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BOSTON MARATHON 2025

Isabel Perry

Bib: 15179•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 26%
Gender (Female)
#0 / 12228
Top 9%
Division (F18-39)
#0 / 5469
Top 17%
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
7:09/mi
22:14
↑ 97↓ 3451.5%
10K· 6.21 mi
7:02/mi
44:05
↑ 79↓ 1380.4%
15K· 9.32 mi
7:01/mi
1:05:53
↑ 67↓ 78
20K· 12.43 mi
7:10/mi
1:28:09
↑ 106↓ 860.1%
Half· 13.11 mi
7:07/mi
1:33:00
↑ 19↓ 370.5%
25K· 15.53 mi
7:11/mi
1:50:25
↑ 66↓ 880.2%
30K· 18.64 mi
7:27/mi
2:13:33
↑ 181↓ 1480.2%
20M
7:35/mi
2:23:51
↑ 64↓ 500.2%
21M
7:54/mi
2:31:45
↑ 106↓ 241.6%
35K· 21.75 mi
7:08/mi
2:37:05
↑ 17↓ 861.7%
23M
7:30/mi
2:46:28
↑ 23↓ 630.6%
24M
7:24/mi
2:53:52
↓ 821.3%
40K· 24.85 mi
7:38/mi
3:00:24
↓ 200.3%
25.2M
8:25/mi
3:03:18
↑ 13↓ 160.2%
Finish· 26.22 mi
7:21/mi
3:10:47
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:00
Pace7:06 /mi
2nd Half
Distance13.11 mi
Time1:37:47
Pace7:28 /mi
📊Positive Split: 5.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:1422:147:0922:14
7:09
-
10K
6.21 mi11:16:0544:057:0621:51
7:02
-0:07
15K
9.32 mi11:37:531:05:537:0421:48
7:01
-0:01
20K
12.43 mi12:00:091:28:097:0622:16
7:10
+0:09
Half
13.11 mi12:05:001:33:007:064:51
7:07
-0:03
25K
15.53 mi12:22:251:50:257:0617:25
7:11
+0:04
30K
18.64 mi12:45:332:13:337:1023:08
7:27
+0:16
20M
20.00 mi12:55:512:23:517:1210:18
7:35
+0:08
21M
21.00 mi13:03:452:31:457:147:54
7:54
+0:19
35K
21.75 mi13:09:052:37:057:135:20
7:08
-0:46
23M
23.00 mi13:18:282:46:287:149:23
7:30
+0:22
24M
24.00 mi13:25:522:53:527:157:24
7:24
-0:06
40K
24.85 mi13:32:243:00:247:156:32
7:38
+0:14
25.2M
25.20 mi13:35:183:03:187:162:54
8:25
+0:47
Finish
26.22 mi13:42:473:10:477:177:29
7:21
-1:04

