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BOSTON MARATHON 2025

Karen Chagnon

Bib: 26504•F

CT

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F40-44)
#0 / 1718
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
30:00
Rank: #24715
Start → 5K
9:39/mi
30:00 split
10K· 6.21 mi
59:52
Rank: #24557 (+158)
5K → 10K
9:37/mi
29:52 split
15K· 9.32 mi
1:29:12
Rank: #24239 (+318)
10K → 15K
9:26/mi
29:20 split
20K· 12.43 mi
1:58:33
Rank: #23844 (+395)
15K → 20K
9:27/mi
29:21 split
Half· 13.11 mi
2:04:54
Rank: #23811 (+33)
20K → Half
9:18/mi
6:21 split
25K· 15.53 mi
2:27:51
Rank: #23465 (+346)
Half → 25K
9:28/mi
22:57 split
30K· 18.64 mi
2:57:21
Rank: #22837 (+628)
25K → 30K
9:30/mi
29:30 split
20M
3:10:17
Rank: #22606 (+231)
30K → 20M
9:31/mi
12:56 split
21M
3:20:05
Rank: #22337 (+269)
20M → 21M
9:48/mi
9:48 split
35K· 21.75 mi
3:26:24
Rank: #22143 (+194)
21M → 35K
8:27/mi
6:19 split
23M
3:37:42
Rank: #21841 (+302)
35K → 23M
9:02/mi
11:18 split
24M
3:46:48
Rank: #21693 (+148)
23M → 24M
9:06/mi
9:06 split
40K· 24.85 mi
3:54:28
Rank: #21503 (+190)
24M → 40K
8:58/mi
7:40 split
25.2M
3:57:40
Rank: #21401 (+102)
40K → 25.2M
9:17/mi
3:12 split
Finish· 26.22 mi
4:05:44
Rank: #21158 (+243)
25.2M → Finish
7:55/mi
8:04 split

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time2:04:54
Pace9:32 /mi
2nd Half✓ Faster
Distance13.11 mi
Time2:00:50
Pace9:13 /mi
📊Negative Split: 3.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:1530:009:3930:00
9:39
-
10K
6.21 mi12:15:0759:529:3829:52
9:37
-0:02
15K
9.32 mi12:44:271:29:129:3429:20
9:26
-0:11
20K
12.43 mi13:13:481:58:339:3229:21
9:27
+0:01
Half
13.11 mi13:20:092:04:549:326:21
9:18
-0:09
25K
15.53 mi13:43:062:27:519:3122:57
9:28
+0:10
30K
18.64 mi14:12:362:57:219:3129:30
9:30
+0:02
20M
20.00 mi14:25:323:10:179:3112:56
9:31
+0:01
21M
21.00 mi14:35:203:20:059:329:48
9:48
+0:17
35K
21.75 mi14:41:393:26:249:296:19
8:27
-1:21
23M
23.00 mi14:52:573:37:429:2811:18
9:02
+0:35
24M
24.00 mi15:02:033:46:489:279:06
9:06
+0:04
40K
24.85 mi15:09:433:54:289:267:40
8:58
-0:08
25.2M
25.20 mi15:12:553:57:409:263:12
9:17
+0:19
Finish
26.22 mi15:20:594:05:449:238:04
7:55
-1:22

