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BOSTON MARATHON 2025

Caroline Guillain

Bib: 20750•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F50-54)
#0 / 1303
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
8:49/mi
27:23
↑ 97↓ 3451.5%
10K· 6.21 mi
9:01/mi
55:25
↑ 79↓ 1380.4%
15K· 9.32 mi
9:07/mi
1:23:46
↑ 67↓ 78
20K· 12.43 mi
9:16/mi
1:52:33
↑ 106↓ 860.1%
Half· 13.11 mi
9:08/mi
1:58:47
↑ 19↓ 370.5%
25K· 15.53 mi
9:17/mi
2:21:17
↑ 66↓ 880.2%
30K· 18.64 mi
9:51/mi
2:51:53
↑ 181↓ 1480.2%
20M
10:17/mi
3:05:51
↑ 64↓ 500.2%
21M
11:32/mi
3:17:23
↑ 106↓ 241.6%
35K· 21.75 mi
9:36/mi
3:24:34
↑ 17↓ 861.7%
23M
9:54/mi
3:36:58
↑ 23↓ 630.6%
24M
9:28/mi
3:46:26
↓ 821.3%
40K· 24.85 mi
9:52/mi
3:54:52
↓ 200.3%
25.2M
10:55/mi
3:58:38
↑ 13↓ 160.2%
Finish· 26.22 mi
9:58/mi
4:08:47
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:58:47
Pace9:04 /mi
2nd Half
Distance13.11 mi
Time2:10:00
Pace9:55 /mi
📊Positive Split: 9.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:1027:238:4927:23
8:49
-
10K
6.21 mi11:48:1255:258:5528:02
9:01
+0:12
15K
9.32 mi12:16:331:23:468:5928:21
9:07
+0:06
20K
12.43 mi12:45:201:52:339:0328:47
9:16
+0:09
Half
13.11 mi12:51:341:58:479:046:14
9:08
-0:08
25K
15.53 mi13:14:042:21:179:0622:30
9:17
+0:09
30K
18.64 mi13:44:402:51:539:1330:36
9:51
+0:34
20M
20.00 mi13:58:383:05:519:1813:58
10:17
+0:26
21M
21.00 mi14:10:103:17:239:2411:32
11:32
+1:15
35K
21.75 mi14:17:213:24:349:247:11
9:36
-1:56
23M
23.00 mi14:29:453:36:589:2612:24
9:54
+0:18
24M
24.00 mi14:39:133:46:269:269:28
9:28
-0:26
40K
24.85 mi14:47:393:54:529:278:26
9:52
+0:24
25.2M
25.20 mi14:51:253:58:389:283:46
10:55
+1:03
Finish
26.22 mi15:01:344:08:479:3010:09
9:58
-0:57

