Tom Dumoulin of the Team Giant–Alpecin squad rounded up the podium, having won the two individual time trial stages that bookended the race.

The mountains classification was initially awarded to Austria's Stefan Denifl (IAM Cycling), who featured in many breakaways to amass his points.

Other riders who won a stage were Croatian Kristijan Đurasek of Lampre–Merida, Australian Michael Matthews (Orica–GreenEDGE), Norwegian Alexander Kristoff (Team Katusha) and Kazakh Alexey Lutsenko of Astana.

[8] There were two former winners of the Tour de Suisse at the starting line, Trek Factory Racing teammates: Swiss Fabian Cancellara and Luxembourger Fränk Schleck.

[12] It was AG2R La Mondiale's Domenico Pozzovivo's first race after his disastrous crash in the Giro d'Italia, so his form was predicted as uncertain, but the Italian climber could certainly be a factor if he was in shape.

Time trialist Adriano Malori[22] (Movistar Team) started soon after Cancellara crossed the finish line, but came in at 5' 47", four seconds slower.

[24][25][26] After the event, Dumoulin said that he prepared at altitude for the race and that he produced a hard physical effort on the uphill section and went less intensely on the flatter parts.

[27] After 38 kilometres (23.6 miles) of racing, Luka Pibernik (Lampre–Merida), Cameron Meyer (Orica–GreenEDGE), Jürgen Roelandts (Lotto–Soudal) and Valerio Agnoli of Astana had an advantage of 1' 08" over chasers Ben King (Cannondale–Garmin) and Simone Antonini of Pro Continental team Wanty–Groupe Gobert.

[29][30] 15 June 2015 — Quinto to Olivone, 117.3 km (72.9 mi)[b] This was the new version of the stage as the original route was closed due to a landslide.

Rafał Majka (Tinkoff–Saxo) was working at the front of the small leading group to bring back the attackers to give his team leader Peter Sagan a chance at victory.

Sprint specialists Arnaud Démare (FDJ), Mark Cavendish (Etixx–Quick-Step) and Alexander Kristoff (Team Katusha) struggled with the high pace at the front set by Orica–GreenEDGE.

[12] The first difficulty of the day was the 34.4-kilometre (21.4-mile) hors catégorie Bielerhöhe Pass which summited at 2,071 metres (6,794.6 feet) of altitude and at that point, the riders were already in Austria after a brief visit to Liechtenstein.

Following that difficulty, the run-in to Sölden offered a respite until the cyclists reached the town and tackled the stage's second hors catégorie climb to the Rettenbach glacier, which took them to an altitude of 2,669 metres (8,756.6 feet).

[44] With 90 kilometres (55.9 miles) to go the gap was miscalculated by the race organisers as there were unrealistic fluctuations in the official timing throughout the long stretch of flat road before the final climb.

"[44] 18 June 2015 — Wil to Biel/Bienne, 193.1 km (120.0 mi) This stage contained only one categorised ascent midway through it and was a Category 3 affair named Auensteinstrasse.

The day's breakers were Axel Domont (AG2R La Mondiale), Marek Rutkiewicz (CCC–Sprandi–Polkowice), Matej Mohorič (Cannondale–Garmin) and Jérôme Baugnies (Wanty–Groupe Gobert).

[48] The breakers took the points on offer on the only climb of the day, Auensteinstrasse, so Stefan Denifl of IAM Cycling maintained his 30-point advantage over his nearest competitor Thomas De Gendt (Lotto–Soudal).

[48] About midway through, it was calculated that the peloton's average speed was slower than the slowest prediction by the organisers, most likely due to the severity of the previous stage.

[52] At the 10 kilometres (6.2 miles) remaining arch, the break of four still held a lead of forty seconds with the two Movistar Team riders placed between the groups.

At that point, two Etixx–Quick-Step riders (Julien Vermote and Zdeněk Štybar) crashed on the water-logged tarmac before a bend, but the mishap had no consequences on the peloton.

It was Sagan's eleventh victory at the Tour de Suisse, matching the record of Hugo Koblet and Ferdinand Kübler.

Due to a split in the peloton, Pinot lost five seconds to general classification rival Geraint Thomas of Team Sky.

He was joined by Silvan Dillier (BMC Racing Team), Daryl Impey (Orica–GreenEDGE) and Axel Domont (AG2R La Mondiale).

[60] "It was a hard day, I haven't felt super in this Tour de Suisse but I did a good sprint today", said the winner.

As the peloton passed through the finish line to undertake the last lap of the circuit, Jakob Fuglsang of Astana abandoned the race due to stomach problems.

[64] With 20 kilometres (12.4 miles) remaining, Astana's Alexey Lutsenko attacked the escapees, followed by Jan Bakelants (AG2R La Mondiale); they opened a gap, holding off their former breakaway companions.

[68] The final general classification of the race was decided on this stage, and a majority of the observers believed that Pinot would lose his lead since he is not a great time trialist.

Tom Dumoulin (Team Giant–Alpecin) won the short prologue and was a contender for overall victory as a time trial specialist, but he had 1' 24" to make up.

[70][71] As far as the stage win was concerned, solo effort specialists Fabian Cancellara (Trek Factory Racing) and Adriano Malori (Movistar Team) were to be considered, but they had no chance of a victory in the general classification since they were too far down in the rankings.

For the general classification, calculated by adding each cyclist's finishing times on each stage, and the leader received a yellow jersey.