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BOSTON MARATHON 2025

Emily Dennis

NY

Bib: 14342 F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 31%
Gender (Female)
#0 / 12228
Top 14%
Division (F18-39)
#0 / 5469
Top 26%
Race Day Weather
50°/40°F
broken clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:20/mi
22:48
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:21/mi
45:37
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:21/mi
1:08:28
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:21/mi
1:31:17
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:09/mi
1:36:10
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:25/mi
1:54:09
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:35/mi
2:17:43
↑ 181↓ 1480.2%
138 ft elev
20M
7:38/mi
2:28:05
↑ 64↓ 500.2%
148 ft elev
21M
8:14/mi
2:36:19
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:33/mi
2:41:58
↑ 17↓ 861.7%
156 ft elev
23M
7:44/mi
2:51:39
↑ 23↓ 630.6%
116 ft elev
24M
7:33/mi
2:59:12
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:44/mi
3:05:49
↓ 200.3%
20 ft elev
25.2M
8:22/mi
3:08:42
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:24/mi
3:16:14
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:36:107:20 /mi⚡ faster
2nd Half
1:40:047:38 /mi+4.1%
Positive split — 4.1% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
22:487:203.11 mi22:48
7:20
-
10K
45:377:203.10 mi22:49
7:21
+0:01
15K
1:08:287:213.11 mi22:51
7:21
0:00
20K
1:31:177:213.11 mi22:49
7:21
0:00
Half(13.11 mi)
1:36:107:200.68 mi4:53
7:09
-0:12
25K
1:54:097:212.42 mi17:59
7:25
+0:16
30K
2:17:437:233.11 mi23:34
7:35
+0:10
20M
2:28:057:241.36 mi10:22
7:38
+0:03
21M
2:36:197:271.00 mi8:14
8:14
+0:36
35K
2:41:587:270.75 mi5:39
7:33
-0:41
23M
2:51:397:281.25 mi9:41
7:44
+0:11
24M
2:59:127:281.00 mi7:33
7:33
-0:11
40K
3:05:497:290.85 mi6:37
7:44
+0:11
25.2M
3:08:427:290.35 mi2:53
8:22
+0:38
Finish(26.22 mi)
3:16:147:291.02 mi7:32
7:24
-0:58
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

7:09 /mi

Average Pace

7:29 /mi

Slowest Pace

8:22 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

3:05:07

94% of race

Time at Steady Pace

11:07

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:29 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi10762216821681046020952095
10K3.10 mi10693+692154+142154+141070221602160
15K3.11 mi10607+862129+252129+251046020952095
20K3.11 mi10266+3411993+1361993+136942317041704
Half(13.11 mi)0.68 mi10186+801959+341959+34880814201420
25K2.42 mi9984+2021896+631896+63930417751775
30K3.11 mi9606+3781782+1141782+114835815361536
20M1.36 mi9414+1921731+511731+51792315151515
21M1.00 mi9352+621733-21733-2880220682068
35K0.75 mi9318+341736-31736-3903421282128
23M1.25 mi9175+1431713+231713+23812418701870
24M1.00 mi9092+831711+21711+2807218931893
40K0.85 mi9038+541724-131724-13837621592159
25.2M0.35 mi8998+4017241724800820662066
Finish(26.22 mi)1.02 mi8936+621740-161740-16843622472247

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 37%
×21story building
+97ft-345ft

Overall

10460

Females

2095

F18-39

2095

5K→10K

3.1 - 6.2 mi

Top 38%
×5story building
+79ft-138ft

Overall

10702

Females

2160

F18-39

2160

10K→15K

6.2 - 9.3 mi

Top 37%
×3story building
+67ft-78ft

Overall

10460

Females

2095

F18-39

2095

15K→20K

9.3 - 12.4 mi

Top 33%
×5story building
+106ft-86ft

Overall

9423

Females

1704

F18-39

1704

20K→Half

12.4 - 13.1 mi

Top 31%
×2story building
+19ft-37ft

Overall

8808

Females

1420

F18-39

1420

Half→25K

13.1 - 15.5 mi

Top 33%
×4story building
+66ft-88ft

Overall

9304

Females

1775

F18-39

1775

25K→30K

15.5 - 18.6 mi

Top 29%
×9story building
+181ft-148ft

Overall

8358

Females

1536

F18-39

1536

30K→20M

18.6 - 20.0 mi

Top 28%
×5story building
+64ft-50ft

Overall

7923

Females

1515

F18-39

1515

20M→21M

20.0 - 21.0 mi

Top 31%
×8story building
+106ft-24ft

Overall

8802

Females

2068

F18-39

2068

21M→35K

21.0 - 21.8 mi

Top 32%
×7story building
+17ft-86ft

Overall

9034

Females

2128

F18-39

2128

35K→23M

21.8 - 23.0 mi

Top 29%
×5story building
+23ft-63ft

Overall

8124

Females

1870

F18-39

1870

23M→24M

23.0 - 24.0 mi

Top 28%
×6story building
+12ft-82ft

Overall

8072

Females

1893

F18-39

1893

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

8376

Females

2159

F18-39

2159

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

8008

Females

2066

F18-39

2066

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2story building
+22ft-21ft

Overall

8436

Females

2247

F18-39

2247

Passing Analysis

Category:
Passed
2606*
Passed By
780
Net Change
+1826
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10762
5K → 10K285216+69#10762#10693
10K → 15K207121+86#10693#10607
15K → 20K37029+341#10607#10266
20K → Half833+80#10266#10186
Half → 25K254*52+202#10186#9984
25K → 30K43456+378#9984#9606
30K → 20M20816+192#9606#9414
20M → 21M11957+62#9414#9352
21M → 35K7743+34#9352#9318
35K → 23M17532+143#9318#9175
23M → 24M11835+83#9175#9092
24M → 40K11359+54#9092#9038
40K → 25.2M5717+40#9038#8998
25.2M → Finish10644+62#8998#8936
TOTALS2606*780+1826

* Includes athletes who did not complete a segment (DNF/DNQ).

Passing Charts

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