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BOSTON MARATHON 2025

Jenny Walker-Leach

Bib: 21255 F GB

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 46%
Masters (Masters Women)
#0 / 6759
Top 33%
Division (F50-54)
#0 / 1303
Top 26%
Race Day Weather
50°/40°F
broken clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:51/mi
24:24
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:57/mi
49:07
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:59/mi
1:13:56
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:16/mi
1:39:37
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:14/mi
1:45:14
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:29/mi
2:05:48
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:58/mi
2:33:41
↑ 181↓ 1480.2%
138 ft elev
20M
9:00/mi
2:45:55
↑ 64↓ 500.2%
148 ft elev
21M
9:57/mi
2:55:52
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
8:32/mi
3:02:15
↑ 17↓ 861.7%
156 ft elev
23M
8:55/mi
3:13:25
↑ 23↓ 630.6%
116 ft elev
24M
8:43/mi
3:22:08
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:50/mi
3:29:41
↓ 200.3%
20 ft elev
25.2M
9:43/mi
3:33:02
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:34/mi
3:41:46
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:45:148:02 /mi⚡ faster
2nd Half
1:56:328:53 /mi+10.7%
Positive split — 10.7% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
24:247:513.11 mi24:24
7:51
-
10K
49:077:543.10 mi24:43
7:57
+0:06
15K
1:13:567:563.11 mi24:49
7:59
+0:02
20K
1:39:378:013.11 mi25:41
8:16
+0:17
Half(13.11 mi)
1:45:148:020.68 mi5:37
8:14
-0:02
25K
2:05:488:062.42 mi20:34
8:29
+0:15
30K
2:33:418:153.11 mi27:53
8:58
+0:29
20M
2:45:558:181.36 mi12:14
9:00
+0:02
21M
2:55:528:221.00 mi9:57
9:57
+0:57
35K
3:02:158:230.75 mi6:23
8:32
-1:25
23M
3:13:258:251.25 mi11:10
8:55
+0:23
24M
3:22:088:251.00 mi8:43
8:43
-0:12
40K
3:29:418:260.85 mi7:33
8:50
+0:07
25.2M
3:33:028:270.35 mi3:21
9:43
+0:53
Finish(26.22 mi)
3:41:468:281.02 mi8:44
8:34
-1:09
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

7:51 /mi

Average Pace

8:28 /mi

Slowest Pace

9:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

1:45:14

47% of race

Time at Steady Pace

51:57

23% of race

Time at Slower Pace

1:04:35

29% of race

Average Pace: 8:27 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi15301471647161597551305130
10K3.10 mi15731-4304978-2624978-2621612851995199
15K3.11 mi15783-525007-295007-291597551305130
20K3.11 mi16065-2825192-1855192-1851675356375637
Half(13.11 mi)0.68 mi16154-895250-585250-581750760336033
25K2.42 mi16318-1645353-1035353-1031708558985898
30K3.11 mi16486-1685519-1665519-1661755763376337
20M1.36 mi164865546-275546-271680960346034
21M1.00 mi16547-615607-615607-611811568526852
35K0.75 mi16492+555599+85599+81569756155615
23M1.25 mi16405+875577+225577+221580657775777
24M1.00 mi16358+475581-45581-41585458445844
40K0.85 mi16316+425587-65587-61537657335733
25.2M0.35 mi16300+165584+35584+31573459455945
Finish(26.22 mi)1.02 mi16313-135611-275611-271668763926392

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 56%
×21story building
+97ft-345ft

Overall

15975

Females

5130

F50-54

5130

5K→10K

3.1 - 6.2 mi

Top 57%
×5story building
+79ft-138ft

Overall

16128

Females

5199

F50-54

5199

10K→15K

6.2 - 9.3 mi

Top 56%
×3story building
+67ft-78ft

Overall

15975

Females

5130

F50-54

5130

15K→20K

9.3 - 12.4 mi

Top 59%
×5story building
+106ft-86ft

Overall

16753

Females

5637

F50-54

5637

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

17507

Females

6033

F50-54

6033

Half→25K

13.1 - 15.5 mi

Top 60%
×4story building
+66ft-88ft

Overall

17085

Females

5898

F50-54

5898

25K→30K

15.5 - 18.6 mi

Top 62%
×9story building
+181ft-148ft

Overall

17557

Females

6337

F50-54

6337

30K→20M

18.6 - 20.0 mi

Top 59%
×5story building
+64ft-50ft

Overall

16809

Females

6034

F50-54

6034

20M→21M

20.0 - 21.0 mi

Top 64%
×8story building
+106ft-24ft

Overall

18115

Females

6852

F50-54

6852

21M→35K

21.0 - 21.8 mi

Top 55%
×7story building
+17ft-86ft

Overall

15697

Females

5615

F50-54

5615

35K→23M

21.8 - 23.0 mi

Top 56%
×5story building
+23ft-63ft

Overall

15806

Females

5777

F50-54

5777

23M→24M

23.0 - 24.0 mi

Top 56%
×6story building
+12ft-82ft

Overall

15854

Females

5844

F50-54

5844

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

15376

Females

5733

F50-54

5733

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

15734

Females

5945

F50-54

5945

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2story building
+22ft-21ft

Overall

16687

Females

6392

F50-54

6392

Passing Analysis

Category:
Passed
1520
Passed By
2532
Net Change
-1012
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15301
5K → 10K162592-430#15301#15731
10K → 15K188240-52#15731#15783
15K → 20K121403-282#15783#16065
20K → Half11100-89#16065#16154
Half → 25K115279-164#16154#16318
25K → 30K180348-168#16318#16486
30K → 20M1091090#16486#16486
20M → 21M95156-61#16486#16547
21M → 35K8934+55#16547#16492
35K → 23M15770+87#16492#16405
23M → 24M10356+47#16405#16358
24M → 40K8745+42#16358#16316
40K → 25.2M3822+16#16316#16300
25.2M → Finish6578-13#16300#16313
TOTALS15202532-1012

Passing Charts

Category:
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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