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BOSTON MARATHON 2025

Isabella Butler

Bib: 12411•F

OH

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 46%
Division (F18-39)
#0 / 5469
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
7:59/mi
24:49
↑ 97↓ 3451.5%
10K· 6.21 mi
8:29/mi
51:09
↑ 79↓ 1380.4%
15K· 9.32 mi
8:11/mi
1:16:35
↑ 67↓ 78
20K· 12.43 mi
8:16/mi
1:42:17
↑ 106↓ 860.1%
Half· 13.11 mi
8:21/mi
1:47:59
↑ 19↓ 370.5%
25K· 15.53 mi
8:30/mi
2:08:35
↑ 66↓ 880.2%
30K· 18.64 mi
8:58/mi
2:36:28
↑ 181↓ 1480.2%
20M
8:34/mi
2:48:07
↑ 64↓ 500.2%
21M
9:00/mi
2:57:07
↑ 106↓ 241.6%
35K· 21.75 mi
9:36/mi
3:04:18
↑ 17↓ 861.7%
23M
8:27/mi
3:14:53
↑ 23↓ 630.6%
24M
8:18/mi
3:23:11
↓ 821.3%
40K· 24.85 mi
8:30/mi
3:30:27
↓ 200.3%
25.2M
9:05/mi
3:33:35
↑ 13↓ 160.2%
Finish· 26.22 mi
7:50/mi
3:41:34
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:59
Pace8:14 /mi
2nd Half
Distance13.11 mi
Time1:53:35
Pace8:40 /mi
📊Positive Split: 5.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:57:0724:497:5924:49
7:59
-
10K
6.21 mi11:23:2751:098:1426:20
8:29
+0:30
15K
9.32 mi11:48:531:16:358:1325:26
8:11
-0:18
20K
12.43 mi12:14:351:42:178:1425:42
8:16
+0:05
Half
13.11 mi12:20:171:47:598:145:42
8:21
+0:05
25K
15.53 mi12:40:532:08:358:1720:36
8:30
+0:09
30K
18.64 mi13:08:462:36:288:2427:53
8:58
+0:28
20M
20.00 mi13:20:252:48:078:2411:39
8:34
-0:24
21M
21.00 mi13:29:252:57:078:269:00
9:00
+0:26
35K
21.75 mi13:36:363:04:188:287:11
9:36
+0:36
23M
23.00 mi13:47:113:14:538:2810:35
8:27
-1:09
24M
24.00 mi13:55:293:23:118:288:18
8:18
-0:09
40K
24.85 mi14:02:453:30:278:287:16
8:30
+0:12
25.2M
25.20 mi14:05:533:33:358:293:08
9:05
+0:35
Finish
26.22 mi14:13:523:41:348:277:59
7:50
-1:15

