Boston Marathon logo
BOSTON MARATHON 2025

Catherine Hearn

Bib: 29071•F

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
32:21
Rank: #26562
Start → 5K
32:21 | 10:25/mi
10K· 6.21 mi
1:07:10
Rank: #27045 (-483)
5K → 10K
34:49 | 11:12/mi
15K· 9.32 mi
1:45:18
Rank: #27437 (-392)
10K → 15K
38:08 | 12:16/mi
20K· 12.43 mi
2:24:11
Rank: #27478 (-41)
15K → 20K
38:53 | 12:31/mi
Half· 13.11 mi
2:32:01
Rank: #27458 (+20)
20K → Half
7:50 | 11:29/mi
25K· 15.53 mi
3:04:18
Rank: #27486 (-28)
Half → 25K
32:17 | 13:19/mi
30K· 18.64 mi
3:45:38
Rank: #27399 (+87)
25K → 30K
41:20 | 13:18/mi
20M
4:02:53
Rank: #27318 (+81)
30K → 20M
17:15 | 12:42/mi
21M
4:16:23
Rank: #27262 (+56)
20M → 21M
13:30 | 13:30/mi
35K· 21.75 mi
4:24:47
Rank: #27196 (+66)
21M → 35K
8:24 | 11:14/mi
23M
4:39:30
Rank: #27108 (+88)
35K → 23M
14:43 | 11:45/mi
24M
4:51:57
Rank: #27098 (+10)
23M → 24M
12:27 | 12:27/mi
40K· 24.85 mi
5:02:36
Rank: #27053 (+45)
24M → 40K
10:39 | 12:27/mi
25.2M
5:07:01
Rank: #27029 (+24)
40K → 25.2M
4:25 | 12:48/mi
Finish· 26.22 mi
5:17:35
Rank: #26957 (+72)
25.2M → Finish
10:34 | 10:22/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
Time2:32:01
Pace11:36 /mi
2nd Half
Distance13.11 mi
Time2:45:34
Pace12:38 /mi
📊Positive Split: 8.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:4532:2110:2532:21
10:25
-
10K
6.21 mi12:25:341:07:1010:4934:49
11:12
+0:47
15K
9.32 mi13:03:421:45:1811:1838:08
12:16
+1:04
20K
12.43 mi13:42:352:24:1111:3638:53
12:31
+0:15
Half
13.11 mi13:50:252:32:0111:367:50
11:29
-1:02
25K
15.53 mi14:22:423:04:1811:5232:17
13:19
+1:50
30K
18.64 mi15:04:023:45:3812:0641:20
13:18
-0:01
20M
20.00 mi15:21:174:02:5312:0917:15
12:42
-0:36
21M
21.00 mi15:34:474:16:2312:1313:30
13:30
+0:48
35K
21.75 mi15:43:114:24:4712:118:24
11:14
-2:16
23M
23.00 mi15:57:544:39:3012:0914:43
11:45
+0:31
24M
24.00 mi16:10:214:51:5712:1012:27
12:27
+0:42
40K
24.85 mi16:21:005:02:3612:1010:39
12:27
0:00
25.2M
25.20 mi16:25:255:07:0112:114:25
12:48
+0:21
Finish
26.22 mi16:35:595:17:3512:0710:34
10:22
-2:26

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

10:22 /mi

Average Pace

12:07 /mi

Slowest Pace

13:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:48:41

34% of race

Time at Steady Pace

2:01:47

38% of race

Time at Slower Pace

1:27:07

27% of race

Average Pace: 12:07 /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 mi11:50:4532:2110:2532:21
10:25
#26562
10K
6.21 mi12:25:341:07:1010:4934:49
11:12
#27045
15K
9.32 mi13:03:421:45:1811:1838:08
12:16
#27437
20K
12.43 mi13:42:352:24:1111:3638:53
12:31
#27478
Half
13.11 mi13:50:252:32:0111:367:50
11:29
#27458
25K
15.53 mi14:22:423:04:1811:5232:17
13:19
#27486
30K
18.64 mi15:04:023:45:3812:0641:20
13:18
#27399
20M
20.00 mi15:21:174:02:5312:0917:15
12:42
#27318
21M
21.00 mi15:34:474:16:2312:1313:30
13:30
#27262
35K
21.75 mi15:43:114:24:4712:118:24
11:14
#27196
23M
23.00 mi15:57:544:39:3012:0914:43
11:45
#27108
24M
24.00 mi16:10:214:51:5712:1012:27
12:27
#27098
40K
24.85 mi16:21:005:02:3612:1010:39
12:27
#27053
25.2M
25.20 mi16:25:255:07:0112:114:25
12:48
#27029
Finish
26.22 mi16:35:595:17:3512:0710:34
10:22
#26957
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi26562110781107827800(Top 98%)11859(Top 97%)11859(Top 217%)
10K6.21 mi3.10 mi27045-48311371-29311371-29327302(Top 96%)11548(Top 94%)11548(Top 211%)
15K9.32 mi3.11 mi27437-39211619-24811619-24827800(Top 98%)11859(Top 97%)11859(Top 217%)
20K12.43 mi3.11 mi27478-4111649-3011649-3027527(Top 97%)11713(Top 96%)11713(Top 214%)
Half13.11 mi0.68 mi27458+2011633+1611633+1627032(Top 95%)11436(Top 94%)11436(Top 209%)
25K15.53 mi2.42 mi27486-2811676-4311676-4327507(Top 97%)11722(Top 96%)11722(Top 214%)
30K18.64 mi3.11 mi27399+8711641+3511641+3526963(Top 95%)11471(Top 94%)11471(Top 210%)
20M20.00 mi1.36 mi27318+8111596+4511596+4526134(Top 92%)11082(Top 91%)11082(Top 203%)
21M21.00 mi1.00 mi27262+5611568+2811568+2825661(Top 90%)10888(Top 89%)10888(Top 199%)
35K21.75 mi0.75 mi27196+6611537+3111537+3124648(Top 87%)10408(Top 85%)10408(Top 190%)
23M23.00 mi1.25 mi27108+8811491+4611491+4624675(Top 87%)10439(Top 85%)10439(Top 191%)
24M24.00 mi1.00 mi27098+1011495-411495-426257(Top 92%)11244(Top 92%)11244(Top 206%)
40K24.85 mi0.85 mi27053+4511472+2311472+2325589(Top 90%)10945(Top 90%)10945(Top 200%)
25.2M25.20 mi0.35 mi27029+2411461+1111461+1124722(Top 87%)10540(Top 86%)10540(Top 193%)
Finish26.22 mi1.02 mi26957+7211424+3711424+3723946(Top 84%)10149(Top 83%)10149(Top 186%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 98%
×21stories
+97ft-345ft

Overall

27800

Females

11859

F18-39

11859

5K→10K

3.1 - 6.2 mi

Top 96%
×5stories
+79ft-138ft

Overall

27302

Females

11548

F18-39

11548

10K→15K

6.2 - 9.3 mi

Top 98%
×3stories
+67ft-78ft

Overall

27800

Females

11859

F18-39

11859

15K→20K

9.3 - 12.4 mi

Top 97%
×5stories
+106ft-86ft

Overall

27527

Females

11713

F18-39

11713

20K→Half

12.4 - 13.1 mi

Top 95%
×2stories
+19ft-37ft

Overall

27032

Females

11436

F18-39

11436

Half→25K

13.1 - 15.5 mi

Top 97%
×4stories
+66ft-88ft

Overall

27507

Females

11722

F18-39

11722

25K→30K

15.5 - 18.6 mi

Top 95%
×9stories
+181ft-148ft

Overall

26963

Females

11471

F18-39

11471

30K→20M

18.6 - 20.0 mi

Top 92%
×5stories
+64ft-50ft

Overall

26134

Females

11082

F18-39

11082

20M→21M

20.0 - 21.0 mi

Top 90%
×8stories
+106ft-24ft

Overall

25661

Females

10888

F18-39

10888

21M→35K

21.0 - 21.8 mi

Top 87%
×7stories
+17ft-86ft

Overall

24648

Females

10408

F18-39

10408

35K→23M

21.8 - 23.0 mi

Top 87%
×5stories
+23ft-63ft

Overall

24675

Females

10439

F18-39

10439

23M→24M

23.0 - 24.0 mi

Top 92%
×6stories
+12ft-82ft

Overall

26257

Females

11244

F18-39

11244

24M→40K

24.0 - 24.9 mi

Top 90%
×1story
+6ft-20ft

Overall

25589

Females

10945

F18-39

10945

40K→25.2M

24.9 - 25.2 mi

Top 87%
×1story
+13ft-16ft

Overall

24722

Females

10540

F18-39

10540

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2stories
+22ft-21ft

Overall

23946

Females

10149

F18-39

10149

Passing Analysis

Category:
Athletes Passed
798
Passed By
1193
Net Change
-395
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26562
5K → 10K48531-483#26562#27045
10K → 15K18410-392#27045#27437
15K → 20K63104-41#27437#27478
20K → Half299+20#27478#27458
Half → 25K5482-28#27458#27486
25K → 30K11932+87#27486#27399
30K → 20M821+81#27399#27318
20M → 21M582+56#27318#27262
21M → 35K671+66#27262#27196
35K → 23M902+88#27196#27108
23M → 24M2212+10#27108#27098
24M → 40K516+45#27098#27053
40K → 25.2M240+24#27053#27029
25.2M → Finish731+72#27029#26957
TOTALS7981193-395
📊

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