After a two-year break, IM Boulder is again contested with a Pro field. The race seems to be a popular choice for a lot of local (or at least US-based) athletes as a validation race (Heather Jackson or Tim O’Donnell) or backup race (Tim Don who is on the start list for IM Brasil two weeks before). But it is also a popular choice as an “A Race”, for example Rachel Joyce has chose Boulder as her comeback race on the full distance.
Male Race Participants
| Name | Nation | KPR points | KPR races |
| Timothy O’Donnell | USA | 5525 | 1+2 (4725/400) |
| Tyler Butterfield | BMU | 4040 | 1+2 (2890/435) |
| Tim Don | GBR | 2515 | 0+2 (0/920) |
| Chris Leiferman | USA | 2420 | 1+2 (1280/500) |
| Leon Griffin | AUS | 2025 | 1+2 (1335/345) |
| Patrick Evoe | USA | 1828 | 2+1 |
| Justin Daerr | USA | 825 | 1+2 (720/30) |
| Jozsef Major | HUN | 810 | 2+0 |
| Matt Chrabot | USA | 665 | 0+2 (0/25) |
| Mike Schifferle | SUI | 525 | 2+0 |
| Kennett Peterson | USA | 255 | 0+2 (0/115) |
| Colin Laughery | USA | 248 | 3+0 (3/0) |
| Sam Long | USA | 165 | 1+2 (30/35) |
| Tripp Hipple | USA | 160 | 1+2 (60/45) |
| Jarrod Shoemaker | USA | 134 | 2+2 (5/1) |
| Patrick Mckeon | USA | 65 | 0+2 (0/15) |
| Christopher Bagg | USA | 35 | 0+1 |
| Steven Zawaski | USA | 20 | 0+2 (0/10) |
| Max Biessmann | USA | 4 | 0+2 (0/1) |
| Robert Wade | IRL | 1 | 0+1 |
Female Race Participants
| Name | Nation | KPR points | KPR races |
| Heather Jackson | USA | 7415 | 1+2 (6480/435) |
| Darbi Roberts | USA | 2755 | 3+0 (215/0) |
| Danielle Mack | USA | 2170 | 2+0 |
| Kelly Williamson | USA | 1980 | 2+2 (305/100) |
| Rachel Joyce | GBR | 1140 | 0+2 (0/220) |
| Jessica Jones Meyers | USA | 455 | 0+2 (0/135) |
| Mackenzie Madison | USA | 200 | 2+0 |
| Uli Bromme | USA | 195 | 0+1 |
| Maggie Rusch | USA | 65 | 0+2 (0/30) |
| Amy Vantassel | USA | 30 | 0+1 |
| Sarah Bay | USA | 8 | 1+1 |
| Kate Bruck | USA | ||
| Carla Schubiger | SUI |