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BOSTON MARATHON 2025

Chelsey Bowermaster

Bib: 14008•F

IA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 30%
Gender (Female)
#0 / 12228
Top 12%
Division (F18-39)
#0 / 5469
Top 23%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:38
Rank: #13180
Start → 5K
23:38 | 7:36/mi
10K· 6.21 mi
46:08
Rank: #11461 (+1719)
5K → 10K
22:30 | 7:15/mi
15K· 9.32 mi
1:08:35
Rank: #10704 (+757)
10K → 15K
22:27 | 7:14/mi
20K· 12.43 mi
1:31:08
Rank: #10164 (+540)
15K → 20K
22:33 | 7:15/mi
Half· 13.11 mi
1:35:59
Rank: #10066 (+98)
20K → Half
4:51 | 7:07/mi
25K· 15.53 mi
1:53:45
Rank: #9755 (+311)
Half → 25K
17:46 | 7:20/mi
30K· 18.64 mi
2:17:15
Rank: #9390 (+365)
25K → 30K
23:30 | 7:34/mi
20M
2:27:33
Rank: #9210 (+180)
30K → 20M
10:18 | 7:35/mi
21M
2:35:37
Rank: #9073 (+137)
20M → 21M
8:04 | 8:04/mi
35K· 21.75 mi
2:41:11
Rank: #9019 (+54)
21M → 35K
5:34 | 7:26/mi
23M
2:50:37
Rank: #8791 (+228)
35K → 23M
9:26 | 7:32/mi
24M
2:57:59
Rank: #8667 (+124)
23M → 24M
7:22 | 7:22/mi
40K· 24.85 mi
3:04:25
Rank: #8542 (+125)
24M → 40K
6:26 | 7:31/mi
25.2M
3:07:15
Rank: #8496 (+46)
40K → 25.2M
2:50 | 8:13/mi
Finish· 26.22 mi
3:14:32
Rank: #8393 (+103)
25.2M → Finish
7:17 | 7:09/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:59
Pace7:19 /mi
2nd Half
Distance13.11 mi
Time1:38:33
Pace7:31 /mi
📊Positive Split: 2.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:1623:387:3623:38
7:36
-
10K
6.21 mi11:36:4646:087:2522:30
7:15
-0:21
15K
9.32 mi11:59:131:08:357:2122:27
7:14
-0:01
20K
12.43 mi12:21:461:31:087:2022:33
7:15
+0:01
Half
13.11 mi12:26:371:35:597:194:51
7:07
-0:08
25K
15.53 mi12:44:231:53:457:1917:46
7:20
+0:13
30K
18.64 mi13:07:532:17:157:2223:30
7:34
+0:14
20M
20.00 mi13:18:112:27:337:2310:18
7:35
+0:01
21M
21.00 mi13:26:152:35:377:258:04
8:04
+0:29
35K
21.75 mi13:31:492:41:117:255:34
7:26
-0:38
23M
23.00 mi13:41:152:50:377:259:26
7:32
+0:06
24M
24.00 mi13:48:372:57:597:257:22
7:22
-0:10
40K
24.85 mi13:55:033:04:257:256:26
7:31
+0:09
25.2M
25.20 mi13:57:533:07:157:262:50
8:13
+0:42
Finish
26.22 mi14:05:103:14:327:257:17
7:09
-1:04