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

7:50 /mi

Average Pace

8:27 /mi

Slowest Pace

9:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

58:14

26% of race

Time at Steady Pace

1:56:08

52% of race

Time at Slower Pace

47:12

21% of race

Average Pace: 8:27 /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 mi10:57:0724:497:5924:49
7:59
#16498
10K
6.21 mi11:23:2751:098:1426:20
8:29
#18193
15K
9.32 mi11:48:531:16:358:1325:26
8:11
#17866
20K
12.43 mi12:14:351:42:178:1425:42
8:16
#17549
Half
13.11 mi12:20:171:47:598:145:42
8:21
#17593
25K
15.53 mi12:40:532:08:358:1720:36
8:30
#17465
30K
18.64 mi13:08:462:36:288:2427:53
8:58
#17426
20M
20.00 mi13:20:252:48:078:2411:39
8:34
#17171
21M
21.00 mi13:29:252:57:078:269:00
9:00
#16913
35K
21.75 mi13:36:363:04:188:287:11
9:36
#17105
23M
23.00 mi13:47:113:14:538:2810:35
8:27
#16835
24M
24.00 mi13:55:293:23:118:288:18
8:18
#16664
40K
24.85 mi14:02:453:30:278:287:16
8:30
#16524
25.2M
25.20 mi14:05:533:33:358:293:08
9:05
#16452
Finish
26.22 mi14:13:523:41:348:277:59
7:50
#16260
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi164985449544917319(Top 61%)5910(Top 48%)5910(Top 108%)
10K6.21 mi3.10 mi18193-16956446-9976446-99719658(Top 69%)7276(Top 60%)7276(Top 133%)
15K9.32 mi3.11 mi17866+3276244+2026244+20217319(Top 61%)5910(Top 48%)5910(Top 108%)
20K12.43 mi3.11 mi17549+3176063+1816063+18116784(Top 59%)5658(Top 46%)5658(Top 103%)
Half13.11 mi0.68 mi17593-446090-276090-2718302(Top 64%)6479(Top 53%)6479(Top 118%)
25K15.53 mi2.42 mi17465+1286038+526038+5217182(Top 60%)5959(Top 49%)5959(Top 109%)
30K18.64 mi3.11 mi17426+396071-336071-3317556(Top 62%)6336(Top 52%)6336(Top 116%)
20M20.00 mi1.36 mi17171+2555944+1275944+12714293(Top 50%)4667(Top 38%)4667(Top 85%)
21M21.00 mi1.00 mi16913+2585818+1265818+12613551(Top 48%)4399(Top 36%)4399(Top 80%)
35K21.75 mi0.75 mi17105-1925967-1495967-14920694(Top 73%)8340(Top 68%)8340(Top 152%)
23M23.00 mi1.25 mi16835+2705834+1335834+13313053(Top 46%)4310(Top 35%)4310(Top 79%)
24M24.00 mi1.00 mi16664+1715752+825752+8213300(Top 47%)4475(Top 37%)4475(Top 82%)
40K24.85 mi0.85 mi16524+1405703+495703+4913472(Top 47%)4699(Top 38%)4699(Top 86%)
25.2M25.20 mi0.35 mi16452+725668+355668+3512409(Top 44%)4208(Top 34%)4208(Top 77%)
Finish26.22 mi1.02 mi16260+1925576+925576+9211728(Top 41%)3819(Top 31%)3819(Top 70%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21story building
+97ft-345ft

Overall

17319

Females

5910

F18-39

5910

5K→10K

3.1 - 6.2 mi

Top 69%
×5story building
+79ft-138ft

Overall

19658

Females

7276

F18-39

7276

10K→15K

6.2 - 9.3 mi

Top 61%
×3story building
+67ft-78ft

Overall

17319

Females

5910

F18-39

5910

15K→20K

9.3 - 12.4 mi

Top 59%
×5story building
+106ft-86ft

Overall

16784

Females

5658

F18-39

5658

20K→Half

12.4 - 13.1 mi

Top 64%
×2story building
+19ft-37ft

Overall

18302

Females

6479

F18-39

6479

Half→25K

13.1 - 15.5 mi

Top 60%
×4story building
+66ft-88ft

Overall

17182

Females

5959

F18-39

5959

25K→30K

15.5 - 18.6 mi

Top 62%
×9story building
+181ft-148ft

Overall

17556

Females

6336

F18-39

6336

30K→20M

18.6 - 20.0 mi

Top 50%
×5story building
+64ft-50ft

Overall

14293

Females

4667

F18-39

4667

20M→21M

20.0 - 21.0 mi

Top 48%
×8story building
+106ft-24ft

Overall

13551

Females

4399

F18-39

4399

21M→35K

21.0 - 21.8 mi

Top 73%
×7story building
+17ft-86ft

Overall

20694

Females

8340

F18-39

8340

35K→23M

21.8 - 23.0 mi

Top 46%
×5story building
+23ft-63ft

Overall

13053

Females

4310

F18-39

4310

23M→24M

23.0 - 24.0 mi

Top 47%
×6story building
+12ft-82ft

Overall

13300

Females

4475

F18-39

4475

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

13472

Females

4699

F18-39

4699

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

12409

Females

4208

F18-39

4208

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2story building
+22ft-21ft

Overall

11728

Females

3819

F18-39

3819

Passing Analysis

Category:
Athletes Passed
2704
Passed By
2466
Net Change
+238
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16498
5K → 10K201715-1695#16498#18193
10K → 15K38356+327#18193#17866
15K → 20K36649+317#17866#17549
20K → Half2569-44#17549#17593
Half → 25K21991+128#17593#17465
25K → 30K237198+39#17465#17426
30K → 20M2627+255#17426#17171
20M → 21M27214+258#17171#16913
21M → 35K25217-192#16913#17105
35K → 23M2788+270#17105#16835
23M → 24M1798+171#16835#16664
24M → 40K15616+140#16664#16524
40K → 25.2M775+72#16524#16452
25.2M → Finish20513+192#16452#16260
TOTALS27042466+238
📊

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