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

8:49 /mi

Average Pace

9:30 /mi

Slowest Pace

11:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:30:00

36% of race

Time at Steady Pace

1:59:22

48% of race

Time at Slower Pace

39:25

16% of race

Average Pace: 9:29 /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 mi11:20:1027:238:4927:23
8:49
#21588
10K
6.21 mi11:48:1255:258:5528:02
9:01
#22052
15K
9.32 mi12:16:331:23:468:5928:21
9:07
#22224
20K
12.43 mi12:45:201:52:339:0328:47
9:16
#22188
Half
13.11 mi12:51:341:58:479:046:14
9:08
#22185
25K
15.53 mi13:14:042:21:179:0622:30
9:17
#21983
30K
18.64 mi13:44:402:51:539:1330:36
9:51
#21860
20M
20.00 mi13:58:383:05:519:1813:58
10:17
#21840
21M
21.00 mi14:10:103:17:239:2411:32
11:32
#21914
35K
21.75 mi14:17:213:24:349:247:11
9:36
#21854
23M
23.00 mi14:29:453:36:589:2612:24
9:54
#21737
24M
24.00 mi14:39:133:46:269:269:28
9:28
#21638
40K
24.85 mi14:47:393:54:529:278:26
9:52
#21560
25.2M
25.20 mi14:51:253:58:389:283:46
10:55
#21546
Finish
26.22 mi15:01:344:08:479:3010:09
9:58
#21584
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi215888400840022571(Top 79%)8873(Top 73%)8873(Top 681%)
10K6.21 mi3.10 mi22052-4648643-2438643-24322490(Top 79%)8859(Top 72%)8859(Top 680%)
15K9.32 mi3.11 mi22224-1728711-688711-6822571(Top 79%)8873(Top 73%)8873(Top 681%)
20K12.43 mi3.11 mi22188+368697+148697+1422166(Top 78%)8676(Top 71%)8676(Top 666%)
Half13.11 mi0.68 mi22185+38699-28699-222395(Top 79%)8825(Top 72%)8825(Top 677%)
25K15.53 mi2.42 mi21983+2028595+1048595+10421108(Top 74%)8157(Top 67%)8157(Top 626%)
30K18.64 mi3.11 mi21860+1238545+508545+5021162(Top 75%)8323(Top 68%)8323(Top 639%)
20M20.00 mi1.36 mi21840+208546-18546-121804(Top 77%)8789(Top 72%)8789(Top 675%)
21M21.00 mi1.00 mi21914-748616-708616-7022678(Top 80%)9335(Top 76%)9335(Top 716%)
35K21.75 mi0.75 mi21854+608598+188598+1820712(Top 73%)8358(Top 68%)8358(Top 641%)
23M23.00 mi1.25 mi21737+1178566+328566+3220187(Top 71%)8148(Top 67%)8148(Top 625%)
24M24.00 mi1.00 mi21638+998534+328534+3219536(Top 69%)7850(Top 64%)7850(Top 602%)
40K24.85 mi0.85 mi21560+788506+288506+2820020(Top 70%)8174(Top 67%)8174(Top 627%)
25.2M25.20 mi0.35 mi21546+148509-38509-320431(Top 72%)8379(Top 69%)8379(Top 643%)
Finish26.22 mi1.02 mi21584-388548-398548-3922818(Top 80%)9576(Top 78%)9576(Top 735%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21story building
+97ft-345ft

Overall

22571

Females

8873

F50-54

8873

5K→10K

3.1 - 6.2 mi

Top 79%
×5story building
+79ft-138ft

Overall

22490

Females

8859

F50-54

8859

10K→15K

6.2 - 9.3 mi

Top 79%
×3story building
+67ft-78ft

Overall

22571

Females

8873

F50-54

8873

15K→20K

9.3 - 12.4 mi

Top 78%
×5story building
+106ft-86ft

Overall

22166

Females

8676

F50-54

8676

20K→Half

12.4 - 13.1 mi

Top 79%
×2story building
+19ft-37ft

Overall

22395

Females

8825

F50-54

8825

Half→25K

13.1 - 15.5 mi

Top 74%
×4story building
+66ft-88ft

Overall

21108

Females

8157

F50-54

8157

25K→30K

15.5 - 18.6 mi

Top 75%
×9story building
+181ft-148ft

Overall

21162

Females

8323

F50-54

8323

30K→20M

18.6 - 20.0 mi

Top 77%
×5story building
+64ft-50ft

Overall

21804

Females

8789

F50-54

8789

20M→21M

20.0 - 21.0 mi

Top 80%
×8story building
+106ft-24ft

Overall

22678

Females

9335

F50-54

9335

21M→35K

21.0 - 21.8 mi

Top 73%
×7story building
+17ft-86ft

Overall

20712

Females

8358

F50-54

8358

35K→23M

21.8 - 23.0 mi

Top 71%
×5story building
+23ft-63ft

Overall

20187

Females

8148

F50-54

8148

23M→24M

23.0 - 24.0 mi

Top 69%
×6story building
+12ft-82ft

Overall

19536

Females

7850

F50-54

7850

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

20020

Females

8174

F50-54

8174

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

20431

Females

8379

F50-54

8379

25.2M→Finish

25.2 - 26.2 mi

Top 80%
×2story building
+22ft-21ft

Overall

22818

Females

9576

F50-54

9576

Passing Analysis

Category:
Athletes Passed
1626
Passed By
1622
Net Change
+4
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21588
5K → 10K108572-464#21588#22052
10K → 15K136308-172#22052#22224
15K → 20K199163+36#22224#22188
20K → Half3835+3#22188#22185
Half → 25K25250+202#22185#21983
25K → 30K253130+123#21983#21860
30K → 20M10484+20#21860#21840
20M → 21M53127-74#21840#21914
21M → 35K7313+60#21914#21854
35K → 23M13821+117#21854#21737
23M → 24M10910+99#21737#21638
24M → 40K9820+78#21638#21560
40K → 25.2M3016+14#21560#21546
25.2M → Finish3573-38#21546#21584
TOTALS16261622+4
📊

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