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BOSTON MARATHON 2025

Leah Jamieson

Bib: 13750•F

ON

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 33%
Gender (Female)
#0 / 12228
Top 16%
Division (F18-39)
#0 / 5469
Top 29%
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
7:15/mi
22:33
↑ 97↓ 3451.5%
10K· 6.21 mi
7:19/mi
45:18
↑ 79↓ 1380.4%
15K· 9.32 mi
7:23/mi
1:08:15
↑ 67↓ 78
20K· 12.43 mi
7:32/mi
1:31:38
↑ 106↓ 860.1%
Half· 13.11 mi
7:26/mi
1:36:42
↑ 19↓ 370.5%
25K· 15.53 mi
7:32/mi
1:54:58
↑ 66↓ 880.2%
30K· 18.64 mi
7:47/mi
2:19:09
↑ 181↓ 1480.2%
20M
7:44/mi
2:29:40
↑ 64↓ 500.2%
21M
8:10/mi
2:37:50
↑ 106↓ 241.6%
35K· 21.75 mi
7:38/mi
2:43:33
↑ 17↓ 861.7%
23M
7:46/mi
2:53:17
↑ 23↓ 630.6%
24M
7:41/mi
3:00:58
↓ 821.3%
40K· 24.85 mi
7:34/mi
3:07:26
↓ 200.3%
25.2M
8:25/mi
3:10:20
↑ 13↓ 160.2%
Finish· 26.22 mi
7:18/mi
3:17:46
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:42
Pace7:23 /mi
2nd Half
Distance13.11 mi
Time1:41:04
Pace7:43 /mi
📊Positive Split: 4.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:5422:337:1522:33
7:15
-
10K
6.21 mi11:14:3945:187:1722:45
7:19
+0:04
15K
9.32 mi11:37:361:08:157:1922:57
7:23
+0:04
20K
12.43 mi12:00:591:31:387:2223:23
7:32
+0:09
Half
13.11 mi12:06:031:36:427:235:04
7:26
-0:06
25K
15.53 mi12:24:191:54:587:2418:16
7:32
+0:06
30K
18.64 mi12:48:302:19:097:2824:11
7:47
+0:15
20M
20.00 mi12:59:012:29:407:2910:31
7:44
-0:03
21M
21.00 mi13:07:112:37:507:318:10
8:10
+0:26
35K
21.75 mi13:12:542:43:337:315:43
7:38
-0:32
23M
23.00 mi13:22:382:53:177:329:44
7:46
+0:08
24M
24.00 mi13:30:193:00:587:327:41
7:41
-0:05
40K
24.85 mi13:36:473:07:267:326:28
7:34
-0:07
25.2M
25.20 mi13:39:413:10:207:332:54
8:25
+0:51
Finish
26.22 mi13:47:073:17:467:337:26
7:18
-1:07

