (the largest lake in the basin), Horseshoe Lake (a no-motor alpine bowl with a haunting dead forest), Lake George (the quieter family spot below Crystal Crag), and Convict Lake (a dramatic mountain-backed lake just south of town). Mammoth sits at 7,880 feet in California's eastern Sierra, which means colder water than Tahoe, a shorter season, and stronger sun. The reward is a paddle scene most California paddlers never experience: glassy alpine lakes ringed by granite peaks, all reachable from a single basecamp in town.
Mammoth Lakes is a destination paddle. The water doesn't open up until snowmelt finishes, usually late June. By mid-October the lakes start freezing over again. Inside that window the conditions are some of the most photogenic you'll find anywhere in California, and the five lakes below cover every skill level from first-timer to multi-mile touring paddler.
For other Sierra and NorCal options, see the Lake Tahoe paddleboarding guide and the Northern California round-up.
1. Twin Lakes
Twin Lakes is the gateway to the Mammoth Lakes Basin and the most accessible paddle spot in the area. Two connected lakes sit just inside the basin entrance, with a small dam between them and Twin Falls cascading off the back end of the upper lake. Tamarack Lodge sits on the shoreline and provides paddleboard and kayak rentals during summer.
The launch is straightforward. There's a small public dock and a boat ramp near the lodge, with parking close enough that you don't have to carry your board far. Water is generally calm in the morning. By midday, mountain afternoon winds can build and create chop on the larger lower lake. The upper lake stays calmer because it's smaller and more enclosed.
Motorized boats are restricted to 10 mph, and most use is non-motorized in practice (kayaks, canoes, paddleboards, fishing boats). The shoreline scenery is some of the best in the basin: pine forest descending to clear water with granite peaks behind. Trail access from the lakes connects to the Mammoth Lakes Recreation Trail system, so it's a popular spot for combination paddle-and-hike days.
Best for: beginners, first-time Mammoth paddlers, families. Paddle rentals available on-site. Conditions: Calm mornings, afternoon wind on the lower lake. Twin Falls visible from the upper lake.
2. Lake Mary
Lake Mary is the largest lake in the Mammoth Lakes Basin and the most well-known. It covers about 130 acres at full pool, has cabins and a small marina along its eastern shore (Pokonobe Resort), and connects via short paths and roads to most of the other basin lakes. If you want a longer paddle in the basin, this is where to do it.
Launch points include the Pokonobe Resort marina (with a small fee for non-guests in some seasons), the Crystal Crag Lodge dock, and a public picnic-area access on the southwestern shore. Parking is generally easier here than at Twin Lakes because the basin road provides multiple pullouts.
Lake Mary holds water at higher elevation, which keeps surface temperatures noticeably colder than Twin Lakes. Even in mid-July, expect water in the high 50s°F to low 60s°F. A wetsuit isn't strictly required for paddling, but it's worth bringing one if you plan to be on the water for more than an hour or want backup if you fall in.
The lake is open to motors with a 10 mph speed limit, and motor traffic is light. Fishing is the main activity besides paddling. Trout boats give paddleboards a wide berth as a rule.
Best for: intermediate paddlers, longer distance paddles in the basin, scenic photography. Conditions: Cold water, light motor traffic, AM glass.
3. Horseshoe Lake
Horseshoe Lake is the strangest spot on this list, and one of the most memorable. It sits at the back of the basin, ringed by a forest of dead pine trees. The trees were killed by CO2 venting from the volcanic system underneath the area in the 1990s. Walking and paddling here feels otherworldly, especially on overcast mornings.
What matters for paddlers: Horseshoe Lake has no motors of any kind. It's the calmest, quietest paddle in the entire basin. The shoreline is short enough that a full perimeter circumnavigation runs roughly an hour at an easy pace. Water clarity is excellent, and on a sunny day the bottom is visible 15-20 feet down in many spots.
The launch is from the day-use area at the end of the basin road. There's a short carry from the parking lot to the water across a sandy beach. No on-site rentals, so bring your own board.
The CO2 venting is real but not actively dangerous to paddlers on the water. The Forest Service posts signs around low-lying ground areas where CO2 can pool; the lake surface itself is unaffected. Use common sense and avoid picnicking in marked low-CO2 zones along the shoreline.
