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BOSTON MARATHON 2025

Chantal Bouffard

Bib: 21316•F

QC

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 35%
Division (F50-54)
#0 / 1303
Top 29%
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
24:48
↑ 97↓ 3451.5%
10K· 6.21 mi
7:54/mi
49:22
↑ 79↓ 1380.4%
15K· 9.32 mi
7:55/mi
1:13:58
↑ 67↓ 78
20K· 12.43 mi
8:08/mi
1:39:15
↑ 106↓ 860.1%
Half· 13.11 mi
8:05/mi
1:44:46
↑ 19↓ 370.5%
25K· 15.53 mi
8:17/mi
2:04:51
↑ 66↓ 880.2%
30K· 18.64 mi
8:52/mi
2:32:25
↑ 181↓ 1480.2%
20M
9:04/mi
2:44:44
↑ 64↓ 500.2%
21M
10:08/mi
2:54:52
↑ 106↓ 241.6%
35K· 21.75 mi
8:48/mi
3:01:27
↑ 17↓ 861.7%
23M
9:14/mi
3:13:01
↑ 23↓ 630.6%
24M
9:02/mi
3:22:03
↓ 821.3%
40K· 24.85 mi
9:13/mi
3:29:56
↓ 200.3%
25.2M
10:15/mi
3:33:28
↑ 13↓ 160.2%
Finish· 26.22 mi
9:14/mi
3:42:53
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:46
Pace7:59 /mi
2nd Half
Distance13.11 mi
Time1:58:07
Pace9:01 /mi
📊Positive Split: 12.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:1324:487:5924:48
7:59
-
10K
6.21 mi11:42:4749:227:5724:34
7:54
-0:05
15K
9.32 mi12:07:231:13:587:5624:36
7:55
+0:01
20K
12.43 mi12:32:401:39:157:5925:17
8:08
+0:13
Half
13.11 mi12:38:111:44:467:595:31
8:05
-0:03
25K
15.53 mi12:58:162:04:518:0220:05
8:17
+0:12
30K
18.64 mi13:25:502:32:258:1127:34
8:52
+0:35
20M
20.00 mi13:38:092:44:448:1412:19
9:04
+0:12
21M
21.00 mi13:48:172:54:528:2010:08
10:08
+1:04
35K
21.75 mi13:54:523:01:278:216:35
8:48
-1:20
23M
23.00 mi14:06:263:13:018:2411:34
9:14
+0:26
24M
24.00 mi14:15:283:22:038:259:02
9:02
-0:12
40K
24.85 mi14:23:213:29:568:277:53
9:13
+0:11
25.2M
25.20 mi14:26:533:33:288:283:32
10:15
+1:02
Finish
26.22 mi14:36:183:42:538:309:25
9:14
-1:01

