Rollercoaster Over the Chalk Cliffs: Hiking Seaford to Eastbourne via Seven Sisters

By Subhash Muthukumar • 📅 August 28, 2026 • ⏱️ 6 min read

If you ask any hiker in the UK for their top day hike, the 21km trek from Seaford to Eastbourne across the Seven Sisters chalk cliffs will almost certainly be in the top three. It’s an epic natural rollercoaster where the English Channel meets towering white precipices, and I finally set aside a clear summer Sunday to hike the entire route from station to station. I boarded the direct Southern service from London Victoria down to Lewes and switched to the Seaford branch line. Stepping off the platform, the salty sea breeze hits your face instantly. Walking along the pebble beach of Seaford, you start by climbing past the Martello Tower onto the headland. As you crest the first hill, one of the most photographed views in Britain opens up: the winding loops of Cuckmere Haven leading towards the iconic Coastguard Cottages, backed by the sheer white face of Haven Brow. The Seven Sisters are a series of chalk cliffs that undulate like waves frozen in time: Haven Brow, Short Brow, Rough Brow, Brass Point, Flagstaff Point, Flat Hill, and Went Hill. Each sister requires a steep climb to the top followed by a steep descent into a dry valley (brow). Your legs feel the burn, then you catch your breath as you glide downhill, only to gear up for the next climb. The contrast between the emerald-green grass, blinding white chalk, and turquoise sea under a summer sun is breathtaking. At roughly the halfway mark, you descend into Birling Gap. This natural dip in the cliffs offers steps down to the pebble beach and a National Trust cafe. I grabbed an oat flat white and a flapjack, sat on the seawall watching seabirds dive into the waves, and soaked up the coastal atmosphere. The second half of the hike is just as dramatic. You climb past the Belle Tout Lighthouse—famously moved back 17 meters from the crumbling cliff edge in 1999—and continue up towards Beachy Head, the highest chalk sea cliff in Britain at 162 meters. Peering carefully over the edge, the red-and-white striped Beachy Head Lighthouse looks like a miniature toy bobbing in the Atlantic swell far below. The final stretch descends gently off the South Downs down into Eastbourne’s Victorian seafront, ending with tired legs, salt-crusted cheeks, and a massive plate of traditional fish and chips on the pier before catching the train back to London. It’s a full 6-hour endurance test, but undeniably one of the greatest walks on earth.