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BOSTON MARATHON 2025

Laurence Marchal

Bib: 21627•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 41%
Masters (Masters Women)
#0 / 6759
Top 27%
Division (F50-54)
#0 / 1303
Top 18%
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
7:54/mi
24:33
↑ 97↓ 3451.5%
10K· 6.21 mi
7:54/mi
49:06
↑ 79↓ 1380.4%
15K· 9.32 mi
8:04/mi
1:14:09
↑ 67↓ 78
20K· 12.43 mi
8:11/mi
1:39:34
↑ 106↓ 860.1%
Half· 13.11 mi
8:01/mi
1:45:02
↑ 19↓ 370.5%
25K· 15.53 mi
8:23/mi
2:05:21
↑ 66↓ 880.2%
30K· 18.64 mi
8:32/mi
2:31:53
↑ 181↓ 1480.2%
20M
8:43/mi
2:43:44
↑ 64↓ 500.2%
21M
9:16/mi
2:53:00
↑ 106↓ 241.6%
35K· 21.75 mi
8:05/mi
2:59:03
↑ 17↓ 861.7%
23M
8:34/mi
3:09:46
↑ 23↓ 630.6%
24M
8:28/mi
3:18:14
↓ 821.3%
40K· 24.85 mi
8:25/mi
3:25:26
↓ 200.3%
25.2M
9:28/mi
3:28:42
↑ 13↓ 160.2%
Finish· 26.22 mi
8:21/mi
3:37:13
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:02
Pace8:01 /mi
2nd Half
Distance13.11 mi
Time1:52:11
Pace8:33 /mi
📊Positive Split: 6.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:4424:337:5424:33
7:54
-
10K
6.21 mi11:44:1749:067:5424:33
7:54
0:00
15K
9.32 mi12:09:201:14:097:5725:03
8:04
+0:10
20K
12.43 mi12:34:451:39:348:0125:25
8:11
+0:07
Half
13.11 mi12:40:131:45:028:015:28
8:01
-0:10
25K
15.53 mi13:00:322:05:218:0420:19
8:23
+0:22
30K
18.64 mi13:27:042:31:538:0926:32
8:32
+0:09
20M
20.00 mi13:38:552:43:448:1111:51
8:43
+0:11
21M
21.00 mi13:48:112:53:008:149:16
9:16
+0:33
35K
21.75 mi13:54:142:59:038:146:03
8:05
-1:11
23M
23.00 mi14:04:573:09:468:1510:43
8:34
+0:29
24M
24.00 mi14:13:253:18:148:168:28
8:28
-0:06
40K
24.85 mi14:20:373:25:268:167:12
8:25
-0:03
25.2M
25.20 mi14:23:533:28:428:173:16
9:28
+1:03
Finish
26.22 mi14:32:243:37:138:178:31
8:21
-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

