# List of tallest mountains in the Solar System

This is a list of the tallest mountains in the Solar System. This list includes peaks on all celestial bodies where significant mountains have been detected. For some celestial bodies, different peaks are given across different types of measurement. The solar system's tallest mountain is possibly the Olympus Mons on Mars with an altitude of 21.9 to 26 km. The central peak of Rheasilvia on the asteroid Vesta is also a candidate to be the tallest, with an estimated at up to between 20 and 25 km from peak to base.

## List

Heights are given from base to peak (although a precise definition for mean base level is lacking). Peak elevations above sea level are only available on Earth, and possibly Titan. On other planets, peak elevations above an equipotential surface or a reference ellipsoid could be used if enough data is available for the calculation, but this is often not the case.
| Planet | Tallest peak(s) | Base-to-peak height | % of radius | Origin | Notes |
| Mercury | Caloris Montes | ≤ 3 km (1.9 mi) | 0.12 | impact | Formed by the Caloris impact |
| Venus | Skadi Mons (Maxwell Montes massif) | 6.4 km (4.0 mi) (11 km above mean) | 0.11 | tectonic | Has radar-bright slopes due to metallic Venus snow, possibly lead sulfide |
| Venus | Maat Mons | 4.9 km (3.0 mi) (approx.) | 0.081 | volcanic | Highest volcano on Venus |
| Earth | Mauna Kea and Mauna Loa | 10.2 km (6.3 mi) | 0.16 | volcanic | 4.2 km (2.6 mi) of this is above sea level |
| Earth | Haleakalā | 9.1 km (5.7 mi) | 0.14 | volcanic | Rises 3.1 km above sea level |
| Earth | Pico del Teide | 7.5 km (4.7 mi) | 0.12 | volcanic | Rises 3.7 km above sea level |
| Earth | Denali (Mount McKinley) | 5.3 to 5.9 km (3.3 to 3.7 mi) | 0.093 | tectonic | Tallest mountain base-to-peak on land |
| Earth | Mount Everest | 3.6 to 4.6 km (2.2 to 2.9 mi) | 0.072 | tectonic | 4.6 km on north face, 3.6 km on south face; highest elevation (8.8 km) above sea level, as well as by wet and dry prominence (but not among the tallest from base to peak, and in distance to Earth's center Mt Chimborazo rises highest). |
| Moon | Mons Huygens | 5.3 km (3.3 mi) | 0.31 | impact | Formed by the Imbrium impact. |
| Moon | Mons Mouton | 6 km (3.7 mi) | 0.35 | impact | Possibly formed by the South Pole-Aitken basin impact. |
| Moon | Southern Farside Mountain | 7 km (4.3 mi) | 0.40 | impact | Informal name of the Moon's tallest free-standing mountain. Possibly formed by the South Pole-Aitken basin impact. Not highest lunar peak by prominence, which would be Selenean summit. |
| Moon | Mons Hadley | 4.5 km (2.8 mi) | 0.26 | impact | Formed by the Imbrium impact |
| Moon | Mons Rümker | 1.3 km (0.81 mi) | 0.063 | volcanic | Largest volcanic construct on the Moon |
| Mars | Olympus Mons | 21.9–26 km (13.6–16.2 mi; 72,000–85,000 ft) | 0.65 | volcanic | Tallest mountain in the Solar System. Rises 26 km above northern plains, (dry prominence) 1000 km away. Summit calderas are 60 x 80 km wide, up to 3.2 km deep; scarp around margin is up to 8 km high. A shield volcano, the mean flank slope is a modest 5.2 degrees. |
| Mars | Ascraeus Mons | 14.9 km (9.3 mi) | 0.44 | volcanic | Tallest of the three Tharsis Montes |
| Mars | Elysium Mons | 12.6 km (7.8 mi) | 0.37 | volcanic | Highest volcano in Elysium |
| Mars | Arsia Mons | 11.7 km (7.3 mi) | 0.35 | volcanic | Summit caldera is 108 to 138 km (67 to 86 mi) across |
| Mars | Pavonis Mons | 8.4 km (5.2 mi) | 0.25 | volcanic | Summit caldera is 4.8 km (3.0 mi) deep |
| Mars | Anseris Mons | 6.2 km (3.9 mi) | 0.18 | impact | Among the highest nonvolcanic peaks on Mars, formed by the Hellas impact |
| Mars | Aeolis Mons ("Mount Sharp") | 4.5 to 5.5 km (2.8 to 3.4 mi) | 0.16 | deposition and erosion | Formed from deposits in Gale crater; the MSL rover has been ascending it since November 2014. |
| Vesta | Rheasilvia central peak | 20–25 km (12–16 mi; 66,000–82,000 ft) | 8.4 | impact | Almost 200 km (120 mi) wide. See also: List of largest craters in the Solar System |
| Ceres | Ahuna Mons | 4 km (2.5 mi) | 0.85 | cryovolcanic | Isolated steep-sided dome in relatively smooth area; max. height of ~ 5 km on steepest side; roughly antipodal to largest impact basin on Ceres |
| Io | Boösaule Montes "South" | 17.5 to 18.2 km (10.9 to 11.3 mi) | 1.0 | tectonic | Has a 15 km (9 mi) high scarp on its SE margin |
| Io | Ionian Mons east ridge | 12.7 km (7.9 mi) (approx.) | 0.70 | tectonic | Has the form of a curved double ridge |
| Io | Euboea Montes | 10.5 to 13.4 km (6.5 to 8.3 mi) | 0.74 | tectonic | A NW flank landslide left a 25,000 km$^3$ debris apron |
| Io | unnamed (245° W, 30° S) | 2.5 km (1.6 mi) (approx.) | 0.14 | volcanic | One of the tallest of Io's many volcanoes, with an atypical conical form |
| Mimas | Herschel central peak | 7 km (4 mi) (approx.) | 3.5 | impact | See also: List of largest craters in the Solar System |
| Dione | Janiculum Dorsa | 1.5 km (0.9 mi) | 0.27 | tectonic | Surrounding crust depressed ca. 0.3 km. |
| Titan | Mithrim Montes | ≤ 3.3 km (2.1 mi) | 0.13 | tectonic | May have formed due to global contraction |
| Titan | Doom Mons | 1.45 km (0.90 mi) | 0.056 | cryovolcanic | Adjacent to Sotra Patera, a 1.7 km (1.1 mi) deep collapse feature |
| Iapetus | equatorial ridge | 20 km (12 mi) (approx.) | 2.7 | uncertain | Individual peaks have not been measured |
| Oberon | unnamed ("limb mountain") | 11 km (7 mi) (approx.) | 1.4 | impact (?) | A value of 6 km was given shortly after the Voyager 2 encounter |
| Pluto | Tenzing Montes, peak "T2" | ~6.2 km (3.9 mi) | 0.52 | tectonic (?) | Composed of water ice; named after Tenzing Norgay |
| Pluto | Piccard Mons | ~5.5 km (3.4 mi) | 0.46 | cryovolcanic (?) | ~220 km across; central depression is 11 km deep |
| Pluto | Wright Mons | ~4.7 km (2.9 mi) | 0.40 | cryovolcanic (?) | ~160 km across; summit depression ~56 km across and 4.5 km deep |
| Charon | Butler Mons | ≥ 4.5 km (2.8 mi) | 0.74 | tectonic (?) | Vulcan Planitia, the southern plains, has several isolated peaks, possibly tilted crustal blocks |
| Charon | Dorothy central peak | ~4.0 km (2.5 mi) | 0.66 | impact | North polar impact basin Dorothy, Charon's largest, is ~240 km across and 6 km deep |
| 2002 MS4 | unnamed | 20–29 km (12–18 mi) | 6.3 | ? | Discovered by stellar occultation; it is unclear whether this feature may be a genuine topographic peak or a transiting/occulting satellite. |

