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BOSTON MARATHON 2025

Rachel Glazer

Bib: 24223•F

MA

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

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
9:56/mi
30:51
↑ 97↓ 3451.5%
10K· 6.21 mi
9:59/mi
1:01:53
↑ 79↓ 1380.4%
15K· 9.32 mi
9:59/mi
1:32:53
↑ 67↓ 78
20K· 12.43 mi
9:54/mi
2:03:40
↑ 106↓ 860.1%
Half· 13.11 mi
9:49/mi
2:10:22
↑ 19↓ 370.5%
25K· 15.53 mi
9:54/mi
2:34:22
↑ 66↓ 880.2%
30K· 18.64 mi
10:14/mi
3:06:09
↑ 181↓ 1480.2%
20M
10:14/mi
3:20:04
↑ 64↓ 500.2%
21M
10:28/mi
3:30:32
↑ 106↓ 241.6%
35K· 21.75 mi
10:11/mi
3:38:09
↑ 17↓ 861.7%
23M
10:37/mi
3:51:27
↑ 23↓ 630.6%
24M
10:12/mi
4:01:39
↓ 821.3%
40K· 24.85 mi
10:13/mi
4:10:23
↓ 200.3%
25.2M
10:47/mi
4:14:06
↑ 13↓ 160.2%
Finish· 26.22 mi
9:37/mi
4:23:54
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:10:22
Pace9:57 /mi
2nd Half
Distance13.11 mi
Time2:13:32
Pace10:11 /mi
📊Positive Split: 2.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:28:4030:519:5630:51
9:56
-
10K
6.21 mi11:59:421:01:539:5831:02
9:59
+0:03
15K
9.32 mi12:30:421:32:539:5831:00
9:59
0:00
20K
12.43 mi13:01:292:03:409:5730:47
9:54
-0:05
Half
13.11 mi13:08:112:10:229:576:42
9:49
-0:05
25K
15.53 mi13:32:112:34:229:5624:00
9:54
+0:05
30K
18.64 mi14:03:583:06:099:5931:47
10:14
+0:20
20M
20.00 mi14:17:533:20:0410:0013:55
10:14
0:00
21M
21.00 mi14:28:213:30:3210:0210:28
10:28
+0:14
35K
21.75 mi14:35:583:38:0910:027:37
10:11
-0:17
23M
23.00 mi14:49:163:51:2710:0413:18
10:37
+0:26
24M
24.00 mi14:59:284:01:3910:0410:12
10:12
-0:25
40K
24.85 mi15:08:124:10:2310:048:44
10:13
+0:01
25.2M
25.20 mi15:11:554:14:0610:053:43
10:47
+0:34
Finish
26.22 mi15:21:434:23:5410:049:48
9:37
-1:10