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

8:30 /mi

Slowest Pace

10:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:04:51

56% of race

Time at Steady Pace

1:03:23

28% of race

Time at Slower Pace

34:39

16% of race

Average Pace: 8:30 /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 mi11:18:1324:487:5924:48
7:59
#16462
10K
6.21 mi11:42:4749:227:5724:34
7:54
#16074
15K
9.32 mi12:07:231:13:587:5624:36
7:55
#15807
20K
12.43 mi12:32:401:39:157:5925:17
8:08
#15827
Half
13.11 mi12:38:111:44:467:595:31
8:05
#15865
25K
15.53 mi12:58:162:04:518:0220:05
8:17
#15866
30K
18.64 mi13:25:502:32:258:1127:34
8:52
#16062
20M
20.00 mi13:38:092:44:448:1412:19
9:04
#16113
21M
21.00 mi13:48:172:54:528:2010:08
10:08
#16236
35K
21.75 mi13:54:523:01:278:216:35
8:48
#16259
23M
23.00 mi14:06:263:13:018:2411:34
9:14
#16278
24M
24.00 mi14:15:283:22:038:259:02
9:02
#16328
40K
24.85 mi14:23:213:29:568:277:53
9:13
#16372
25.2M
25.20 mi14:26:533:33:288:283:32
10:15
#16415
Finish
26.22 mi14:36:183:42:538:309:25
9:14
#16599
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi164625426542615392(Top 54%)4808(Top 39%)4808(Top 369%)
10K6.21 mi3.10 mi16074+3885187+2395187+23915731(Top 55%)4970(Top 41%)4970(Top 381%)
15K9.32 mi3.11 mi15807+2675018+1695018+16915392(Top 54%)4808(Top 39%)4808(Top 369%)
20K12.43 mi3.11 mi15827-205053-355053-3515915(Top 56%)5164(Top 42%)5164(Top 396%)
Half13.11 mi0.68 mi15865-385073-205073-2016581(Top 58%)5527(Top 45%)5527(Top 424%)
25K15.53 mi2.42 mi15866-15091-185091-1815827(Top 56%)5215(Top 43%)5215(Top 400%)
30K18.64 mi3.11 mi16062-1965258-1675258-16717011(Top 60%)6036(Top 49%)6036(Top 463%)
20M20.00 mi1.36 mi16113-515332-745332-7417151(Top 60%)6222(Top 51%)6222(Top 478%)
21M21.00 mi1.00 mi16236-1235428-965428-9618805(Top 66%)7230(Top 59%)7230(Top 555%)
35K21.75 mi0.75 mi16259-235472-445472-4417259(Top 61%)6494(Top 53%)6494(Top 498%)
23M23.00 mi1.25 mi16278-195508-365508-3617512(Top 62%)6731(Top 55%)6731(Top 517%)
24M24.00 mi1.00 mi16328-505565-575565-5717545(Top 62%)6781(Top 55%)6781(Top 520%)
40K24.85 mi0.85 mi16372-445619-545619-5417460(Top 61%)6836(Top 56%)6836(Top 525%)
25.2M25.20 mi0.35 mi16415-435650-315650-3118105(Top 64%)7180(Top 59%)7180(Top 551%)
Finish26.22 mi1.02 mi16599-1845786-1365786-13620138(Top 71%)8216(Top 67%)8216(Top 631%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

15392

Females

4808

F50-54

4808

5K→10K

3.1 - 6.2 mi

Top 55%
×5story building
+79ft-138ft

Overall

15731

Females

4970

F50-54

4970

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

15392

Females

4808

F50-54

4808

15K→20K

9.3 - 12.4 mi

Top 56%
×5story building
+106ft-86ft

Overall

15915

Females

5164

F50-54

5164

20K→Half

12.4 - 13.1 mi

Top 58%
×2story building
+19ft-37ft

Overall

16581

Females

5527

F50-54

5527

Half→25K

13.1 - 15.5 mi

Top 56%
×4story building
+66ft-88ft

Overall

15827

Females

5215

F50-54

5215

25K→30K

15.5 - 18.6 mi

Top 60%
×9story building
+181ft-148ft

Overall

17011

Females

6036

F50-54

6036

30K→20M

18.6 - 20.0 mi

Top 60%
×5story building
+64ft-50ft

Overall

17151

Females

6222

F50-54

6222

20M→21M

20.0 - 21.0 mi

Top 66%
×8story building
+106ft-24ft

Overall

18805

Females

7230

F50-54

7230

21M→35K

21.0 - 21.8 mi

Top 61%
×7story building
+17ft-86ft

Overall

17259

Females

6494

F50-54

6494

35K→23M

21.8 - 23.0 mi

Top 62%
×5story building
+23ft-63ft

Overall

17512

Females

6731

F50-54

6731

23M→24M

23.0 - 24.0 mi

Top 62%
×6story building
+12ft-82ft

Overall

17545

Females

6781

F50-54

6781

24M→40K

24.0 - 24.9 mi

Top 61%
×1story
+6ft-20ft

Overall

17460

Females

6836

F50-54

6836

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

18105

Females

7180

F50-54

7180

25.2M→Finish

25.2 - 26.2 mi

Top 71%
×2story building
+22ft-21ft

Overall

20138

Females

8216

F50-54

8216

Passing Analysis

Category:
Athletes Passed
1944
Passed By
2081
Net Change
-137
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16462
5K → 10K525137+388#16462#16074
10K → 15K36194+267#16074#15807
15K → 20K190210-20#15807#15827
20K → Half2159-38#15827#15865
Half → 25K180181-1#15865#15866
25K → 30K161357-196#15866#16062
30K → 20M95146-51#16062#16113
20M → 21M66189-123#16113#16236
21M → 35K6285-23#16236#16259
35K → 23M109128-19#16259#16278
23M → 24M64114-50#16278#16328
24M → 40K5599-44#16328#16372
40K → 25.2M1457-43#16372#16415
25.2M → Finish41225-184#16415#16599
TOTALS19442081-137
📊

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