### Tallest mountains by elevation

* Olympus Mons 72,000 ft (22,000 m)
* Equatorial Ridge 65,617 ft (20,000 m)
* Boösaule Mons 59,711 ft (18,200 m)
* Ascraeus Mons 49,000 ft (15,000 m)
* Ionian Mons 41,667 ft (12,700 m)
* Elysium Mons 41,338 ft (12,600 m)
* Arsia Mons 38,386 ft (11,700 m)
* Limb Mountain 36,089 ft (11,000 m)
* Skadi Mons 35,105 ft (10,700 m)
* Euboea Montes 34,449 ft (10,500 m)
* Mount Everest 29,029 ft (8,848 m)
* Herschel Peak 22,966 ft (7,000 m)
* Anseris Mons 20,341 ft (6,200 m)
* Tenzing Montes 20,341 ft (6,200 m)
* Denali 20,310 ft (6,190 m)
* Mount Kilimanjaro 19,341 ft (5,895 m)
* Mons Huygens 18,045 ft (5,500 m)
* Aeolis Mons 18,045 ft (5,500 m)
* Piccard Mons 18,045 ft (5,500 m)
* Maat Mons 16,076 ft (4,900 m)
* Wright Mons 15,420 ft (4,700 m)
* Mons Hadley 14,764 ft (4,500 m)
* Butler Mons 14,764 ft (4,500 m)
* Mauna Kea 13,803 ft (4,207 m)
* Ahuna Mons 13,500 ft (4,100 m)
* Dorothy Peak 13,123 ft (4,000 m)
* Mithrim Montes 10,948 ft (3,337 m)
* Haleakala 10,023 ft (3,055 m)
* Caloris Montes 9,843 ft (3,000 m)
* Io (unnamed peak) 8,202 ft (2,500 m)
* Janiculum Dorsa 4,921 ft (1,500 m)
* Doom Mons 4,757 ft (1,450 m)
* Mons Rümker 4,265 ft (1,300 m)

## Gallery

The following images are shown in order of decreasing base-to-peak height.
* Olympus Mons on Mars as viewed from Viking 1 in 1978
* Cassini image of Iapetus's equatorial ridge
* Voyager 1 photo of Io's highest peak, Boösaule Montes "South"
* Ascraeus Mons (THEMIS IR with MOLA altimetry, 3x vertical stretch), Mars
* Io's Euboea Montes (below top left), Haemus Montes (lower right); north is left
* Mauna Kea (from Mauna Loa), Hawaii
* Teide, Canary Islands
* Cassini photo of Herschel crater on Mimas and its central peak
* Magellan SAR image of Skadi Mons in Venus's Maxwell Montes
* Denali (Mount McKinley), Alaska
* Aeolis Mons ("Mount Sharp"), Mars (as viewed by the rover Curiosity on 6 August 2012).
* Maat Mons, Venus (radar imaging plus altimetry, 10x vertical exaggeration)
* The Moon's Mons Hadley, near the Apollo 15 landing site (1971)
* Mount Everest (Sagarmāthā/ Chomolungma), Nepal/Tibet
* Ahuna Mons on Ceres, imaged by Dawn from LAMO
* Pluto's possible cryovolcano Wright Mons, showing its central depression
* New Horizons view of Pluto's Tenzing Montes in the left foreground (also in preceding image) and Hillary Montes on the horizon
* Cassini SAR image of Titan's Mithrim Montes, showing three parallel ridges
* Radar-generated view of Titan's cryovolcanic Doom Mons and Sotra Patera (10x vertical stretch)