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

9:37 /mi

Average Pace

10:04 /mi

Slowest Pace

10:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

4:06:53

94% of race

Time at Steady Pace

17:01

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 10:04 /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 mi11:28:4030:519:5630:51
9:56
#25426
10K
6.21 mi11:59:421:01:539:5831:02
9:59
#25340
15K
9.32 mi12:30:421:32:539:5831:00
9:59
#25199
20K
12.43 mi13:01:292:03:409:5730:47
9:54
#24891
Half
13.11 mi13:08:112:10:229:576:42
9:49
#24850
25K
15.53 mi13:32:112:34:229:5624:00
9:54
#24583
30K
18.64 mi14:03:583:06:099:5931:47
10:14
#24199
20M
20.00 mi14:17:533:20:0410:0013:55
10:14
#24016
21M
21.00 mi14:28:213:30:3210:0210:28
10:28
#23808
35K
21.75 mi14:35:583:38:0910:027:37
10:11
#23741
23M
23.00 mi14:49:163:51:2710:0413:18
10:37
#23651
24M
24.00 mi14:59:284:01:3910:0410:12
10:12
#23581
40K
24.85 mi15:08:124:10:2310:048:44
10:13
#23490
25.2M
25.20 mi15:11:554:14:0610:053:43
10:47
#23416
Finish
26.22 mi15:21:434:23:5410:049:48
9:37
#23377
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi25426104361043624953(Top 88%)10187(Top 83%)10187(Top 782%)
10K6.21 mi3.10 mi25340+8610416+2010416+2025293(Top 89%)10395(Top 85%)10395(Top 798%)
15K9.32 mi3.11 mi25199+14110334+8210334+8224953(Top 88%)10187(Top 83%)10187(Top 782%)
20K12.43 mi3.11 mi24891+30810174+16010174+16024042(Top 85%)9731(Top 80%)9731(Top 747%)
Half13.11 mi0.68 mi24850+4110153+2110153+2124436(Top 86%)9957(Top 81%)9957(Top 764%)
25K15.53 mi2.42 mi24583+26710023+13010023+13023009(Top 81%)9198(Top 75%)9198(Top 706%)
30K18.64 mi3.11 mi24199+3849835+1889835+18822259(Top 78%)8911(Top 73%)8911(Top 684%)
20M20.00 mi1.36 mi24016+1839762+739762+7321705(Top 76%)8741(Top 71%)8741(Top 671%)
21M21.00 mi1.00 mi23808+2089661+1019661+10119926(Top 70%)7874(Top 64%)7874(Top 604%)
35K21.75 mi0.75 mi23741+679638+239638+2322401(Top 79%)9238(Top 76%)9238(Top 709%)
23M23.00 mi1.25 mi23651+909603+359603+3522348(Top 79%)9255(Top 76%)9255(Top 710%)
24M24.00 mi1.00 mi23581+709594+99594+921960(Top 77%)9116(Top 75%)9116(Top 700%)
40K24.85 mi0.85 mi23490+919554+409554+4021141(Top 74%)8741(Top 71%)8741(Top 671%)
25.2M25.20 mi0.35 mi23416+749523+319523+3120035(Top 71%)8196(Top 67%)8196(Top 629%)
Finish26.22 mi1.02 mi23377+399517+69517+621636(Top 76%)8983(Top 73%)8983(Top 689%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21story building
+97ft-345ft

Overall

24953

Females

10187

F50-54

10187

5K→10K

3.1 - 6.2 mi

Top 89%
×5story building
+79ft-138ft

Overall

25293

Females

10395

F50-54

10395

10K→15K

6.2 - 9.3 mi

Top 88%
×3story building
+67ft-78ft

Overall

24953

Females

10187

F50-54

10187

15K→20K

9.3 - 12.4 mi

Top 85%
×5story building
+106ft-86ft

Overall

24042

Females

9731

F50-54

9731

20K→Half

12.4 - 13.1 mi

Top 86%
×2story building
+19ft-37ft

Overall

24436

Females

9957

F50-54

9957

Half→25K

13.1 - 15.5 mi

Top 81%
×4story building
+66ft-88ft

Overall

23009

Females

9198

F50-54

9198

25K→30K

15.5 - 18.6 mi

Top 78%
×9story building
+181ft-148ft

Overall

22259

Females

8911

F50-54

8911

30K→20M

18.6 - 20.0 mi

Top 76%
×5story building
+64ft-50ft

Overall

21705

Females

8741

F50-54

8741

20M→21M

20.0 - 21.0 mi

Top 70%
×8story building
+106ft-24ft

Overall

19926

Females

7874

F50-54

7874

21M→35K

21.0 - 21.8 mi

Top 79%
×7story building
+17ft-86ft

Overall

22401

Females

9238

F50-54

9238

35K→23M

21.8 - 23.0 mi

Top 79%
×5story building
+23ft-63ft

Overall

22348

Females

9255

F50-54

9255

23M→24M

23.0 - 24.0 mi

Top 77%
×6story building
+12ft-82ft

Overall

21960

Females

9116

F50-54

9116

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

21141

Females

8741

F50-54

8741

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

20035

Females

8196

F50-54

8196

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2story building
+22ft-21ft

Overall

21636

Females

8983

F50-54

8983

Passing Analysis

Category:
Athletes Passed
2393
Passed By
344
Net Change
+2049
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25426
5K → 10K232146+86#25426#25340
10K → 15K21473+141#25340#25199
15K → 20K32416+308#25199#24891
20K → Half5413+41#24891#24850
Half → 25K2747+267#24850#24583
25K → 30K39511+384#24583#24199
30K → 20M1896+183#24199#24016
20M → 21M2091+208#24016#23808
21M → 35K714+67#23808#23741
35K → 23M10919+90#23741#23651
23M → 24M8919+70#23651#23581
24M → 40K998+91#23581#23490
40K → 25.2M751+74#23490#23416
25.2M → Finish5920+39#23416#23377
TOTALS2393344+2049
📊

Passing Visuals

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