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

7:07 /mi

Average Pace

7:25 /mi

Slowest Pace

8:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:03:38

94% of race

Time at Steady Pace

10:54

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:25 /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 mi11:14:1623:387:3623:38
7:36
#13180
10K
6.21 mi11:36:4646:087:2522:30
7:15
#11461
15K
9.32 mi11:59:131:08:357:2122:27
7:14
#10704
20K
12.43 mi12:21:461:31:087:2022:33
7:15
#10164
Half
13.11 mi12:26:371:35:597:194:51
7:07
#10066
25K
15.53 mi12:44:231:53:457:1917:46
7:20
#9755
30K
18.64 mi13:07:532:17:157:2223:30
7:34
#9390
20M
20.00 mi13:18:112:27:337:2310:18
7:35
#9210
21M
21.00 mi13:26:152:35:377:258:04
8:04
#9073
35K
21.75 mi13:31:492:41:117:255:34
7:26
#9019
23M
23.00 mi13:41:152:50:377:259:26
7:32
#8791
24M
24.00 mi13:48:372:57:597:257:22
7:22
#8667
40K
24.85 mi13:55:033:04:257:256:26
7:31
#8542
25.2M
25.20 mi13:57:533:07:157:262:50
8:13
#8496
Finish
26.22 mi14:05:103:14:327:257:17
7:09
#8393
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi13180341734179347(Top 33%)1582(Top 13%)1582(Top 29%)
10K6.21 mi3.10 mi11461+17192531+8862531+8869873(Top 35%)1775(Top 15%)1775(Top 32%)
15K9.32 mi3.11 mi10704+7572182+3492182+3499347(Top 33%)1582(Top 13%)1582(Top 29%)
20K12.43 mi3.11 mi10164+5401942+2401942+2408703(Top 31%)1400(Top 11%)1400(Top 26%)
Half13.11 mi0.68 mi10066+981903+391903+398435(Top 30%)1273(Top 10%)1273(Top 23%)
25K15.53 mi2.42 mi9755+3111793+1101793+1108593(Top 30%)1464(Top 12%)1464(Top 27%)
30K18.64 mi3.11 mi9390+3651676+1171676+1178185(Top 29%)1467(Top 12%)1467(Top 27%)
20M20.00 mi1.36 mi9210+1801627+491627+497559(Top 27%)1360(Top 11%)1360(Top 25%)
21M21.00 mi1.00 mi9073+1371605+221605+227770(Top 27%)1616(Top 13%)1616(Top 30%)
35K21.75 mi0.75 mi9019+541603+21603+28247(Top 29%)1775(Top 15%)1775(Top 32%)
23M23.00 mi1.25 mi8791+2281551+521551+526848(Top 24%)1331(Top 11%)1331(Top 24%)
24M24.00 mi1.00 mi8667+1241534+171534+176861(Top 24%)1405(Top 11%)1405(Top 26%)
40K24.85 mi0.85 mi8542+1251522+121522+126966(Top 25%)1537(Top 13%)1537(Top 28%)
25.2M25.20 mi0.35 mi8496+461520+21520+27213(Top 25%)1729(Top 14%)1729(Top 32%)
Finish26.22 mi1.02 mi8393+1031506+141506+146719(Top 24%)1540(Top 13%)1540(Top 28%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21stories
+97ft-345ft

Overall

9347

Females

1582

F18-39

1582

5K→10K

3.1 - 6.2 mi

Top 35%
×5stories
+79ft-138ft

Overall

9873

Females

1775

F18-39

1775

10K→15K

6.2 - 9.3 mi

Top 33%
×3stories
+67ft-78ft

Overall

9347

Females

1582

F18-39

1582

15K→20K

9.3 - 12.4 mi

Top 31%
×5stories
+106ft-86ft

Overall

8703

Females

1400

F18-39

1400

20K→Half

12.4 - 13.1 mi

Top 30%
×2stories
+19ft-37ft

Overall

8435

Females

1273

F18-39

1273

Half→25K

13.1 - 15.5 mi

Top 30%
×4stories
+66ft-88ft

Overall

8593

Females

1464

F18-39

1464

25K→30K

15.5 - 18.6 mi

Top 29%
×9stories
+181ft-148ft

Overall

8185

Females

1467

F18-39

1467

30K→20M

18.6 - 20.0 mi

Top 27%
×5stories
+64ft-50ft

Overall

7559

Females

1360

F18-39

1360

20M→21M

20.0 - 21.0 mi

Top 27%
×8stories
+106ft-24ft

Overall

7770

Females

1616

F18-39

1616

21M→35K

21.0 - 21.8 mi

Top 29%
×7stories
+17ft-86ft

Overall

8247

Females

1775

F18-39

1775

35K→23M

21.8 - 23.0 mi

Top 24%
×5stories
+23ft-63ft

Overall

6848

Females

1331

F18-39

1331

23M→24M

23.0 - 24.0 mi

Top 24%
×6stories
+12ft-82ft

Overall

6861

Females

1405

F18-39

1405

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

6966

Females

1537

F18-39

1537

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

7213

Females

1729

F18-39

1729

25.2M→Finish

25.2 - 26.2 mi

Top 24%
×2stories
+22ft-21ft

Overall

6719

Females

1540

F18-39

1540

Passing Analysis

Category:
Athletes Passed
5059*
Passed By
272
Net Change
+4787
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13180
5K → 10K17245+1719#13180#11461
10K → 15K7669+757#11461#10704
15K → 20K5488+540#10704#10164
20K → Half1013+98#10164#10066
Half → 25K330*19+311#10066#9755
25K → 30K42257+365#9755#9390
30K → 20M19515+180#9390#9210
20M → 21M17134+137#9210#9073
21M → 35K8632+54#9073#9019
35K → 23M24214+228#9019#8791
23M → 24M14117+124#8791#8667
24M → 40K15328+125#8667#8542
40K → 25.2M5610+46#8542#8496
25.2M → Finish12421+103#8496#8393
TOTALS5059*272+4787

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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