Boston Marathon logo
BOSTON MARATHON 2025

Laura Sanhueza-Miller

Bib: 20814•F

ON

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
24:17
Rank: #14981
Start → 5K
24:17 | 7:49/mi
10K· 6.21 mi
49:11
Rank: #15841 (-860)
5K → 10K
24:54 | 8:01/mi
15K· 9.32 mi
1:15:39
Rank: #17205 (-1364)
10K → 15K
26:28 | 8:31/mi
20K· 12.43 mi
1:41:42
Rank: #17245 (-40)
15K → 20K
26:03 | 8:23/mi
Half· 13.11 mi
1:47:26
Rank: #17300 (-55)
20K → Half
5:44 | 8:24/mi
25K· 15.53 mi
2:08:39
Rank: #17493 (-193)
Half → 25K
21:13 | 8:45/mi
30K· 18.64 mi
2:38:19
Rank: #18066 (-573)
25K → 30K
29:40 | 9:33/mi
20M
2:51:36
Rank: #18307 (-241)
30K → 20M
13:17 | 9:46/mi
21M
3:02:01
Rank: #18408 (-101)
20M → 21M
10:25 | 10:25/mi
35K· 21.75 mi
3:12:38
Rank: #19409 (-1001)
21M → 35K
10:37 | 14:11/mi
23M
3:24:19
Rank: #19327 (+82)
35K → 23M
11:41 | 9:20/mi
24M
3:35:52
Rank: #19767 (-440)
23M → 24M
11:33 | 11:33/mi
40K· 24.85 mi
3:46:28
Rank: #20234 (-467)
24M → 40K
10:36 | 12:24/mi
25.2M
3:49:56
Rank: #20181 (+53)
40K → 25.2M
3:28 | 10:03/mi
Finish· 26.22 mi
3:58:48
Rank: #20127 (+54)
25.2M → Finish
8:52 | 8:42/mi

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
Time1:47:26
Pace8:12 /mi
2nd Half
Distance13.11 mi
Time2:11:22
Pace10:01 /mi
📊Positive Split: 22.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:5624:177:4924:17
7:49
-
10K
6.21 mi11:41:5049:117:5524:54
8:01
+0:12
15K
9.32 mi12:08:181:15:398:0726:28
8:31
+0:30
20K
12.43 mi12:34:211:41:428:1126:03
8:23
-0:08
Half
13.11 mi12:40:051:47:268:125:44
8:24
+0:01
25K
15.53 mi13:01:182:08:398:1721:13
8:45
+0:21
30K
18.64 mi13:30:582:38:198:3029:40
9:33
+0:48
20M
20.00 mi13:44:152:51:368:3513:17
9:46
+0:13
21M
21.00 mi13:54:403:02:018:4010:25
10:25
+0:39
35K
21.75 mi14:05:173:12:388:5110:37
14:11
+3:46
23M
23.00 mi14:16:583:24:198:5311:41
9:20
-4:51
24M
24.00 mi14:28:313:35:529:0011:33
11:33
+2:13
40K
24.85 mi14:39:073:46:289:0710:36
12:24
+0:51
25.2M
25.20 mi14:42:353:49:569:073:28
10:03
-2:21
Finish
26.22 mi14:51:273:58:489:078:52
8:42
-1:21

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

7:49 /mi

Average Pace

9:07 /mi

Slowest Pace

14:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:20:58

34% of race

Time at Steady Pace

1:54:39

48% of race

Time at Slower Pace

43:11

18% of race

Average Pace: 9:06 /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 mi11:16:5624:177:4924:17
7:49
#14981
10K
6.21 mi11:41:5049:117:5524:54
8:01
#15841
15K
9.32 mi12:08:181:15:398:0726:28
8:31
#17205
20K
12.43 mi12:34:211:41:428:1126:03
8:23
#17245
Half
13.11 mi12:40:051:47:268:125:44
8:24
#17300
25K
15.53 mi13:01:182:08:398:1721:13
8:45
#17493
30K
18.64 mi13:30:582:38:198:3029:40
9:33
#18066
20M
20.00 mi13:44:152:51:368:3513:17
9:46
#18307
21M
21.00 mi13:54:403:02:018:4010:25
10:25
#18408
35K
21.75 mi14:05:173:12:388:5110:37
14:11
#19409
23M
23.00 mi14:16:583:24:198:5311:41
9:20
#19327
24M
24.00 mi14:28:313:35:529:0011:33
11:33
#19767
40K
24.85 mi14:39:073:46:289:0710:36
12:24
#20234
25.2M
25.20 mi14:42:353:49:569:073:28
10:03
#20181
Finish
26.22 mi14:51:273:58:489:078:52
8:42
#20127
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi149814522452219451(Top 68%)7145(Top 58%)7145(Top 416%)
10K6.21 mi3.10 mi15841-8605046-5245046-52416618(Top 59%)5498(Top 45%)5498(Top 320%)
15K9.32 mi3.11 mi17205-13645836-7905836-79019451(Top 68%)7145(Top 58%)7145(Top 416%)
20K12.43 mi3.11 mi17245-405887-515887-5117473(Top 62%)6041(Top 49%)6041(Top 352%)
Half13.11 mi0.68 mi17300-555926-395926-3918671(Top 66%)6730(Top 55%)6730(Top 392%)
25K15.53 mi2.42 mi17493-1936054-1286054-12818686(Top 66%)6809(Top 56%)6809(Top 396%)
30K18.64 mi3.11 mi18066-5736435-3816435-38120140(Top 71%)7732(Top 63%)7732(Top 450%)
20M20.00 mi1.36 mi18307-2416588-1536588-15320221(Top 71%)7923(Top 65%)7923(Top 461%)
21M21.00 mi1.00 mi18408-1016675-876675-8719764(Top 70%)7773(Top 64%)7773(Top 452%)
35K21.75 mi0.75 mi19409-10017253-5787253-57827788(Top 98%)12001(Top 98%)12001(Top 699%)
23M23.00 mi1.25 mi19327+827238+157238+1517957(Top 63%)6972(Top 57%)6972(Top 406%)
24M24.00 mi1.00 mi19767-4407517-2797517-27924976(Top 88%)10617(Top 87%)10617(Top 618%)
40K24.85 mi0.85 mi20234-4677788-2717788-27125529(Top 90%)10921(Top 89%)10921(Top 636%)
25.2M25.20 mi0.35 mi20181+537763+257763+2517341(Top 61%)6791(Top 56%)6791(Top 395%)
Finish26.22 mi1.02 mi20127+547744+197744+1917509(Top 62%)6831(Top 56%)6831(Top 398%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21stories
+97ft-345ft

Overall

19451

Females

7145

F40-44

7145

5K→10K

3.1 - 6.2 mi

Top 59%
×5stories
+79ft-138ft

Overall

16618

Females

5498

F40-44

5498

10K→15K

6.2 - 9.3 mi

Top 68%
×3stories
+67ft-78ft

Overall

19451

Females

7145

F40-44

7145

15K→20K

9.3 - 12.4 mi

Top 62%
×5stories
+106ft-86ft

Overall

17473

Females

6041

F40-44

6041

20K→Half

12.4 - 13.1 mi

Top 66%
×2stories
+19ft-37ft

Overall

18671

Females

6730

F40-44

6730

Half→25K

13.1 - 15.5 mi

Top 66%
×4stories
+66ft-88ft

Overall

18686

Females

6809

F40-44

6809

25K→30K

15.5 - 18.6 mi

Top 71%
×9stories
+181ft-148ft

Overall

20140

Females

7732

F40-44

7732

30K→20M

18.6 - 20.0 mi

Top 71%
×5stories
+64ft-50ft

Overall

20221

Females

7923

F40-44

7923

20M→21M

20.0 - 21.0 mi

Top 70%
×8stories
+106ft-24ft

Overall

19764

Females

7773

F40-44

7773

21M→35K

21.0 - 21.8 mi

Top 98%
×7stories
+17ft-86ft

Overall

27788

Females

12001

F40-44

12001

35K→23M

21.8 - 23.0 mi

Top 63%
×5stories
+23ft-63ft

Overall

17957

Females

6972

F40-44

6972

23M→24M

23.0 - 24.0 mi

Top 88%
×6stories
+12ft-82ft

Overall

24976

Females

10617

F40-44

10617

24M→40K

24.0 - 24.9 mi

Top 90%
×1story
+6ft-20ft

Overall

25529

Females

10921

F40-44

10921

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

17341

Females

6791

F40-44

6791

25.2M→Finish

25.2 - 26.2 mi

Top 62%
×2stories
+22ft-21ft

Overall

17509

Females

6831

F40-44

6831

Passing Analysis

Category:
Athletes Passed
947
Passed By
6093
Net Change
-5146
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14981
5K → 10K86946-860#14981#15841
10K → 15K261390-1364#15841#17205
15K → 20K179219-40#17205#17245
20K → Half1469-55#17245#17300
Half → 25K119312-193#17300#17493
25K → 30K92665-573#17493#18066
30K → 20M55296-241#18066#18307
20M → 21M71172-101#18307#18408
21M → 35K41005-1001#18408#19409
35K → 23M13250+82#19409#19327
23M → 24M14454-440#19327#19767
24M → 40K5472-467#19767#20234
40K → 25.2M6310+53#20234#20181
25.2M → Finish8733+54#20181#20127
TOTALS9476093-5146
📊

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