Grand Prismatic Spring Hike – Yellowstone Trail Guide

Want to see Yellowstone National Park’s most photographed thermal feature from an overlook that offers spectacular aerial views?

Skip (some of) the crowds on the Midway Geyser Basin boardwalks and take a hike up to the overlook point to get a different perspective of the colourful Grand Prismatic Spring.  

This article provides everything you need to know about the Grand Prismatic Spring hike.

Grand Prismatic Spring Quick Facts

  • Overlook offers stunning aerial views of Grand Prismatic Spring
  • Short hike 5.5km return, long hike 11.5km return
  • Busy and popular route
  • Best in late Spring, Summer and early Fall
  • No permit required
  • Trails closed during winter months
  • Bear management area

Grand Prismatic Spring Hike

The Grand Prismatic Spring trail is an easy hike up to an overlook that offers astounding aerial views of the largest hot spring in the United States (third largest in the world).

A newly constructed trail has replaced the numerous ‘social’ trails that picked their way over fallen trees up the rocky hill, and now offers hikers a safe and gradual climb up ‘Picture Hill’ to a constructed overlook. 

The overlook offers a great photographic opportunity to get a postcard shot of the iconic spring, identifiable by its vivid rainbow colours that are a result of the microbial mats that live around the edge of it.

Other Midway Geyser basin thermal features such as Excelsior Geyser, Turquoise Pool, Opal Pool and a large geyser crater can also be seen from here. 

The distance of this hike can be tailored according to how energetic you feel.  For a shorter trail of 5.5km return, park 1.5km south of the Midway Geyser Basin

Begin your hike by crossing over the Firehole River using the old bridge and then follow the wide, flat, dirt road to the Fairy Falls trailhead.

This section of the trail is open to both cyclists and hikers, but cyclists will need to leave their bike at the trailhead before going any further.  From here follow the trail to the left and a gradual incline through new lodgepole forest growth will get you to the overlook.

If you are feeling up for an 11.5km return hike, then park at the end of the Fountain Flat drive and take Freight Road to the Fairy Falls trailhead. Freight Road is a flat dirt road that passes through a scenic valley where bison are found year round.

It will also take you past Ojo Caliente Spring, past one of the backcountry campsites as well as Goose Lake, and then along the Firehole River for a bit before you get to the Fairy Falls trailhead.

Once at the trailhead make your way up the hill to the overlook. This longer route is an easy 11.5km return.

Grand Prismatic Spring Trail Map

The Grand Prismatic Spring Trail is found in the Old Faithful area of Yellowstone National Park.  To get there from Old Faithful travel north along the Grand Loop Road to the Fairy Falls parking lot just south of the Midway Geyser Basin.

To access the long route start point on Freight Road take Grand Loop Road south from Madison for 9.3km until you reach Fountain Flat Drive. Turn right into Fountain Flat Drive and continue to the Freight Road trailhead. 

Lonely Planet Yellowstone & Grand Teton National Parks (Travel Guide)

This trail is fairly straightforward. Maps and route guides are available from the Visitor Centres and look out for the Fairy Falls trailhead routes to get you safely to the Grand Prismatic Spring overlook.

For an overview of Yellowstone National Park, Yellowstone and Grand Teton National Parks by Lonely Planet provides excellent advice on every aspect of the Park from accommodation, hiking, maps, when to go, where to stay, and is highly recommended.

Beware of bears

This trail runs through a bear management area. Be on the lookout for bears and keep a safe distance should you see any. Make sure you know the safety rules for hiking through bear country in Yellowstone National Park.

Grand Prismatic Hike Itinerary

Grand Prismatic Spring Hike 2

The short route should take you 1 – 2 hours, whilst the long route will take about 3 hours to hike.

It is an exposed trail so make sure you are protected from the elements – try to avoid the midday heat, take sun cream and wear protective clothing.

Short Route from south of the Midway Gazer Basin

Parking area to the Fairy Falls trailhead.

Trailhead to the overlook


Long Route from Freight Road

Parking area to Fairy Falls trailhead

Trailhead to the overlook


Video Overview

In this short video by Billings Gazette a Park Ranger gives a bit of information as to why a new trail and overlook was constructed, and you also get a glimpse of some of the amazing views from the overlook.

 Grand Prismatic Spring Hike FAQ

When is the Best Time to Hike the Grand Prismatic Spring Trail?

This trail is best in summer-time when visibility over the basin is good.  In cooler weather, more steam is produced and this can reduce visibility around the Spring.  The trail is closed during winter into early spring.

How Difficult is the Grand Prismatic Spring Trek?

This is an easy and flat trail with a gradual incline up to the overlook.  A good overall level of fitness is always recommended.

What gear do I need?

Hiking above the Grand Prismatic Spring requires few pieces of essential gear. Make sure you have a good pair of hiking shoes and take your day pack with all the essentials you might need to protect you from the elements. Do not forget your camera!

What weather should I avoid when hiking Grand Prismatic Spring Trail?

Avoid hiking at midday during the hot summer months as the trail is fairly open and unprotected from the sun. It's a good idea to check the weather before going on this hike.

Where can I get water along the way?

Make sure you take enough drinking water with you on the trail.

What wildlife could I potentially see on the Grand Prismatic Spring hike?

This trail is in a bear management area so be on the lookout for bears.  If you take the Freight Road route you will possibly see bison. Otherwise, birds are a common site in the national park.

What sights will I see on Grand Prismatic Spring Trail?

You will see the Grand Prismatic Spring, Turquoise Pool, Excelsior Geyser and Opal Pool.  If you take the long route you will also see Ojo Caliente Spring and Goose Lake.

What insurance do I need for the Grand Prismatic Spring?

Hiking insurance is usually recommended for Yellowstone. If an accident or incident should occur that requires immediate medical assistance and evacuation you will most definitely want adequate hiking insurance that can cover the costs of air ambulance and treatment.

Check out World Nomads for a quick calculation of the cost of travel insurance for your trip.

We work with local guides to offer great value adventures at unbeatable prices