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BOSTON MARATHON 2025

Heidi Langan

Bib: 21388•F

CT

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 47%
Masters (Masters Women)
#0 / 6759
Top 34%
Division (F50-54)
#0 / 1303
Top 27%
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
8:03/mi
25:02
↑ 97↓ 3451.5%
10K· 6.21 mi
8:12/mi
50:31
↑ 79↓ 1380.4%
15K· 9.32 mi
8:13/mi
1:16:02
↑ 67↓ 78
20K· 12.43 mi
8:16/mi
1:41:42
↑ 106↓ 860.1%
Half· 13.11 mi
8:07/mi
1:47:14
↑ 19↓ 370.5%
25K· 15.53 mi
8:23/mi
2:07:33
↑ 66↓ 880.2%
30K· 18.64 mi
8:48/mi
2:34:53
↑ 181↓ 1480.2%
20M
9:10/mi
2:47:20
↑ 64↓ 500.2%
21M
9:39/mi
2:56:59
↑ 106↓ 241.6%
35K· 21.75 mi
8:33/mi
3:03:23
↑ 17↓ 861.7%
23M
9:00/mi
3:14:39
↑ 23↓ 630.6%
24M
8:38/mi
3:23:17
↓ 821.3%
40K· 24.85 mi
8:37/mi
3:30:39
↓ 200.3%
25.2M
9:37/mi
3:33:58
↑ 13↓ 160.2%
Finish· 26.22 mi
8:16/mi
3:42:23
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:14
Pace8:11 /mi
2nd Half
Distance13.11 mi
Time1:55:09
Pace8:47 /mi
📊Positive Split: 7.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:5225:028:0325:02
8:03
-
10K
6.21 mi11:45:2150:318:0825:29
8:12
+0:09
15K
9.32 mi12:10:521:16:028:0925:31
8:13
+0:01
20K
12.43 mi12:36:321:41:428:1125:40
8:16
+0:03
Half
13.11 mi12:42:041:47:148:115:32
8:07
-0:09
25K
15.53 mi13:02:232:07:338:1320:19
8:23
+0:16
30K
18.64 mi13:29:432:34:538:1927:20
8:48
+0:25
20M
20.00 mi13:42:102:47:208:2212:27
9:10
+0:22
21M
21.00 mi13:51:492:56:598:269:39
9:39
+0:29
35K
21.75 mi13:58:133:03:238:266:24
8:33
-1:06
23M
23.00 mi14:09:293:14:398:2811:16
9:00
+0:27
24M
24.00 mi14:18:073:23:178:288:38
8:38
-0:22
40K
24.85 mi14:25:293:30:398:297:22
8:37
-0:01
25.2M
25.20 mi14:28:483:33:588:293:19
9:37
+1:00
Finish
26.22 mi14:37:133:42:238:298:25
8:16
-1:21

