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BOSTON MARATHON 2025

Grace Jacobson

Bib: 15022•F

KS

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 34%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:04
Rank: #14343
Start → 5K
24:04 | 7:45/mi
10K· 6.21 mi
48:04
Rank: #14200 (+143)
5K → 10K
24:00 | 7:43/mi
15K· 9.32 mi
1:11:56
Rank: #13904 (+296)
10K → 15K
23:52 | 7:41/mi
20K· 12.43 mi
1:36:07
Rank: #13658 (+246)
15K → 20K
24:11 | 7:47/mi
Half· 13.11 mi
1:41:16
Rank: #13570 (+88)
20K → Half
5:09 | 7:33/mi
25K· 15.53 mi
1:59:52
Rank: #13156 (+414)
Half → 25K
18:36 | 7:40/mi
30K· 18.64 mi
2:24:39
Rank: #12735 (+421)
25K → 30K
24:47 | 7:59/mi
20M
2:35:26
Rank: #12485 (+250)
30K → 20M
10:47 | 7:56/mi
21M
2:43:16
Rank: #12095 (+390)
20M → 21M
7:50 | 7:50/mi
35K· 21.75 mi
2:48:54
Rank: #11938 (+157)
21M → 35K
5:38 | 7:32/mi
23M
2:58:19
Rank: #11582 (+356)
35K → 23M
9:25 | 7:31/mi
24M
3:05:27
Rank: #11220 (+362)
23M → 24M
7:08 | 7:08/mi
40K· 24.85 mi
3:11:35
Rank: #10919 (+301)
24M → 40K
6:08 | 7:10/mi
25.2M
3:14:12
Rank: #10788 (+131)
40K → 25.2M
2:37 | 7:35/mi
Finish· 26.22 mi
3:20:55
Rank: #10413 (+375)
25.2M → Finish
6:43 | 6:35/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:41:16
Pace7:43 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:39:39
Pace7:36 /mi
📊Negative Split: 1.6% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:56:5224:047:4524:04
7:45
-
10K
6.21 mi11:20:5248:047:4424:00
7:43
-0:02
15K
9.32 mi11:44:441:11:567:4323:52
7:41
-0:02
20K
12.43 mi12:08:551:36:077:4424:11
7:47
+0:06
Half
13.11 mi12:14:041:41:167:435:09
7:33
-0:14
25K
15.53 mi12:32:401:59:527:4318:36
7:40
+0:07
30K
18.64 mi12:57:272:24:397:4624:47
7:59
+0:19
20M
20.00 mi13:08:142:35:267:4610:47
7:56
-0:03
21M
21.00 mi13:16:042:43:167:467:50
7:50
-0:06
35K
21.75 mi13:21:422:48:547:465:38
7:32
-0:18
23M
23.00 mi13:31:072:58:197:459:25
7:31
-0:01
24M
24.00 mi13:38:153:05:277:447:08
7:08
-0:23
40K
24.85 mi13:44:233:11:357:426:08
7:10
+0:02
25.2M
25.20 mi13:47:003:14:127:422:37
7:35
+0:25
Finish
26.22 mi13:53:433:20:557:406:43
6:35
-1:00

