Boston Marathon logo
BOSTON MARATHON 2025

Sarah Cormier

Bib: 26675•F

MA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F40-44)
#0 / 1718
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
31:17
Rank: #25746
Start → 5K
10:04/mi
31:17 split
10K· 6.21 mi
1:03:22
Rank: #25905 (-159)
5K → 10K
10:20/mi
32:05 split
15K· 9.32 mi
1:36:59
Rank: #26088 (-183)
10K → 15K
10:49/mi
33:37 split
20K· 12.43 mi
2:13:27
Rank: #26388 (-300)
15K → 20K
11:44/mi
36:28 split
Half· 13.11 mi
2:21:26
Rank: #26455 (-67)
20K → Half
11:42/mi
7:59 split
25K· 15.53 mi
2:54:07
Rank: #26785 (-330)
Half → 25K
13:29/mi
32:41 split
30K· 18.64 mi
3:35:13
Rank: #26843 (-58)
25K → 30K
13:14/mi
41:06 split
20M
3:53:55
Rank: #26897 (-54)
30K → 20M
13:46/mi
18:42 split
21M
4:09:06
Rank: #26940 (-43)
20M → 21M
15:11/mi
15:11 split
35K· 21.75 mi
4:18:09
Rank: #26919 (+21)
21M → 35K
12:06/mi
9:03 split
23M
4:34:20
Rank: #26901 (+18)
35K → 23M
12:56/mi
16:11 split
24M
4:47:16
Rank: #26886 (+15)
23M → 24M
12:56/mi
12:56 split
40K· 24.85 mi
4:58:20
Rank: #26870 (+16)
24M → 40K
12:56/mi
11:04 split
25.2M
5:02:57
Rank: #26854 (+16)
40K → 25.2M
13:23/mi
4:37 split
Finish· 26.22 mi
5:15:05
Rank: #26849 (+5)
25.2M → Finish
11:54/mi
12:08 split

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:21:26
Pace10:47 /mi
2nd Half
Distance13.11 mi
Time2:53:39
Pace13:15 /mi
📊Positive Split: 22.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:54:0231:1710:0431:17
10:04
-
10K
6.21 mi12:26:071:03:2210:1232:05
10:20
+0:16
15K
9.32 mi12:59:441:36:5910:2433:37
10:49
+0:29
20K
12.43 mi13:36:122:13:2710:4436:28
11:44
+0:55
Half
13.11 mi13:44:112:21:2610:477:59
11:42
-0:02
25K
15.53 mi14:16:522:54:0711:1332:41
13:29
+1:47
30K
18.64 mi14:57:583:35:1311:3341:06
13:14
-0:15
20M
20.00 mi15:16:403:53:5511:4218:42
13:46
+0:32
21M
21.00 mi15:31:514:09:0611:5215:11
15:11
+1:25
35K
21.75 mi15:40:544:18:0911:529:03
12:06
-3:05
23M
23.00 mi15:57:054:34:2011:5616:11
12:56
+0:50
24M
24.00 mi16:10:014:47:1611:5812:56
12:56
0:00
40K
24.85 mi16:21:054:58:2012:0011:04
12:56
0:00
25.2M
25.20 mi16:25:425:02:5712:014:37
13:23
+0:27
Finish
26.22 mi16:37:505:15:0512:0212:08
11:54
-1:29