7:54 /mi

Average Pace

8:17 /mi

Slowest Pace

9:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:12:50

89% of race

Time at Steady Pace

21:07

10% of race

Time at Slower Pace

3:16

2% of race

Average Pace: 8:17 /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 mi11:19:4424:337:5424:33
7:54
#15717
10K
6.21 mi11:44:1749:067:5424:33
7:54
#15700
15K
9.32 mi12:09:201:14:097:5725:03
8:04
#15980
20K
12.43 mi12:34:451:39:348:0125:25
8:11
#16026
Half
13.11 mi12:40:131:45:028:015:28
8:01
#16027
25K
15.53 mi13:00:322:05:218:0420:19
8:23
#16091
30K
18.64 mi13:27:042:31:538:0926:32
8:32
#15856
20M
20.00 mi13:38:552:43:448:1111:51
8:43
#15758
21M
21.00 mi13:48:112:53:008:149:16
9:16
#15674
35K
21.75 mi13:54:142:59:038:146:03
8:05
#15552
23M
23.00 mi14:04:573:09:468:1510:43
8:34
#15389
24M
24.00 mi14:13:253:18:148:168:28
8:28
#15320
40K
24.85 mi14:20:373:25:268:167:12
8:25
#15209
25.2M
25.20 mi14:23:533:28:428:173:16
9:28
#15194
Finish
26.22 mi14:32:243:37:138:178:31
8:21
#15196
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi157174969496916515(Top 58%)5447(Top 45%)5447(Top 418%)
10K6.21 mi3.10 mi15700+174960+94960+915691(Top 55%)4941(Top 40%)4941(Top 379%)
15K9.32 mi3.11 mi15980-2805133-1735133-17316515(Top 58%)5447(Top 45%)5447(Top 418%)
20K12.43 mi3.11 mi16026-465167-345167-3416189(Top 57%)5328(Top 44%)5328(Top 409%)
Half13.11 mi0.68 mi16027-15169-25169-216052(Top 57%)5213(Top 43%)5213(Top 400%)
25K15.53 mi2.42 mi16091-645214-455214-4516440(Top 58%)5551(Top 45%)5551(Top 426%)
30K18.64 mi3.11 mi15856+2355139+755139+7515015(Top 53%)4914(Top 40%)4914(Top 377%)
20M20.00 mi1.36 mi15758+985128+115128+1115204(Top 54%)5154(Top 42%)5154(Top 396%)
21M21.00 mi1.00 mi15674+845122+65122+614985(Top 53%)5168(Top 42%)5168(Top 397%)
35K21.75 mi0.75 mi15552+1225066+565066+5612903(Top 45%)4122(Top 34%)4122(Top 316%)
23M23.00 mi1.25 mi15389+1635008+585008+5813690(Top 48%)4641(Top 38%)4641(Top 356%)
24M24.00 mi1.00 mi15320+694993+154993+1514318(Top 50%)4987(Top 41%)4987(Top 383%)
40K24.85 mi0.85 mi15209+1114966+274966+2712965(Top 46%)4427(Top 36%)4427(Top 340%)
25.2M25.20 mi0.35 mi15194+154964+24964+214487(Top 51%)5276(Top 43%)5276(Top 405%)
Finish26.22 mi1.02 mi15196-24989-254989-2515314(Top 54%)5647(Top 46%)5647(Top 433%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 58%
×21story building
+97ft-345ft

Overall

16515

Females

5447

F50-54

5447

5K→10K

3.1 - 6.2 mi

Top 55%
×5story building
+79ft-138ft

Overall

15691

Females

4941

F50-54

4941

10K→15K

6.2 - 9.3 mi

Top 58%
×3story building
+67ft-78ft

Overall

16515

Females

5447

F50-54

5447

15K→20K

9.3 - 12.4 mi

Top 57%
×5story building
+106ft-86ft

Overall

16189

Females

5328

F50-54

5328

20K→Half

12.4 - 13.1 mi

Top 57%
×2story building
+19ft-37ft

Overall

16052

Females

5213

F50-54

5213

Half→25K

13.1 - 15.5 mi

Top 58%
×4story building
+66ft-88ft

Overall

16440

Females

5551

F50-54

5551

25K→30K

15.5 - 18.6 mi

Top 53%
×9story building
+181ft-148ft

Overall

15015

Females

4914

F50-54

4914

30K→20M

18.6 - 20.0 mi

Top 54%
×5story building
+64ft-50ft

Overall

15204

Females

5154

F50-54

5154

20M→21M

20.0 - 21.0 mi

Top 53%
×8story building
+106ft-24ft

Overall

14985

Females

5168

F50-54

5168

21M→35K

21.0 - 21.8 mi

Top 45%
×7story building
+17ft-86ft

Overall

12903

Females

4122

F50-54

4122

35K→23M

21.8 - 23.0 mi

Top 48%
×5story building
+23ft-63ft

Overall

13690

Females

4641

F50-54

4641

23M→24M

23.0 - 24.0 mi

Top 50%
×6story building
+12ft-82ft

Overall

14318

Females

4987

F50-54

4987

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

12965

Females

4427

F50-54

4427

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

14487

Females

5276

F50-54

5276

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2story building
+22ft-21ft

Overall

15314

Females

5647

F50-54

5647

Passing Analysis

Category:
Athletes Passed
2134
Passed By
1613
Net Change
+521
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15717
5K → 10K321304+17#15717#15700
10K → 15K125405-280#15700#15980
15K → 20K185231-46#15980#16026
20K → Half3637-1#16026#16027
Half → 25K148212-64#16027#16091
25K → 30K340105+235#16091#15856
30K → 20M16971+98#15856#15758
20M → 21M15672+84#15758#15674
21M → 35K1286+122#15674#15552
35K → 23M19128+163#15552#15389
23M → 24M10334+69#15389#15320
24M → 40K12514+111#15320#15209
40K → 25.2M3722+15#15209#15194
25.2M → Finish7072-2#15194#15196
TOTALS21341613+521
📊

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