Boston Marathon logo
BOSTON MARATHON 2025

Adah Chapman

Bib: 17848•F

NH

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 41%
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
23:38
Rank: #13203
Start → 5K
23:38 | 7:36/mi
10K· 6.21 mi
48:22
Rank: #14636 (-1433)
5K → 10K
24:44 | 7:58/mi
15K· 9.32 mi
1:12:46
Rank: #14683 (-47)
10K → 15K
24:24 | 7:51/mi
20K· 12.43 mi
1:38:18
Rank: #15190 (-507)
15K → 20K
25:32 | 8:13/mi
Half· 13.11 mi
1:43:47
Rank: #15246 (-56)
20K → Half
5:29 | 8:02/mi
25K· 15.53 mi
2:04:09
Rank: #15486 (-240)
Half → 25K
20:22 | 8:24/mi
30K· 18.64 mi
2:30:56
Rank: #15489 (-3)
25K → 30K
26:47 | 8:37/mi
20M
2:43:03
Rank: #15501 (-12)
30K → 20M
12:07 | 8:55/mi
21M
2:52:15
Rank: #15415 (+86)
20M → 21M
9:12 | 9:12/mi
35K· 21.75 mi
2:58:28
Rank: #15344 (+71)
21M → 35K
6:13 | 8:19/mi
23M
3:09:47
Rank: #15396 (-52)
35K → 23M
11:19 | 9:02/mi
24M
3:18:33
Rank: #15418 (-22)
23M → 24M
8:46 | 8:46/mi
40K· 24.85 mi
3:26:15
Rank: #15437 (-19)
24M → 40K
7:42 | 9:00/mi
25.2M
3:29:34
Rank: #15412 (+25)
40K → 25.2M
3:19 | 9:37/mi
Finish· 26.22 mi
3:37:51
Rank: #15348 (+64)
25.2M → Finish
8:17 | 8:08/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
Time1:43:47
Pace7:55 /mi
2nd Half
Distance13.11 mi
Time1:54:04
Pace8:42 /mi
📊Positive Split: 9.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:4123:387:3623:38
7:36
-
10K
6.21 mi11:38:2548:227:4724:44
7:58
+0:22
15K
9.32 mi12:02:491:12:467:4824:24
7:51
-0:07
20K
12.43 mi12:28:211:38:187:5525:32
8:13
+0:22
Half
13.11 mi12:33:501:43:477:555:29
8:02
-0:11
25K
15.53 mi12:54:122:04:098:0020:22
8:24
+0:22
30K
18.64 mi13:20:592:30:568:0626:47
8:37
+0:13
20M
20.00 mi13:33:062:43:038:0912:07
8:55
+0:18
21M
21.00 mi13:42:182:52:158:129:12
9:12
+0:17
35K
21.75 mi13:48:312:58:288:126:13
8:19
-0:53
23M
23.00 mi13:59:503:09:478:1511:19
9:02
+0:43
24M
24.00 mi14:08:363:18:338:168:46
8:46
-0:16
40K
24.85 mi14:16:183:26:158:187:42
9:00
+0:14
25.2M
25.20 mi14:19:373:29:348:193:19
9:37
+0:37
Finish
26.22 mi14:27:543:37:518:198:17
8:08
-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

7:36 /mi

Average Pace

8:19 /mi

Slowest Pace

9:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:18:15

36% of race

Time at Steady Pace

1:27:11

40% of race

Time at Slower Pace

52:25

24% of race

Average Pace: 8:19 /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 mi11:13:4123:387:3623:38
7:36
#13203
10K
6.21 mi11:38:2548:227:4724:44
7:58
#14636
15K
9.32 mi12:02:491:12:467:4824:24
7:51
#14683
20K
12.43 mi12:28:211:38:187:5525:32
8:13
#15190
Half
13.11 mi12:33:501:43:477:555:29
8:02
#15246
25K
15.53 mi12:54:122:04:098:0020:22
8:24
#15486
30K
18.64 mi13:20:592:30:568:0626:47
8:37
#15489
20M
20.00 mi13:33:062:43:038:0912:07
8:55
#15501
21M
21.00 mi13:42:182:52:158:129:12
9:12
#15415
35K
21.75 mi13:48:312:58:288:126:13
8:19
#15344
23M
23.00 mi13:59:503:09:478:1511:19
9:02
#15396
24M
24.00 mi14:08:363:18:338:168:46
8:46
#15418
40K
24.85 mi14:16:183:26:158:187:42
9:00
#15437
25.2M
25.20 mi14:19:373:29:348:193:19
9:37
#15412
Finish
26.22 mi14:27:543:37:518:198:17
8:08
#15348
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi132033440344014860(Top 52%)4506(Top 37%)4506(Top 82%)
10K6.21 mi3.10 mi14636-14334325-8854325-88516171(Top 57%)5225(Top 43%)5225(Top 96%)
15K9.32 mi3.11 mi14683-474365-404365-4014860(Top 52%)4506(Top 37%)4506(Top 82%)
20K12.43 mi3.11 mi15190-5074689-3244689-32416430(Top 58%)5450(Top 45%)5450(Top 100%)
Half13.11 mi0.68 mi15246-564719-304719-3016230(Top 57%)5317(Top 43%)5317(Top 97%)
25K15.53 mi2.42 mi15486-2404880-1614880-16116583(Top 58%)5619(Top 46%)5619(Top 103%)
30K18.64 mi3.11 mi15489-34943-634943-6315512(Top 55%)5183(Top 42%)5183(Top 95%)
20M20.00 mi1.36 mi15501-124972-294972-2916348(Top 58%)5796(Top 47%)5796(Top 106%)
21M21.00 mi1.00 mi15415+864960+124960+1214655(Top 52%)4973(Top 41%)4973(Top 91%)
35K21.75 mi0.75 mi15344+714939+214939+2114349(Top 51%)4880(Top 40%)4880(Top 89%)
23M23.00 mi1.25 mi15396-525012-735012-7316488(Top 58%)6159(Top 50%)6159(Top 113%)
24M24.00 mi1.00 mi15418-225052-405052-4016131(Top 57%)6000(Top 49%)6000(Top 110%)
40K24.85 mi0.85 mi15437-195092-405092-4016349(Top 58%)6226(Top 51%)6226(Top 114%)
25.2M25.20 mi0.35 mi15412+255088+45088+415219(Top 54%)5660(Top 46%)5660(Top 103%)
Finish26.22 mi1.02 mi15348+645073+155073+1513820(Top 49%)4866(Top 40%)4866(Top 89%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 52%
×21stories
+97ft-345ft

Overall

14860

Females

4506

F18-39

4506

5K→10K

3.1 - 6.2 mi

Top 57%
×5stories
+79ft-138ft

Overall

16171

Females

5225

F18-39

5225

10K→15K

6.2 - 9.3 mi

Top 52%
×3stories
+67ft-78ft

Overall

14860

Females

4506

F18-39

4506

15K→20K

9.3 - 12.4 mi

Top 58%
×5stories
+106ft-86ft

Overall

16430

Females

5450

F18-39

5450

20K→Half

12.4 - 13.1 mi

Top 57%
×2stories
+19ft-37ft

Overall

16230

Females

5317

F18-39

5317

Half→25K

13.1 - 15.5 mi

Top 58%
×4stories
+66ft-88ft

Overall

16583

Females

5619

F18-39

5619

25K→30K

15.5 - 18.6 mi

Top 55%
×9stories
+181ft-148ft

Overall

15512

Females

5183

F18-39

5183

30K→20M

18.6 - 20.0 mi

Top 58%
×5stories
+64ft-50ft

Overall

16348

Females

5796

F18-39

5796

20M→21M

20.0 - 21.0 mi

Top 52%
×8stories
+106ft-24ft

Overall

14655

Females

4973

F18-39

4973

21M→35K

21.0 - 21.8 mi

Top 51%
×7stories
+17ft-86ft

Overall

14349

Females

4880

F18-39

4880

35K→23M

21.8 - 23.0 mi

Top 58%
×5stories
+23ft-63ft

Overall

16488

Females

6159

F18-39

6159

23M→24M

23.0 - 24.0 mi

Top 57%
×6stories
+12ft-82ft

Overall

16131

Females

6000

F18-39

6000

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

16349

Females

6226

F18-39

6226

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

15219

Females

5660

F18-39

5660

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2stories
+22ft-21ft

Overall

13820

Females

4866

F18-39

4866

Passing Analysis

Category:
Athletes Passed
1404
Passed By
3549
Net Change
-2145
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13203
5K → 10K411474-1433#13203#14636
10K → 15K179226-47#14636#14683
15K → 20K104611-507#14683#15190
20K → Half2379-56#15190#15246
Half → 25K106346-240#15246#15486
25K → 30K237240-3#15486#15489
30K → 20M119131-12#15489#15501
20M → 21M14559+86#15501#15415
21M → 35K9726+71#15415#15344
35K → 23M93145-52#15344#15396
23M → 24M6284-22#15396#15418
24M → 40K6786-19#15418#15437
40K → 25.2M3813+25#15437#15412
25.2M → Finish9329+64#15412#15348
TOTALS14043549-2145
📊

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