Best for: atmospheric paddles, no-motor calm, photographers. Conditions: Quiet, glassy, otherworldly. Cold water year-round.
4. Lake George
Lake George is the quieter family alternative to Twin Lakes and Lake Mary. It's smaller (about 33 acres), located between Lake Mary and the Crystal Crag trailhead, and has a small Forest Service campground on its southwestern shore. Motor restrictions limit boats to electric only, which keeps the surface calm.
The launch is from the day-use area on the lake's northeastern side, with a short walk down to the water. The campground also has a small put-in for guests. Parking is the bottleneck: the lot is small and fills early on summer weekends.
What sets Lake George apart is the view. Crystal Crag rises directly behind the lake to the south, a 10,377-foot granite peak that looks unreal at sunrise and sunset. Paddling out to the middle of the lake and looking back at the crag is one of the more memorable views in the basin.
The lake is small enough that you can circumnavigate in 30-45 minutes. It's a good place to bring kids new to paddleboarding because the water is shallow near the launch, the shoreline is always close, and there's no motor traffic to track. Trout fishing happens here too, but anglers and paddlers share the water without trouble.
Best for: families, electric-motor-only calm, dramatic backdrop. Conditions: Small lake, motor-restricted, parking fills early.
5. Convict Lake
Convict Lake sits south of Mammoth, off Highway 395 and a few miles from the town of Mammoth Lakes. At 7,621 feet it's slightly lower than the basin lakes, which means marginally warmer water in summer and an earlier season opening (sometimes late May in mild years). It's also the most photogenic lake on this list, with Mt. Morrison and Laurel Mountain rising directly off its southern shore.
Convict Lake Resort runs a marina with paddleboard and kayak rentals, a restaurant, and a small store. Launch access is straightforward: a paved boat ramp, a public dock, and shore-side launching from the day-use beach. The lake is open to motors with a 10 mph limit, and there's a Forest Service campground on the northern end.
A full perimeter paddle covers about 3 miles. The southern shore against Mt. Morrison is the highlight: the granite face sits 4,000 feet above the water and reflects perfectly on calm mornings. Wind tends to come up from the east through the canyon by midday, so AM windows are non-negotiable for the cleanest water.
Convict Lake is a worthwhile day-trip from Mammoth even if you stay in town. Parking is generally easier than the in-basin lakes, the elevation is slightly more forgiving, and the season runs a few weeks longer on each end.
Best for: all skill levels, dramatic mountain photography, full-day destination paddles. Conditions: Slightly lower elevation, longer season, AM wind window critical.
When to go
The Mammoth Lakes paddle season is short and weather-dependent. The basin lakes don't typically open up until late June after snowmelt finishes, and most years they freeze over by late October to early November. July through mid-September is the reliable window across all five lakes on this list.
A few practical notes:
Snowmelt timing varies year to year. A heavy winter can push the basin opening into early July; a light winter can have lakes paddleable by mid-June. Check current conditions through the Inyo National Forest or local resort sites before planning a shoulder-season trip.
Afternoon wind is the constant. Sierra alpine valleys funnel wind through them by early afternoon almost every day in summer. Plan to be on the water by 8 a.m. for the cleanest conditions. By 1 p.m., expect chop on the larger lakes (Twin Lakes lower, Lake Mary, Convict).
Water temperature stays cold. Mid-summer surface temperatures run 50-60°F at most. A 2mm-3mm wetsuit is recommended for shoulder-season paddling and a sensible backup for peak season if you plan to be on the water for hours or are paddling far from shore.
Elevation matters. At 7,800 feet, UV intensity is meaningfully higher than at sea level. Sun protection (SPF 50, hat, UPF rash guard) needs to go up. Hydration too: the combination of altitude, sun, and physical exertion dehydrates faster than you'd expect.
For pre-season prep, the spring paddleboarding checklist covers what to do before your first session of the year.
What to bring
Mammoth is a destination paddle. You're driving in (or flying into Mammoth Yosemite Airport and renting a car), and the gear you bring matters more than at a coastal launch where rentals are easier to find.
Inflation: The NIXY Ventus Electric Pump ($89) handles inflation in under 10 minutes off a 12V car outlet. At altitude, watch for over-pressurization: a board inflated in cool morning air and then left in midday alpine sun can climb above its rated PSI. Let a small amount of air out before leaving the board sitting in full sun.