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

10:04 /mi

Average Pace

12:02 /mi

Slowest Pace

15:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:42:37

52% of race

Time at Steady Pace

1:58:35

38% of race

Time at Slower Pace

33:53

11% of race

Average Pace: 12:01 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:54:0231:1710:0431:17
10:04
#25746
10K
6.21 mi12:26:071:03:2210:1232:05
10:20
#25905
15K
9.32 mi12:59:441:36:5910:2433:37
10:49
#26088
20K
12.43 mi13:36:122:13:2710:4436:28
11:44
#26388
Half
13.11 mi13:44:112:21:2610:477:59
11:42
#26455
25K
15.53 mi14:16:522:54:0711:1332:41
13:29
#26785
30K
18.64 mi14:57:583:35:1311:3341:06
13:14
#26843
20M
20.00 mi15:16:403:53:5511:4218:42
13:46
#26897
21M
21.00 mi15:31:514:09:0611:5215:11
15:11
#26940
35K
21.75 mi15:40:544:18:0911:529:03
12:06
#26919
23M
23.00 mi15:57:054:34:2011:5616:11
12:56
#26901
24M
24.00 mi16:10:014:47:1611:5812:56
12:56
#26886
40K
24.85 mi16:21:054:58:2012:0011:04
12:56
#26870
25.2M
25.20 mi16:25:425:02:5712:014:37
13:23
#26854
Finish
26.22 mi16:37:505:15:0512:0212:08
11:54
#26849
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi25746106161061626436(Top 93%)11026(Top 90%)11026(Top 642%)
10K6.21 mi3.10 mi25905-15910718-10210718-10225964(Top 91%)10772(Top 88%)10772(Top 627%)
15K9.32 mi3.11 mi26088-18310830-11210830-11226436(Top 93%)11026(Top 90%)11026(Top 642%)
20K12.43 mi3.11 mi26388-30011002-17211002-17226885(Top 95%)11323(Top 93%)11323(Top 659%)
Half13.11 mi0.68 mi26455-6711040-3811040-3827223(Top 96%)11542(Top 94%)11542(Top 672%)
25K15.53 mi2.42 mi26785-33011252-21211252-21227600(Top 97%)11774(Top 96%)11774(Top 685%)
30K18.64 mi3.11 mi26843-5811308-5611308-5626900(Top 95%)11432(Top 93%)11432(Top 665%)
20M20.00 mi1.36 mi26897-5411347-3911347-3927115(Top 95%)11623(Top 95%)11623(Top 677%)
21M21.00 mi1.00 mi26940-4311376-2911376-2927293(Top 96%)11728(Top 96%)11728(Top 683%)
35K21.75 mi0.75 mi26919+2111363+1311363+1325990(Top 92%)11098(Top 91%)11098(Top 646%)
23M23.00 mi1.25 mi26901+1811360+311360+326284(Top 93%)11243(Top 92%)11243(Top 654%)
24M24.00 mi1.00 mi26886+1511371-1111371-1126793(Top 94%)11529(Top 94%)11529(Top 671%)
40K24.85 mi0.85 mi26870+1611369+211369+226222(Top 92%)11252(Top 92%)11252(Top 655%)
25.2M25.20 mi0.35 mi26854+1611363+611363+625511(Top 90%)10958(Top 90%)10958(Top 638%)
Finish26.22 mi1.02 mi26849+511367-411367-426683(Top 94%)11466(Top 94%)11466(Top 667%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 93%
×21stories
+97ft-345ft

Overall

26436

Females

11026

F40-44

11026

5K→10K

3.1 - 6.2 mi

Top 91%
×5stories
+79ft-138ft

Overall

25964

Females

10772

F40-44

10772

10K→15K

6.2 - 9.3 mi

Top 93%
×3stories
+67ft-78ft

Overall

26436

Females

11026

F40-44

11026

15K→20K

9.3 - 12.4 mi

Top 95%
×5stories
+106ft-86ft

Overall

26885

Females

11323

F40-44

11323

20K→Half

12.4 - 13.1 mi

Top 96%
×2stories
+19ft-37ft

Overall

27223

Females

11542

F40-44

11542

Half→25K

13.1 - 15.5 mi

Top 97%
×4stories
+66ft-88ft

Overall

27600

Females

11774

F40-44

11774

25K→30K

15.5 - 18.6 mi

Top 95%
×9stories
+181ft-148ft

Overall

26900

Females

11432

F40-44

11432

30K→20M

18.6 - 20.0 mi

Top 95%
×5stories
+64ft-50ft

Overall

27115

Females

11623

F40-44

11623

20M→21M

20.0 - 21.0 mi

Top 96%
×8stories
+106ft-24ft

Overall

27293

Females

11728

F40-44

11728

21M→35K

21.0 - 21.8 mi

Top 92%
×7stories
+17ft-86ft

Overall

25990

Females

11098

F40-44

11098

35K→23M

21.8 - 23.0 mi

Top 93%
×5stories
+23ft-63ft

Overall

26284

Females

11243

F40-44

11243

23M→24M

23.0 - 24.0 mi

Top 94%
×6stories
+12ft-82ft

Overall

26793

Females

11529

F40-44

11529

24M→40K

24.0 - 24.9 mi

Top 92%
×1story
+6ft-20ft

Overall

26222

Females

11252

F40-44

11252

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

25511

Females

10958

F40-44

10958

25.2M→Finish

25.2 - 26.2 mi

Top 94%
×2stories
+22ft-21ft

Overall

26683

Females

11466

F40-44

11466

Passing Analysis

Category:
Athletes Passed
551
Passed By
1654
Net Change
-1103
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25746
5K → 10K134293-159#25746#25905
10K → 15K71254-183#25905#26088
15K → 20K41341-300#26088#26388
20K → Half774-67#26388#26455
Half → 25K16346-330#26455#26785
25K → 30K70128-58#26785#26843
30K → 20M2377-54#26843#26897
20M → 21M1255-43#26897#26940
21M → 35K298+21#26940#26919
35K → 23M4224+18#26919#26901
23M → 24M3722+15#26901#26886
24M → 40K2913+16#26886#26870
40K → 25.2M182+16#26870#26854
25.2M → Finish2217+5#26854#26849
TOTALS5511654-1103
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing