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BOSTON MARATHON 2025

Christina Shaw

Bib: 18258•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 42%
Gender (Female)
#0 / 12228
Top 26%
Division (F18-39)
#0 / 5469
Top 44%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:55
Rank: #11122
Start → 5K
22:55 | 7:23/mi
10K· 6.21 mi
46:10
Rank: #11527 (-405)
5K → 10K
23:15 | 7:29/mi
15K· 9.32 mi
1:09:52
Rank: #11957 (-430)
10K → 15K
23:42 | 7:38/mi
20K· 12.43 mi
1:33:45
Rank: #12026 (-69)
15K → 20K
23:53 | 7:41/mi
Half· 13.11 mi
1:39:01
Rank: #12108 (-82)
20K → Half
5:16 | 7:43/mi
25K· 15.53 mi
1:57:56
Rank: #12102 (+6)
Half → 25K
18:55 | 7:48/mi
30K· 18.64 mi
2:23:18
Rank: #12152 (-50)
25K → 30K
25:22 | 8:10/mi
20M
2:34:42
Rank: #12200 (-48)
30K → 20M
11:24 | 8:23/mi
21M
2:43:34
Rank: #12213 (-13)
20M → 21M
8:52 | 8:52/mi
35K· 21.75 mi
2:49:24
Rank: #12145 (+68)
21M → 35K
5:50 | 7:48/mi
23M
2:59:44
Rank: #12080 (+65)
35K → 23M
10:20 | 8:15/mi
24M
3:07:32
Rank: #11958 (+122)
23M → 24M
7:48 | 7:48/mi
40K· 24.85 mi
3:14:39
Rank: #11955 (+3)
24M → 40K
7:07 | 8:19/mi
25.2M
3:17:43
Rank: #11929 (+26)
40K → 25.2M
3:04 | 8:54/mi
Finish· 26.22 mi
3:25:52
Rank: #11948 (-19)
25.2M → Finish
8:09 | 8:00/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:01
Pace7:33 /mi
2nd Half
Distance13.11 mi
Time1:46:51
Pace8:09 /mi
📊Positive Split: 7.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:3622:557:2322:55
7:23
-
10K
6.21 mi11:36:5146:107:2623:15
7:29
+0:06
15K
9.32 mi12:00:331:09:527:3023:42
7:38
+0:09
20K
12.43 mi12:24:261:33:457:3323:53
7:41
+0:03
Half
13.11 mi12:29:421:39:017:335:16
7:43
+0:02
25K
15.53 mi12:48:371:57:567:3618:55
7:48
+0:05
30K
18.64 mi13:13:592:23:187:4125:22
8:10
+0:22
20M
20.00 mi13:25:232:34:427:4411:24
8:23
+0:13
21M
21.00 mi13:34:152:43:347:478:52
8:52
+0:29
35K
21.75 mi13:40:052:49:247:475:50
7:48
-1:04
23M
23.00 mi13:50:252:59:447:4910:20
8:15
+0:27
24M
24.00 mi13:58:133:07:327:497:48
7:48
-0:27
40K
24.85 mi14:05:203:14:397:507:07
8:19
+0:31
25.2M
25.20 mi14:08:243:17:437:513:04
8:54
+0:35
Finish
26.22 mi14:16:333:25:527:518:09
8:00
-0:54

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

7:23 /mi

Average Pace

7:51 /mi

Slowest Pace

8:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

46:10

22% of race

Time at Steady Pace

1:33:33

45% of race

Time at Slower Pace

1:06:09

32% of race

Average Pace: 7:51 /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 mi11:13:3622:557:2322:55
7:23
#11122
10K
6.21 mi11:36:5146:107:2623:15
7:29
#11527
15K
9.32 mi12:00:331:09:527:3023:42
7:38
#11957
20K
12.43 mi12:24:261:33:457:3323:53
7:41
#12026
Half
13.11 mi12:29:421:39:017:335:16
7:43
#12108
25K
15.53 mi12:48:371:57:567:3618:55
7:48
#12102
30K
18.64 mi13:13:592:23:187:4125:22
8:10
#12152
20M
20.00 mi13:25:232:34:427:4411:24
8:23
#12200
21M
21.00 mi13:34:152:43:347:478:52
8:52
#12213
35K
21.75 mi13:40:052:49:247:475:50
7:48
#12145
23M
23.00 mi13:50:252:59:447:4910:20
8:15
#12080
24M
24.00 mi13:58:133:07:327:497:48
7:48
#11958
40K
24.85 mi14:05:203:14:397:507:07
8:19
#11955
25.2M
25.20 mi14:08:243:17:437:513:04
8:54
#11929
Finish
26.22 mi14:16:333:25:527:518:09
8:00
#11948
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi111222341234112878(Top 45%)3375(Top 28%)3375(Top 62%)
10K6.21 mi3.10 mi11527-4052571-2302571-23011975(Top 42%)2807(Top 23%)2807(Top 51%)
15K9.32 mi3.11 mi11957-4302809-2382809-23812878(Top 45%)3375(Top 28%)3375(Top 62%)
20K12.43 mi3.11 mi12026-692885-762885-7612307(Top 43%)3174(Top 26%)3174(Top 58%)
Half13.11 mi0.68 mi12108-822940-552940-5513575(Top 48%)3797(Top 31%)3797(Top 69%)
25K15.53 mi2.42 mi12102+62971-312971-3112384(Top 44%)3324(Top 27%)3324(Top 61%)
30K18.64 mi3.11 mi12152-503073-1023073-10212563(Top 44%)3597(Top 29%)3597(Top 66%)
20M20.00 mi1.36 mi12200-483138-653138-6513086(Top 46%)4021(Top 33%)4021(Top 74%)
21M21.00 mi1.00 mi12213-133191-533191-5312721(Top 45%)3982(Top 33%)3982(Top 73%)
35K21.75 mi0.75 mi12145+683179+123179+1210857(Top 38%)3040(Top 25%)3040(Top 56%)
23M23.00 mi1.25 mi12080+653175+43175+411746(Top 41%)3606(Top 29%)3606(Top 66%)
24M24.00 mi1.00 mi11958+1223148+273148+279848(Top 35%)2736(Top 22%)2736(Top 50%)
40K24.85 mi0.85 mi11955+33194-463194-4612308(Top 43%)4077(Top 33%)4077(Top 75%)
25.2M25.20 mi0.35 mi11929+263189+53189+511243(Top 40%)3617(Top 30%)3617(Top 66%)
Finish26.22 mi1.02 mi11948-193226-373226-3712877(Top 45%)4360(Top 36%)4360(Top 80%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 45%
×21stories
+97ft-345ft

Overall

12878

Females

3375

F18-39

3375

5K→10K

3.1 - 6.2 mi

Top 42%
×5stories
+79ft-138ft

Overall

11975

Females

2807

F18-39

2807

10K→15K

6.2 - 9.3 mi

Top 45%
×3stories
+67ft-78ft

Overall

12878

Females

3375

F18-39

3375

15K→20K

9.3 - 12.4 mi

Top 43%
×5stories
+106ft-86ft

Overall

12307

Females

3174

F18-39

3174

20K→Half

12.4 - 13.1 mi

Top 48%
×2stories
+19ft-37ft

Overall

13575

Females

3797

F18-39

3797

Half→25K

13.1 - 15.5 mi

Top 44%
×4stories
+66ft-88ft

Overall

12384

Females

3324

F18-39

3324

25K→30K

15.5 - 18.6 mi

Top 44%
×9stories
+181ft-148ft

Overall

12563

Females

3597

F18-39

3597

30K→20M

18.6 - 20.0 mi

Top 46%
×5stories
+64ft-50ft

Overall

13086

Females

4021

F18-39

4021

20M→21M

20.0 - 21.0 mi

Top 45%
×8stories
+106ft-24ft

Overall

12721

Females

3982

F18-39

3982

21M→35K

21.0 - 21.8 mi

Top 38%
×7stories
+17ft-86ft

Overall

10857

Females

3040

F18-39

3040

35K→23M

21.8 - 23.0 mi

Top 41%
×5stories
+23ft-63ft

Overall

11746

Females

3606

F18-39

3606

23M→24M

23.0 - 24.0 mi

Top 35%
×6stories
+12ft-82ft

Overall

9848

Females

2736

F18-39

2736

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

12308

Females

4077

F18-39

4077

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1story
+13ft-16ft

Overall

11243

Females

3617

F18-39

3617

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2stories
+22ft-21ft

Overall

12877

Females

4360

F18-39

4360

Passing Analysis

Category:
Athletes Passed
1530
Passed By
2356
Net Change
-826
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11122
5K → 10K116521-405#11122#11527
10K → 15K71501-430#11527#11957
15K → 20K168237-69#11957#12026
20K → Half1395-82#12026#12108
Half → 25K163157+6#12108#12102
25K → 30K233283-50#12102#12152
30K → 20M103151-48#12152#12200
20M → 21M103116-13#12200#12213
21M → 35K9426+68#12213#12145
35K → 23M13570+65#12145#12080
23M → 24M14119+122#12080#11958
24M → 40K8380+3#11958#11955
40K → 25.2M4216+26#11955#11929
25.2M → Finish6584-19#11929#11948
TOTALS15302356-826
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing