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BOSTON MARATHON 2025

Keri Dennis

Bib: 20644•F

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 38%
Masters (Masters Women)
#0 / 6759
Top 24%
Division (F40-44)
#0 / 1718
Top 47%
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
7:51/mi
24:23
↑ 97↓ 3451.5%
10K· 6.21 mi
7:49/mi
48:41
↑ 79↓ 1380.4%
15K· 9.32 mi
7:47/mi
1:12:51
↑ 67↓ 78
20K· 12.43 mi
7:56/mi
1:37:29
↑ 106↓ 860.1%
Half· 13.11 mi
7:50/mi
1:42:50
↑ 19↓ 370.5%
25K· 15.53 mi
8:04/mi
2:02:24
↑ 66↓ 880.2%
30K· 18.64 mi
8:30/mi
2:28:47
↑ 181↓ 1480.2%
20M
8:42/mi
2:40:37
↑ 64↓ 500.2%
21M
9:22/mi
2:49:59
↑ 106↓ 241.6%
35K· 21.75 mi
8:44/mi
2:56:31
↑ 17↓ 861.7%
23M
8:38/mi
3:07:19
↑ 23↓ 630.6%
24M
8:47/mi
3:16:06
↓ 821.3%
40K· 24.85 mi
8:46/mi
3:23:36
↓ 200.3%
25.2M
9:34/mi
3:26:54
↑ 13↓ 160.2%
Finish· 26.22 mi
8:16/mi
3:35:19
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:50
Pace7:51 /mi
2nd Half
Distance13.11 mi
Time1:52:29
Pace8:35 /mi
📊Positive Split: 9.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:4024:237:5124:23
7:51
-
10K
6.21 mi11:41:5848:417:5024:18
7:49
-0:02
15K
9.32 mi12:06:081:12:517:4924:10
7:47
-0:02
20K
12.43 mi12:30:461:37:297:5124:38
7:56
+0:09
Half
13.11 mi12:36:071:42:507:515:21
7:50
-0:06
25K
15.53 mi12:55:412:02:247:5319:34
8:04
+0:14
30K
18.64 mi13:22:042:28:477:5926:23
8:30
+0:26
20M
20.00 mi13:33:542:40:378:0211:50
8:42
+0:12
21M
21.00 mi13:43:162:49:598:069:22
9:22
+0:40
35K
21.75 mi13:49:482:56:318:076:32
8:44
-0:38
23M
23.00 mi14:00:363:07:198:0910:48
8:38
-0:06
24M
24.00 mi14:09:233:16:068:108:47
8:47
+0:09
40K
24.85 mi14:16:533:23:368:117:30
8:46
-0:01
25.2M
25.20 mi14:20:113:26:548:133:18
9:34
+0:48
Finish
26.22 mi14:28:363:35:198:138:25
8:16
-1:18