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

7:01 /mi

Average Pace

7:17 /mi

Slowest Pace

8:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:59:59

94% of race

Time at Steady Pace

7:54

4% of race

Time at Slower Pace

2:54

2% of race

Average Pace: 7:17 /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 mi10:54:1422:147:0922:14
7:09
#9117
10K
6.21 mi11:16:0544:057:0621:51
7:02
#8609
15K
9.32 mi11:37:531:05:537:0421:48
7:01
#8267
20K
12.43 mi12:00:091:28:097:0622:16
7:10
#8137
Half
13.11 mi12:05:001:33:007:064:51
7:07
#8129
25K
15.53 mi12:22:251:50:257:0617:25
7:11
#7971
30K
18.64 mi12:45:332:13:337:1023:08
7:27
#7786
20M
20.00 mi12:55:512:23:517:1210:18
7:35
#7692
21M
21.00 mi13:03:452:31:457:147:54
7:54
#7569
35K
21.75 mi13:09:052:37:057:135:20
7:08
#7470
23M
23.00 mi13:18:282:46:287:149:23
7:30
#7372
24M
24.00 mi13:25:522:53:527:157:24
7:24
#7314
40K
24.85 mi13:32:243:00:247:156:32
7:38
#7286
25.2M
25.20 mi13:35:183:03:187:162:54
8:25
#7278
Finish
26.22 mi13:42:473:10:477:177:29
7:21
#7269
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi9117141314137744(Top 27%)953(Top 8%)953(Top 17%)
10K6.21 mi3.10 mi8609+5081226+1871226+1878177(Top 29%)1067(Top 9%)1067(Top 20%)
15K9.32 mi3.11 mi8267+3421106+1201106+1207744(Top 27%)953(Top 8%)953(Top 17%)
20K12.43 mi3.11 mi8137+1301073+331073+337956(Top 28%)1090(Top 9%)1090(Top 20%)
Half13.11 mi0.68 mi8129+81077-41077-48395(Top 30%)1233(Top 10%)1233(Top 23%)
25K15.53 mi2.42 mi7971+1581042+351042+357502(Top 26%)1037(Top 8%)1037(Top 19%)
30K18.64 mi3.11 mi7786+1851022+201022+207363(Top 26%)1148(Top 9%)1148(Top 21%)
20M20.00 mi1.36 mi7692+941020+21020+27553(Top 27%)1354(Top 11%)1354(Top 25%)
21M21.00 mi1.00 mi7569+1231022-21022-26809(Top 24%)1224(Top 10%)1224(Top 22%)
35K21.75 mi0.75 mi7470+991011+111011+116195(Top 22%)985(Top 8%)985(Top 18%)
23M23.00 mi1.25 mi7372+981014-31014-36607(Top 23%)1228(Top 10%)1228(Top 22%)
24M24.00 mi1.00 mi7314+581028-141028-147061(Top 25%)1475(Top 12%)1475(Top 27%)
40K24.85 mi0.85 mi7286+281043-151043-157720(Top 27%)1846(Top 15%)1846(Top 34%)
25.2M25.20 mi0.35 mi7278+81052-91052-98282(Top 29%)2162(Top 18%)2162(Top 40%)
Finish26.22 mi1.02 mi7269+91077-251077-258089(Top 28%)2097(Top 17%)2097(Top 38%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 27%
×21story building
+97ft-345ft

Overall

7744

Females

953

F18-39

953

5K→10K

3.1 - 6.2 mi

Top 29%
×5story building
+79ft-138ft

Overall

8177

Females

1067

F18-39

1067

10K→15K

6.2 - 9.3 mi

Top 27%
×3story building
+67ft-78ft

Overall

7744

Females

953

F18-39

953

15K→20K

9.3 - 12.4 mi

Top 28%
×5story building
+106ft-86ft

Overall

7956

Females

1090

F18-39

1090

20K→Half

12.4 - 13.1 mi

Top 30%
×2story building
+19ft-37ft

Overall

8395

Females

1233

F18-39

1233

Half→25K

13.1 - 15.5 mi

Top 26%
×4story building
+66ft-88ft

Overall

7502

Females

1037

F18-39

1037

25K→30K

15.5 - 18.6 mi

Top 26%
×9story building
+181ft-148ft

Overall

7363

Females

1148

F18-39

1148

30K→20M

18.6 - 20.0 mi

Top 27%
×5story building
+64ft-50ft

Overall

7553

Females

1354

F18-39

1354

20M→21M

20.0 - 21.0 mi

Top 24%
×8story building
+106ft-24ft

Overall

6809

Females

1224

F18-39

1224

21M→35K

21.0 - 21.8 mi

Top 22%
×7story building
+17ft-86ft

Overall

6195

Females

985

F18-39

985

35K→23M

21.8 - 23.0 mi

Top 23%
×5story building
+23ft-63ft

Overall

6607

Females

1228

F18-39

1228

23M→24M

23.0 - 24.0 mi

Top 25%
×6story building
+12ft-82ft

Overall

7061

Females

1475

F18-39

1475

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7720

Females

1846

F18-39

1846

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1story
+13ft-16ft

Overall

8282

Females

2162

F18-39

2162

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2story building
+22ft-21ft

Overall

8089

Females

2097

F18-39

2097

Passing Analysis

Category:
Athletes Passed
2459
Passed By
611
Net Change
+1848
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9117
5K → 10K55648+508#9117#8609
10K → 15K36725+342#8609#8267
15K → 20K21484+130#8267#8137
20K → Half2921+8#8137#8129
Half → 25K20951+158#8129#7971
25K → 30K27792+185#7971#7786
30K → 20M13440+94#7786#7692
20M → 21M15734+123#7692#7569
21M → 35K11112+99#7569#7470
35K → 23M13840+98#7470#7372
23M → 24M9941+58#7372#7314
24M → 40K7143+28#7314#7286
40K → 25.2M3628+8#7286#7278
25.2M → Finish6152+9#7278#7269
TOTALS2459611+1848
📊

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