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

8:03 /mi

Average Pace

8:29 /mi

Slowest Pace

9:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:05:42

84% of race

Time at Steady Pace

23:43

11% of race

Time at Slower Pace

12:58

6% of race

Average Pace: 8:29 /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 mi11:19:5225:028:0325:02
8:03
#17077
10K
6.21 mi11:45:2150:318:0825:29
8:12
#17492
15K
9.32 mi12:10:521:16:028:0925:31
8:13
#17471
20K
12.43 mi12:36:321:41:428:1125:40
8:16
#17238
Half
13.11 mi12:42:041:47:148:115:32
8:07
#17199
25K
15.53 mi13:02:232:07:338:1320:19
8:23
#17022
30K
18.64 mi13:29:432:34:538:1927:20
8:48
#16886
20M
20.00 mi13:42:102:47:208:2212:27
9:10
#16932
21M
21.00 mi13:51:492:56:598:269:39
9:39
#16875
35K
21.75 mi13:58:133:03:238:266:24
8:33
#16821
23M
23.00 mi14:09:293:14:398:2811:16
9:00
#16772
24M
24.00 mi14:18:073:23:178:288:38
8:38
#16692
40K
24.85 mi14:25:293:30:398:297:22
8:37
#16577
25.2M
25.20 mi14:28:483:33:588:293:19
9:37
#16563
Finish
26.22 mi14:37:133:42:238:298:25
8:16
#16462
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi170775781578117471(Top 62%)5995(Top 49%)5995(Top 460%)
10K6.21 mi3.10 mi17492-4156029-2486029-24817915(Top 63%)6245(Top 51%)6245(Top 479%)
15K9.32 mi3.11 mi17471+215994+355994+3517471(Top 62%)5995(Top 49%)5995(Top 460%)
20K12.43 mi3.11 mi17238+2335880+1145880+11416715(Top 59%)5616(Top 46%)5616(Top 431%)
Half13.11 mi0.68 mi17199+395861+195861+1916740(Top 59%)5615(Top 46%)5615(Top 431%)
25K15.53 mi2.42 mi17022+1775778+835778+8316453(Top 58%)5564(Top 46%)5564(Top 427%)
30K18.64 mi3.11 mi16886+1365746+325746+3216603(Top 58%)5806(Top 47%)5806(Top 446%)
20M20.00 mi1.36 mi16932-465797-515797-5117605(Top 62%)6469(Top 53%)6469(Top 496%)
21M21.00 mi1.00 mi16875+575794+35794+316795(Top 59%)6144(Top 50%)6144(Top 472%)
35K21.75 mi0.75 mi16821+545781+135781+1315830(Top 56%)5687(Top 47%)5687(Top 436%)
23M23.00 mi1.25 mi16772+495795-145795-1416257(Top 57%)6031(Top 49%)6031(Top 463%)
24M24.00 mi1.00 mi16692+805772+235772+2315374(Top 54%)5585(Top 46%)5585(Top 429%)
40K24.85 mi0.85 mi16577+1155732+405732+4014192(Top 50%)5072(Top 41%)5072(Top 389%)
25.2M25.20 mi0.35 mi16563+145737-55737-515238(Top 54%)5679(Top 46%)5679(Top 436%)
Finish26.22 mi1.02 mi16462+1015707+305707+3014698(Top 52%)5319(Top 43%)5319(Top 408%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21story building
+97ft-345ft

Overall

17471

Females

5995

F50-54

5995

5K→10K

3.1 - 6.2 mi

Top 63%
×5story building
+79ft-138ft

Overall

17915

Females

6245

F50-54

6245

10K→15K

6.2 - 9.3 mi

Top 62%
×3story building
+67ft-78ft

Overall

17471

Females

5995

F50-54

5995

15K→20K

9.3 - 12.4 mi

Top 59%
×5story building
+106ft-86ft

Overall

16715

Females

5616

F50-54

5616

20K→Half

12.4 - 13.1 mi

Top 59%
×2story building
+19ft-37ft

Overall

16740

Females

5615

F50-54

5615

Half→25K

13.1 - 15.5 mi

Top 58%
×4story building
+66ft-88ft

Overall

16453

Females

5564

F50-54

5564

25K→30K

15.5 - 18.6 mi

Top 58%
×9story building
+181ft-148ft

Overall

16603

Females

5806

F50-54

5806

30K→20M

18.6 - 20.0 mi

Top 62%
×5story building
+64ft-50ft

Overall

17605

Females

6469

F50-54

6469

20M→21M

20.0 - 21.0 mi

Top 59%
×8story building
+106ft-24ft

Overall

16795

Females

6144

F50-54

6144

21M→35K

21.0 - 21.8 mi

Top 56%
×7story building
+17ft-86ft

Overall

15830

Females

5687

F50-54

5687

35K→23M

21.8 - 23.0 mi

Top 57%
×5story building
+23ft-63ft

Overall

16257

Females

6031

F50-54

6031

23M→24M

23.0 - 24.0 mi

Top 54%
×6story building
+12ft-82ft

Overall

15374

Females

5585

F50-54

5585

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

14192

Females

5072

F50-54

5072

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

15238

Females

5679

F50-54

5679

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2story building
+22ft-21ft

Overall

14698

Females

5319

F50-54

5319

Passing Analysis

Category:
Athletes Passed
2104
Passed By
1489
Net Change
+615
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17077
5K → 10K144559-415#17077#17492
10K → 15K219198+21#17492#17471
15K → 20K30067+233#17471#17238
20K → Half5213+39#17238#17199
Half → 25K24568+177#17199#17022
25K → 30K281145+136#17022#16886
30K → 20M81127-46#16886#16932
20M → 21M14083+57#16932#16875
21M → 35K8531+54#16875#16821
35K → 23M13182+49#16821#16772
23M → 24M12040+80#16772#16692
24M → 40K13520+115#16692#16577
40K → 25.2M3824+14#16577#16563
25.2M → Finish13332+101#16563#16462
TOTALS21041489+615
📊

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