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

7:55 /mi

Average Pace

9:23 /mi

Slowest Pace

9:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

42:27

17% of race

Time at Steady Pace

3:13:29

79% of race

Time at Slower Pace

9:48

4% of race

Average Pace: 9:22 /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 mi11:45:1530:009:3930:00
9:39
#24715
10K
6.21 mi12:15:0759:529:3829:52
9:37
#24557
15K
9.32 mi12:44:271:29:129:3429:20
9:26
#24239
20K
12.43 mi13:13:481:58:339:3229:21
9:27
#23844
Half
13.11 mi13:20:092:04:549:326:21
9:18
#23811
25K
15.53 mi13:43:062:27:519:3122:57
9:28
#23465
30K
18.64 mi14:12:362:57:219:3129:30
9:30
#22837
20M
20.00 mi14:25:323:10:179:3112:56
9:31
#22606
21M
21.00 mi14:35:203:20:059:329:48
9:48
#22337
35K
21.75 mi14:41:393:26:249:296:19
8:27
#22143
23M
23.00 mi14:52:573:37:429:2811:18
9:02
#21841
24M
24.00 mi15:02:033:46:489:279:06
9:06
#21693
40K
24.85 mi15:09:433:54:289:267:40
8:58
#21503
25.2M
25.20 mi15:12:553:57:409:263:12
9:17
#21401
Finish
26.22 mi15:20:594:05:449:238:04
7:55
#21158
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi24715100671006723577(Top 83%)9419(Top 77%)9419(Top 548%)
10K6.21 mi3.10 mi24557+1589981+869981+8624392(Top 86%)9908(Top 81%)9908(Top 577%)
15K9.32 mi3.11 mi24239+3189812+1699812+16923577(Top 83%)9419(Top 77%)9419(Top 548%)
20K12.43 mi3.11 mi23844+3959609+2039609+20322742(Top 80%)8997(Top 74%)8997(Top 524%)
Half13.11 mi0.68 mi23811+339584+259584+2522992(Top 81%)9136(Top 75%)9136(Top 532%)
25K15.53 mi2.42 mi23465+3469395+1899395+18921749(Top 77%)8517(Top 70%)8517(Top 496%)
30K18.64 mi3.11 mi22837+6289087+3089087+30819935(Top 70%)7629(Top 62%)7629(Top 444%)
20M20.00 mi1.36 mi22606+2318993+948993+9419279(Top 68%)7419(Top 61%)7419(Top 432%)
21M21.00 mi1.00 mi22337+2698852+1418852+14117512(Top 62%)6548(Top 54%)6548(Top 381%)
35K21.75 mi0.75 mi22143+1948758+948758+9415196(Top 53%)5358(Top 44%)5358(Top 312%)
23M23.00 mi1.25 mi21841+3028629+1298629+12916443(Top 58%)6148(Top 50%)6148(Top 358%)
24M24.00 mi1.00 mi21693+1488566+638566+6317930(Top 63%)7007(Top 57%)7007(Top 408%)
40K24.85 mi0.85 mi21503+1908476+908476+9016171(Top 57%)6152(Top 50%)6152(Top 358%)
25.2M25.20 mi0.35 mi21401+1028431+458431+4513478(Top 47%)4787(Top 39%)4787(Top 279%)
Finish26.22 mi1.02 mi21158+2438312+1198312+11912362(Top 44%)4132(Top 34%)4132(Top 241%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21stories
+97ft-345ft

Overall

23577

Females

9419

F40-44

9419

5K→10K

3.1 - 6.2 mi

Top 86%
×5stories
+79ft-138ft

Overall

24392

Females

9908

F40-44

9908

10K→15K

6.2 - 9.3 mi

Top 83%
×3stories
+67ft-78ft

Overall

23577

Females

9419

F40-44

9419

15K→20K

9.3 - 12.4 mi

Top 80%
×5stories
+106ft-86ft

Overall

22742

Females

8997

F40-44

8997

20K→Half

12.4 - 13.1 mi

Top 81%
×2stories
+19ft-37ft

Overall

22992

Females

9136

F40-44

9136

Half→25K

13.1 - 15.5 mi

Top 77%
×4stories
+66ft-88ft

Overall

21749

Females

8517

F40-44

8517

25K→30K

15.5 - 18.6 mi

Top 70%
×9stories
+181ft-148ft

Overall

19935

Females

7629

F40-44

7629

30K→20M

18.6 - 20.0 mi

Top 68%
×5stories
+64ft-50ft

Overall

19279

Females

7419

F40-44

7419

20M→21M

20.0 - 21.0 mi

Top 62%
×8stories
+106ft-24ft

Overall

17512

Females

6548

F40-44

6548

21M→35K

21.0 - 21.8 mi

Top 53%
×7stories
+17ft-86ft

Overall

15196

Females

5358

F40-44

5358

35K→23M

21.8 - 23.0 mi

Top 58%
×5stories
+23ft-63ft

Overall

16443

Females

6148

F40-44

6148

23M→24M

23.0 - 24.0 mi

Top 63%
×6stories
+12ft-82ft

Overall

17930

Females

7007

F40-44

7007

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

16171

Females

6152

F40-44

6152

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

13478

Females

4787

F40-44

4787

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2stories
+22ft-21ft

Overall

12362

Females

4132

F40-44

4132

Passing Analysis

Category:
Athletes Passed
3744
Passed By
187
Net Change
+3557
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24715
5K → 10K283125+158#24715#24557
10K → 15K34830+318#24557#24239
15K → 20K4016+395#24239#23844
20K → Half407+33#23844#23811
Half → 25K3526+346#23811#23465
25K → 30K6313+628#23465#22837
30K → 20M2343+231#22837#22606
20M → 21M2690+269#22606#22337
21M → 35K1951+194#22337#22143
35K → 23M3031+302#22143#21841
23M → 24M1513+148#21841#21693
24M → 40K1911+190#21693#21503
40K → 25.2M1031+102#21503#21401
25.2M → Finish2430+243#21401#21158
TOTALS3744187+3557
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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