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

6:35 /mi

Average Pace

7:40 /mi

Slowest Pace

7:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

19:59

10% of race

Time at Steady Pace

2:25:22

72% of race

Time at Slower Pace

35:34

18% of race

Average Pace: 7:40 /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 mi10:56:5224:047:4524:04
7:45
#14343
10K
6.21 mi11:20:5248:047:4424:00
7:43
#14200
15K
9.32 mi11:44:441:11:567:4323:52
7:41
#13904
20K
12.43 mi12:08:551:36:077:4424:11
7:47
#13658
Half
13.11 mi12:14:041:41:167:435:09
7:33
#13570
25K
15.53 mi12:32:401:59:527:4318:36
7:40
#13156
30K
18.64 mi12:57:272:24:397:4624:47
7:59
#12735
20M
20.00 mi13:08:142:35:267:4610:47
7:56
#12485
21M
21.00 mi13:16:042:43:167:467:50
7:50
#12095
35K
21.75 mi13:21:422:48:547:465:38
7:32
#11938
23M
23.00 mi13:31:072:58:197:459:25
7:31
#11582
24M
24.00 mi13:38:153:05:277:447:08
7:08
#11220
40K
24.85 mi13:44:233:11:357:426:08
7:10
#10919
25.2M
25.20 mi13:47:003:14:127:422:37
7:35
#10788
Finish
26.22 mi13:53:433:20:557:406:43
6:35
#10413
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi143434118411813322(Top 47%)3632(Top 30%)3632(Top 66%)
10K6.21 mi3.10 mi14200+1434053+654053+6514113(Top 50%)4017(Top 33%)4017(Top 73%)
15K9.32 mi3.11 mi13904+2963910+1433910+14313322(Top 47%)3632(Top 30%)3632(Top 66%)
20K12.43 mi3.11 mi13658+2463813+973813+9713136(Top 46%)3611(Top 30%)3611(Top 66%)
Half13.11 mi0.68 mi13570+883769+443769+4412141(Top 43%)3002(Top 25%)3002(Top 55%)
25K15.53 mi2.42 mi13156+4143563+2063563+20611322(Top 40%)2750(Top 22%)2750(Top 50%)
30K18.64 mi3.11 mi12735+4213386+1773386+17711223(Top 40%)2894(Top 24%)2894(Top 53%)
20M20.00 mi1.36 mi12485+2503296+903296+9010030(Top 35%)2446(Top 20%)2446(Top 45%)
21M21.00 mi1.00 mi12095+3903123+1733123+1736432(Top 23%)1085(Top 9%)1085(Top 20%)
35K21.75 mi0.75 mi11938+1573057+663057+668885(Top 31%)2079(Top 17%)2079(Top 38%)
23M23.00 mi1.25 mi11582+3562922+1352922+1356779(Top 24%)1313(Top 11%)1313(Top 24%)
24M24.00 mi1.00 mi11220+3622770+1522770+1525457(Top 19%)882(Top 7%)882(Top 16%)
40K24.85 mi0.85 mi10919+3012650+1202650+1204961(Top 17%)775(Top 6%)775(Top 14%)
25.2M25.20 mi0.35 mi10788+1312591+592591+593932(Top 14%)566(Top 5%)566(Top 10%)
Finish26.22 mi1.02 mi10413+3752422+1692422+1693336(Top 12%)403(Top 3%)403(Top 7%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21stories
+97ft-345ft

Overall

13322

Females

3632

F18-39

3632

5K→10K

3.1 - 6.2 mi

Top 50%
×5stories
+79ft-138ft

Overall

14113

Females

4017

F18-39

4017

10K→15K

6.2 - 9.3 mi

Top 47%
×3stories
+67ft-78ft

Overall

13322

Females

3632

F18-39

3632

15K→20K

9.3 - 12.4 mi

Top 46%
×5stories
+106ft-86ft

Overall

13136

Females

3611

F18-39

3611

20K→Half

12.4 - 13.1 mi

Top 43%
×2stories
+19ft-37ft

Overall

12141

Females

3002

F18-39

3002

Half→25K

13.1 - 15.5 mi

Top 40%
×4stories
+66ft-88ft

Overall

11322

Females

2750

F18-39

2750

25K→30K

15.5 - 18.6 mi

Top 40%
×9stories
+181ft-148ft

Overall

11223

Females

2894

F18-39

2894

30K→20M

18.6 - 20.0 mi

Top 35%
×5stories
+64ft-50ft

Overall

10030

Females

2446

F18-39

2446

20M→21M

20.0 - 21.0 mi

Top 23%
×8stories
+106ft-24ft

Overall

6432

Females

1085

F18-39

1085

21M→35K

21.0 - 21.8 mi

Top 31%
×7stories
+17ft-86ft

Overall

8885

Females

2079

F18-39

2079

35K→23M

21.8 - 23.0 mi

Top 24%
×5stories
+23ft-63ft

Overall

6779

Females

1313

F18-39

1313

23M→24M

23.0 - 24.0 mi

Top 19%
×6stories
+12ft-82ft

Overall

5457

Females

882

F18-39

882

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4961

Females

775

F18-39

775

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3932

Females

566

F18-39

566

25.2M→Finish

25.2 - 26.2 mi

Top 12%
×2stories
+22ft-21ft

Overall

3336

Females

403

F18-39

403

Passing Analysis

Category:
Athletes Passed
4390
Passed By
460
Net Change
+3930
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14343
5K → 10K360217+143#14343#14200
10K → 15K36165+296#14200#13904
15K → 20K33589+246#13904#13658
20K → Half957+88#13658#13570
Half → 25K4217+414#13570#13156
25K → 30K47352+421#13156#12735
30K → 20M26010+250#12735#12485
20M → 21M3933+390#12485#12095
21M → 35K1614+157#12095#11938
35K → 23M3604+356#11938#11582
23M → 24M3631+362#11582#11220
24M → 40K3010+301#11220#10919
40K → 25.2M1310+131#10919#10788
25.2M → Finish3761+375#10788#10413
TOTALS4390460+3930
📊

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