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

7:47 /mi

Average Pace

8:13 /mi

Slowest Pace

9:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:02:24

57% of race

Time at Steady Pace

1:11:28

33% of race

Time at Slower Pace

21:27

10% of race

Average Pace: 8:13 /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 mi11:17:4024:237:5124:23
7:51
#15250
10K
6.21 mi11:41:5848:417:5024:18
7:49
#15104
15K
9.32 mi12:06:081:12:517:4924:10
7:47
#14785
20K
12.43 mi12:30:461:37:297:5124:38
7:56
#14635
Half
13.11 mi12:36:071:42:507:515:21
7:50
#14620
25K
15.53 mi12:55:412:02:247:5319:34
8:04
#14548
30K
18.64 mi13:22:042:28:477:5926:23
8:30
#14554
20M
20.00 mi13:33:542:40:378:0211:50
8:42
#14591
21M
21.00 mi13:43:162:49:598:069:22
9:22
#14644
35K
21.75 mi13:49:482:56:318:076:32
8:44
#14690
23M
23.00 mi14:00:363:07:198:0910:48
8:38
#14628
24M
24.00 mi14:09:233:16:068:108:47
8:47
#14690
40K
24.85 mi14:16:533:23:368:117:30
8:46
#14679
25.2M
25.20 mi14:20:113:26:548:133:18
9:34
#14668
Finish
26.22 mi14:28:363:35:198:138:25
8:16
#14640
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi152504685468514197(Top 50%)4136(Top 34%)4136(Top 241%)
10K6.21 mi3.10 mi15104+1464606+794606+7915028(Top 53%)4557(Top 37%)4557(Top 265%)
15K9.32 mi3.11 mi14785+3194423+1834423+18314197(Top 50%)4136(Top 34%)4136(Top 241%)
20K12.43 mi3.11 mi14635+1504364+594364+5914372(Top 51%)4296(Top 35%)4296(Top 250%)
Half13.11 mi0.68 mi14620+154361+34361+314677(Top 52%)4444(Top 36%)4444(Top 259%)
25K15.53 mi2.42 mi14548+724363-24363-214450(Top 51%)4459(Top 36%)4459(Top 260%)
30K18.64 mi3.11 mi14554-64418-554418-5514702(Top 52%)4741(Top 39%)4741(Top 276%)
20M20.00 mi1.36 mi14591-374468-504468-5015128(Top 53%)5108(Top 42%)5108(Top 297%)
21M21.00 mi1.00 mi14644-534525-574525-5715480(Top 54%)5438(Top 44%)5438(Top 317%)
35K21.75 mi0.75 mi14690-464561-364561-3616898(Top 59%)6268(Top 51%)6268(Top 365%)
23M23.00 mi1.25 mi14628+624563-24563-214106(Top 50%)4850(Top 40%)4850(Top 282%)
24M24.00 mi1.00 mi14690-624626-634626-6316231(Top 57%)6057(Top 50%)6057(Top 353%)
40K24.85 mi0.85 mi14679+114646-204646-2015037(Top 53%)5532(Top 45%)5532(Top 322%)
25.2M25.20 mi0.35 mi14668+114652-64652-614979(Top 53%)5526(Top 45%)5526(Top 322%)
Finish26.22 mi1.02 mi14640+284668-164668-1614679(Top 52%)5300(Top 43%)5300(Top 308%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21story building
+97ft-345ft

Overall

14197

Females

4136

F40-44

4136

5K→10K

3.1 - 6.2 mi

Top 53%
×5story building
+79ft-138ft

Overall

15028

Females

4557

F40-44

4557

10K→15K

6.2 - 9.3 mi

Top 50%
×3story building
+67ft-78ft

Overall

14197

Females

4136

F40-44

4136

15K→20K

9.3 - 12.4 mi

Top 51%
×5story building
+106ft-86ft

Overall

14372

Females

4296

F40-44

4296

20K→Half

12.4 - 13.1 mi

Top 52%
×2story building
+19ft-37ft

Overall

14677

Females

4444

F40-44

4444

Half→25K

13.1 - 15.5 mi

Top 51%
×4story building
+66ft-88ft

Overall

14450

Females

4459

F40-44

4459

25K→30K

15.5 - 18.6 mi

Top 52%
×9story building
+181ft-148ft

Overall

14702

Females

4741

F40-44

4741

30K→20M

18.6 - 20.0 mi

Top 53%
×5story building
+64ft-50ft

Overall

15128

Females

5108

F40-44

5108

20M→21M

20.0 - 21.0 mi

Top 54%
×8story building
+106ft-24ft

Overall

15480

Females

5438

F40-44

5438

21M→35K

21.0 - 21.8 mi

Top 59%
×7story building
+17ft-86ft

Overall

16898

Females

6268

F40-44

6268

35K→23M

21.8 - 23.0 mi

Top 50%
×5story building
+23ft-63ft

Overall

14106

Females

4850

F40-44

4850

23M→24M

23.0 - 24.0 mi

Top 57%
×6story building
+12ft-82ft

Overall

16231

Females

6057

F40-44

6057

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

15037

Females

5532

F40-44

5532

40K→25.2M

24.9 - 25.2 mi

Top 53%
×1story
+13ft-16ft

Overall

14979

Females

5526

F40-44

5526

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2story building
+22ft-21ft

Overall

14679

Females

5300

F40-44

5300

Passing Analysis

Category:
Athletes Passed
2151
Passed By
1541
Net Change
+610
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15250
5K → 10K361215+146#15250#15104
10K → 15K38566+319#15104#14785
15K → 20K270120+150#14785#14635
20K → Half4328+15#14635#14620
Half → 25K207135+72#14620#14548
25K → 30K240246-6#14548#14554
30K → 20M125162-37#14554#14591
20M → 21M88141-53#14591#14644
21M → 35K58104-46#14644#14690
35K → 23M12664+62#14690#14628
23M → 24M52114-62#14628#14690
24M → 40K7564+11#14690#14679
40K → 25.2M4534+11#14679#14668
25.2M → Finish7648+28#14668#14640
TOTALS21511541+610
📊

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