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

7:15 /mi

Average Pace

7:33 /mi

Slowest Pace

8:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:06:42

94% of race

Time at Steady Pace

11:04

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:33 /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 mi10:51:5422:337:1522:33
7:15
#9982
10K
6.21 mi11:14:3945:187:1722:45
7:19
#10267
15K
9.32 mi11:37:361:08:157:1922:57
7:23
#10415
20K
12.43 mi12:00:591:31:387:2223:23
7:32
#10528
Half
13.11 mi12:06:031:36:427:235:04
7:26
#10539
25K
15.53 mi12:24:191:54:587:2418:16
7:32
#10461
30K
18.64 mi12:48:302:19:097:2824:11
7:47
#10268
20M
20.00 mi12:59:012:29:407:2910:31
7:44
#10084
21M
21.00 mi13:07:112:37:507:318:10
8:10
#9948
35K
21.75 mi13:12:542:43:337:315:43
7:38
#9922
23M
23.00 mi13:22:382:53:177:329:44
7:46
#9788
24M
24.00 mi13:30:193:00:587:327:41
7:41
#9727
40K
24.85 mi13:36:473:07:267:326:28
7:34
#9589
25.2M
25.20 mi13:39:413:10:207:332:54
8:25
#9544
Finish
26.22 mi13:47:073:17:467:337:26
7:18
#9441
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi99821798179810760(Top 38%)2247(Top 18%)2247(Top 41%)
10K6.21 mi3.10 mi10267-2851939-1411939-14110541(Top 37%)2078(Top 17%)2078(Top 38%)
15K9.32 mi3.11 mi10415-1482038-992038-9910760(Top 38%)2247(Top 18%)2247(Top 41%)
20K12.43 mi3.11 mi10528-1132113-752113-7510997(Top 39%)2469(Top 20%)2469(Top 45%)
Half13.11 mi0.68 mi10539-112117-42117-411134(Top 39%)2475(Top 20%)2475(Top 45%)
25K15.53 mi2.42 mi10461+782114+32114+310255(Top 36%)2210(Top 18%)2210(Top 40%)
30K18.64 mi3.11 mi10268+1932083+312083+319820(Top 35%)2201(Top 18%)2201(Top 40%)
20M20.00 mi1.36 mi10084+1842025+582025+588654(Top 30%)1817(Top 15%)1817(Top 33%)
21M21.00 mi1.00 mi9948+1362002+232002+238406(Top 30%)1902(Top 16%)1902(Top 35%)
35K21.75 mi0.75 mi9922+262020-182020-189657(Top 34%)2432(Top 20%)2432(Top 44%)
23M23.00 mi1.25 mi9788+1342001+192001+198425(Top 30%)2003(Top 16%)2003(Top 37%)
24M24.00 mi1.00 mi9727+612008-72008-79032(Top 32%)2340(Top 19%)2340(Top 43%)
40K24.85 mi0.85 mi9589+1381978+301978+307221(Top 25%)1651(Top 14%)1651(Top 30%)
25.2M25.20 mi0.35 mi9544+451969+91969+98314(Top 29%)2194(Top 18%)2194(Top 40%)
Finish26.22 mi1.02 mi9441+1031961+81961+87767(Top 27%)1965(Top 16%)1965(Top 36%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21story building
+97ft-345ft

Overall

10760

Females

2247

F18-39

2247

5K→10K

3.1 - 6.2 mi

Top 37%
×5story building
+79ft-138ft

Overall

10541

Females

2078

F18-39

2078

10K→15K

6.2 - 9.3 mi

Top 38%
×3story building
+67ft-78ft

Overall

10760

Females

2247

F18-39

2247

15K→20K

9.3 - 12.4 mi

Top 39%
×5story building
+106ft-86ft

Overall

10997

Females

2469

F18-39

2469

20K→Half

12.4 - 13.1 mi

Top 39%
×2story building
+19ft-37ft

Overall

11134

Females

2475

F18-39

2475

Half→25K

13.1 - 15.5 mi

Top 36%
×4story building
+66ft-88ft

Overall

10255

Females

2210

F18-39

2210

25K→30K

15.5 - 18.6 mi

Top 35%
×9story building
+181ft-148ft

Overall

9820

Females

2201

F18-39

2201

30K→20M

18.6 - 20.0 mi

Top 30%
×5story building
+64ft-50ft

Overall

8654

Females

1817

F18-39

1817

20M→21M

20.0 - 21.0 mi

Top 30%
×8story building
+106ft-24ft

Overall

8406

Females

1902

F18-39

1902

21M→35K

21.0 - 21.8 mi

Top 34%
×7story building
+17ft-86ft

Overall

9657

Females

2432

F18-39

2432

35K→23M

21.8 - 23.0 mi

Top 30%
×5story building
+23ft-63ft

Overall

8425

Females

2003

F18-39

2003

23M→24M

23.0 - 24.0 mi

Top 32%
×6story building
+12ft-82ft

Overall

9032

Females

2340

F18-39

2340

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

7221

Females

1651

F18-39

1651

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1story
+13ft-16ft

Overall

8314

Females

2194

F18-39

2194

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2story building
+22ft-21ft

Overall

7767

Females

1965

F18-39

1965

Passing Analysis

Category:
Athletes Passed
2021
Passed By
1475
Net Change
+541
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9982
5K → 10K122405-285#9982#10267
10K → 15K119267-148#10267#10415
15K → 20K142254-113#10415#10528
20K → Half3344-11#10528#10539
Half → 25K192114+78#10539#10461
25K → 30K315121+193#10461#10268
30K → 20M21733+184#10268#10084
20M → 21M18448+136#10084#9948
21M → 35K7750+26#9948#9922
35K → 23M17137+134#9922#9788
23M → 24M11150+61#9788#9727
24M → 40K15113+138#9727#9589
40K → 25.2M516+45#9589#9544
25.2M → Finish13633+103#9544#9441
TOTALS20211475+541
📊

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