Manual backup: The G4 Typhoon Pump ($69) is the manual standby worth keeping in the car if the electric pump fails.
Paddle: The G4 Hybrid Carbon Paddle ($89) breaks into three pieces and travels easily between lakes.
Dry bag: Keys, phone, layers. The NIXY 10L Dry Bag ($29) handles a day's essentials.
Cold-water layers: Wetsuit (2-3mm) for shoulder season, rash guard plus a wind layer for peak summer. Neoprene water shoes are useful for rocky shorelines at Horseshoe and Lake George.
Sun protection: SPF 50 minimum, wide-brim hat, polarized sunglasses with a strap. Reapply on the water.
Water: 1-2 liters per person per session minimum. Altitude dehydrates fast.
Choosing the right board for Mammoth
Board selection for a destination trip involves real trade-offs.
For the basin lakes (Twin, Mary, George, Horseshoe), the NIXY Newport G5 ($649) is the default pick. The 10'6" all-around shape handles flat alpine water efficiently, and the backpack-style bag fits in a rental car or roof box for trips between lakes.
For Convict Lake or full-day perimeter paddles where you want more glide, the NIXY Monterey G5 ($699) at 11'6" tracks straighter over distance and carries a dry bag with extra layers.
If you're flying in, the NIXY Huntington G5 Compact ($629) at 9'6" rolls into a smaller packed volume and is easier to manage through airport check-in.
For broader board guidance, the 2026 beginners buyer's guide covers what specs actually matter.
Frequently asked questions
When is the Mammoth Lakes paddleboard season?
The reliable window is July through mid-September. Basin lakes typically open by late June after snowmelt and freeze over by late October to early November. Convict Lake, slightly lower in elevation, can open in late May in mild years and stay open into mid-October. Always check current conditions through the Inyo National Forest before planning a shoulder-season trip.
Do I need a wetsuit at Mammoth Lakes?
A 2-3mm wetsuit is recommended for shoulder-season paddling (June and October) and a sensible backup for peak summer. Surface temperatures across the basin lakes stay in the 50s°F to low 60s°F even in July. Convict Lake runs slightly warmer. Falling in without a wetsuit at 55°F is uncomfortable and can be dangerous on longer paddles far from shore.
Are paddleboard rentals available in Mammoth?
Yes. Tamarack Lodge at Twin Lakes and Pokonobe Resort at Lake Mary both rent paddleboards during summer. Convict Lake Resort has a marina with rentals. Horseshoe Lake and Lake George have no on-site rentals, so bring your own board for those. Rental rates typically run $25-40 per hour or $60-100 for a half-day.
Do I need a permit to paddleboard at Mammoth Lakes?
No paddle-specific permit is required. Most launch sites are on Forest Service land managed by Inyo National Forest. Some launches charge a small day-use parking fee (Pokonobe Resort, Convict Lake day-use). Bring an America the Beautiful pass if you have one; it covers federal recreation fees in many cases.
What is the best Mammoth lake for beginners?
Twin Lakes for ease of access and on-site rentals, or Lake George for the smallest, calmest water with electric-only motor restrictions. Both work well for first-time paddlers. Avoid Lake Mary's bigger surface as a first session if afternoon wind is forecast.
Can inflatable SUPs be left inflated in alpine sun?
Yes, with a caveat. Inflate to your standard PSI (12-15 PSI per the manufacturer) in the morning. If you leave the board fully inflated in direct midday alpine sun for an extended period, air inside expands and pressure can climb above the rated max. The fix: let a small amount of air out before walking away, or move the board to shade. Same physics as a car tire on a hot road.
The shortest version
Mammoth Lakes is a Sierra alpine paddle worth a dedicated trip. Plan around the July to mid-September window, paddle before 10 a.m., bring cold-water layers, and pack sun protection seriously. Twin Lakes is the easiest first session. Convict Lake is the photo. Horseshoe is the surprise. Mammoth rewards paddlers who plan around the conditions.
For nearby Sierra and NorCal options, see the Lake Tahoe guide, the Northern California round-up, and the Sacramento guide for road-trip routing.