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BOSTON MARATHON 2025

Rebecca Johnson

CA

Bib: 17721 F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 37%
Gender (Female)
#0 / 12228
Top 20%
Division (F18-39)
#0 / 5469
Top 36%
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
7:18/mi
22:42
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:20/mi
45:29
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:25/mi
1:08:33
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:36/mi
1:32:09
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:33/mi
1:37:18
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:38/mi
1:55:49
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:01/mi
2:20:44
↑ 181↓ 1480.2%
138 ft elev
20M
8:05/mi
2:31:43
↑ 64↓ 500.2%
148 ft elev
21M
8:32/mi
2:40:15
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:37/mi
2:45:57
↑ 17↓ 861.7%
156 ft elev
23M
8:01/mi
2:55:59
↑ 23↓ 630.6%
116 ft elev
24M
7:51/mi
3:03:50
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:03/mi
3:10:43
↓ 200.3%
20 ft elev
25.2M
7:49/mi
3:13:25
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:49/mi
3:21:23
↑ 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
1:37:187:25 /mi⚡ faster
2nd Half
1:44:057:56 /mi+7.0%
Positive split — 7.0% 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
22:427:183.11 mi22:42
7:18
-
10K
45:297:193.10 mi22:47
7:20
+0:02
15K
1:08:337:213.11 mi23:04
7:25
+0:05
20K
1:32:097:253.11 mi23:36
7:36
+0:11
Half(13.11 mi)
1:37:187:250.68 mi5:09
7:33
-0:03
25K
1:55:497:272.42 mi18:31
7:38
+0:05
30K
2:20:447:333.11 mi24:55
8:01
+0:23
20M
2:31:437:351.36 mi10:59
8:05
+0:04
21M
2:40:157:381.00 mi8:32
8:32
+0:27
35K
2:45:577:380.75 mi5:42
7:37
-0:55
23M
2:55:597:391.25 mi10:02
8:01
+0:24
24M
3:03:507:401.00 mi7:51
7:51
-0:10
40K
3:10:437:400.85 mi6:53
8:03
+0:12
25.2M
3:13:257:410.35 mi2:42
7:49
-0:14
Finish(26.22 mi)
3:21:237:411.02 mi7:58
7:49
0:00
Trend:
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoints & Pacing

Pace Line

Fastest Pace

7:18 /mi

Average Pace

7:41 /mi

Slowest Pace

8:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:54:59

87% of race

Time at Steady Pace

26:24

13% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:41 /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. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi10440201120111111324272427
10K3.10 mi10512-722060-492060-491061721192119
15K3.11 mi10665-1532166-1062166-1061111324272427
20K3.11 mi10889-2242283-1172283-1171158627772777
Half(13.11 mi)0.68 mi10954-652320-372320-371214930103010
25K2.42 mi10946+82361-412361-411104426092609
30K3.11 mi11024-782483-1222483-1221153930543054
20M1.36 mi10967+572495-122495-121098829292929
21M1.00 mi10920+472507-122507-121071329612961
35K0.75 mi10842+782493+142493+14951223672367
23M1.25 mi10748+942487+62487+61014428112811
24M1.00 mi10697+512497-102497-101021129062906
40K0.85 mi10663+342503-62503-61057732013201
25.2M0.35 mi10522+1412443+602443+604898865865
Finish(26.22 mi)1.02 mi10559-372503-602503-601162537783778

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21story building
+97ft-345ft

Overall

11113

Females

2427

F18-39

2427

5K→10K

3.1 - 6.2 mi

Top 37%
×5story building
+79ft-138ft

Overall

10617

Females

2119

F18-39

2119

10K→15K

6.2 - 9.3 mi

Top 39%
×3story building
+67ft-78ft

Overall

11113

Females

2427

F18-39

2427

15K→20K

9.3 - 12.4 mi

Top 41%
×5story building
+106ft-86ft

Overall

11586

Females

2777

F18-39

2777

20K→Half

12.4 - 13.1 mi

Top 43%
×2story building
+19ft-37ft

Overall

12149

Females

3010

F18-39

3010

Half→25K

13.1 - 15.5 mi

Top 39%
×4story building
+66ft-88ft

Overall

11044

Females

2609

F18-39

2609

25K→30K

15.5 - 18.6 mi

Top 41%
×9story building
+181ft-148ft

Overall

11539

Females

3054

F18-39

3054

30K→20M

18.6 - 20.0 mi

Top 39%
×5story building
+64ft-50ft

Overall

10988

Females

2929

F18-39

2929

20M→21M

20.0 - 21.0 mi

Top 38%
×8story building
+106ft-24ft

Overall

10713

Females

2961

F18-39

2961

21M→35K

21.0 - 21.8 mi

Top 33%
×7story building
+17ft-86ft

Overall

9512

Females

2367

F18-39

2367

35K→23M

21.8 - 23.0 mi

Top 36%
×5story building
+23ft-63ft

Overall

10144

Females

2811

F18-39

2811

23M→24M

23.0 - 24.0 mi

Top 36%
×6story building
+12ft-82ft

Overall

10211

Females

2906

F18-39

2906

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

10577

Females

3201

F18-39

3201

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4898

Females

865

F18-39

865

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2story building
+22ft-21ft

Overall

11625

Females

3778

F18-39

3778

Passing Analysis

Category:
Passed
1745
Passed By
1864
Net Change
-119
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10440
5K → 10K230302-72#10440#10512
10K → 15K117270-153#10512#10665
15K → 20K112336-224#10665#10889
20K → Half2085-65#10889#10954
Half → 25K168160+8#10954#10946
25K → 30K212290-78#10946#11024
30K → 20M13578+57#11024#10967
20M → 21M12275+47#10967#10920
21M → 35K9517+78#10920#10842
35K → 23M14955+94#10842#10748
23M → 24M9342+51#10748#10697
24M → 40K8955+34#10697#10663
40K → 25.2M1410+141#10663#10522
25.2M → Finish6299-37#10522#10559
TOTALS17451864-119

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