Boston Marathon logo
BOSTON MARATHON 2025

Jennifer Morrison

Bib: 18726•F

AB

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
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
8:22/mi
25:59
↑ 97↓ 3451.5%
10K· 6.21 mi
8:20/mi
51:53
↑ 79↓ 1380.4%
15K· 9.32 mi
8:31/mi
1:18:22
↑ 67↓ 78
20K· 12.43 mi
8:46/mi
1:45:35
↑ 106↓ 860.1%
Half· 13.11 mi
8:21/mi
1:51:17
↑ 19↓ 370.5%
25K· 15.53 mi
8:42/mi
2:12:23
↑ 66↓ 880.2%
30K· 18.64 mi
9:05/mi
2:40:37
↑ 181↓ 1480.2%
20M
9:02/mi
2:52:54
↑ 64↓ 500.2%
21M
10:00/mi
3:02:54
↑ 106↓ 241.6%
35K· 21.75 mi
9:21/mi
3:09:54
↑ 17↓ 861.7%
23M
8:59/mi
3:21:09
↑ 23↓ 630.6%
24M
9:04/mi
3:30:13
↓ 821.3%
40K· 24.85 mi
8:53/mi
3:37:49
↓ 200.3%
25.2M
9:37/mi
3:41:08
↑ 13↓ 160.2%
Finish· 26.22 mi
8:25/mi
3:49:43
↑ 22↓ 21

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:17
Pace8:29 /mi
2nd Half
Distance13.11 mi
Time1:58:26
Pace9:02 /mi
📊Positive Split: 6.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:0525:598:2225:59
8:22
-
10K
6.21 mi11:44:5951:538:2125:54
8:20
-0:02
15K
9.32 mi12:11:281:18:228:2426:29
8:31
+0:11
20K
12.43 mi12:38:411:45:358:3027:13
8:46
+0:15
Half
13.11 mi12:44:231:51:178:295:42
8:21
-0:25
25K
15.53 mi13:05:292:12:238:3121:06
8:42
+0:21
30K
18.64 mi13:33:432:40:378:3728:14
9:05
+0:23
20M
20.00 mi13:46:002:52:548:3912:17
9:02
-0:03
21M
21.00 mi13:56:003:02:548:4310:00
10:00
+0:58
35K
21.75 mi14:03:003:09:548:447:00
9:21
-0:39
23M
23.00 mi14:14:153:21:098:4511:15
8:59
-0:22
24M
24.00 mi14:23:193:30:138:469:04
9:04
+0:05
40K
24.85 mi14:30:553:37:498:467:36
8:53
-0:11
25.2M
25.20 mi14:34:143:41:088:473:19
9:37
+0:44
Finish
26.22 mi14:42:493:49:438:468:35
8:25
-1:12

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

8:20 /mi

Average Pace

8:46 /mi

Slowest Pace

10:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:29:24

91% of race

Time at Steady Pace

10:19

4% of race

Time at Slower Pace

10:00

4% of race

Average Pace: 8:46 /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 mi11:19:0525:598:2225:59
8:22
#19101
10K
6.21 mi11:44:5951:538:2125:54
8:20
#18928
15K
9.32 mi12:11:281:18:228:2426:29
8:31
#19076
20K
12.43 mi12:38:411:45:358:3027:13
8:46
#19238
Half
13.11 mi12:44:231:51:178:295:42
8:21
#19194
25K
15.53 mi13:05:292:12:238:3121:06
8:42
#19046
30K
18.64 mi13:33:432:40:378:3728:14
9:05
#18852
20M
20.00 mi13:46:002:52:548:3912:17
9:02
#18690
21M
21.00 mi13:56:003:02:548:4310:00
10:00
#18674
35K
21.75 mi14:03:003:09:548:447:00
9:21
#18714
23M
23.00 mi14:14:153:21:098:4511:15
8:59
#18554
24M
24.00 mi14:23:193:30:138:469:04
9:04
#18520
40K
24.85 mi14:30:553:37:498:467:36
8:53
#18392
25.2M
25.20 mi14:34:143:41:088:473:19
9:37
#18347
Finish
26.22 mi14:42:493:49:438:468:35
8:25
#18257
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi191016962696219478(Top 69%)7157(Top 59%)7157(Top 131%)
10K6.21 mi3.10 mi18928+1736863+996863+9918798(Top 66%)6762(Top 55%)6762(Top 124%)
15K9.32 mi3.11 mi19076-1486952-896952-8919478(Top 69%)7157(Top 59%)7157(Top 131%)
20K12.43 mi3.11 mi19238-1627041-897041-8919739(Top 69%)7336(Top 60%)7336(Top 134%)
Half13.11 mi0.68 mi19194+447022+197022+1918371(Top 65%)6548(Top 54%)6548(Top 120%)
25K15.53 mi2.42 mi19046+1486945+776945+7718410(Top 65%)6658(Top 54%)6658(Top 122%)
30K18.64 mi3.11 mi18852+1946860+856860+8518137(Top 64%)6655(Top 54%)6655(Top 122%)
20M20.00 mi1.36 mi18690+1626796+646796+6417034(Top 60%)6156(Top 50%)6156(Top 113%)
21M21.00 mi1.00 mi18674+166818-226818-2218300(Top 64%)6947(Top 57%)6947(Top 127%)
35K21.75 mi0.75 mi18714-406857-396857-3919805(Top 70%)7871(Top 64%)7871(Top 144%)
23M23.00 mi1.25 mi18554+1606796+616796+6116196(Top 57%)5998(Top 49%)5998(Top 110%)
24M24.00 mi1.00 mi18520+346806-106806-1017719(Top 62%)6885(Top 56%)6885(Top 126%)
40K24.85 mi0.85 mi18392+1286763+436763+4315736(Top 55%)5920(Top 48%)5920(Top 108%)
25.2M25.20 mi0.35 mi18347+456754+96754+915275(Top 54%)5716(Top 47%)5716(Top 105%)
Finish26.22 mi1.02 mi18257+906721+336721+3315771(Top 56%)5903(Top 48%)5903(Top 108%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21story building
+97ft-345ft

Overall

19478

Females

7157

F18-39

7157

5K→10K

3.1 - 6.2 mi

Top 66%
×5story building
+79ft-138ft

Overall

18798

Females

6762

F18-39

6762

10K→15K

6.2 - 9.3 mi

Top 69%
×3story building
+67ft-78ft

Overall

19478

Females

7157

F18-39

7157

15K→20K

9.3 - 12.4 mi

Top 69%
×5story building
+106ft-86ft

Overall

19739

Females

7336

F18-39

7336

20K→Half

12.4 - 13.1 mi

Top 65%
×2story building
+19ft-37ft

Overall

18371

Females

6548

F18-39

6548

Half→25K

13.1 - 15.5 mi

Top 65%
×4story building
+66ft-88ft

Overall

18410

Females

6658

F18-39

6658

25K→30K

15.5 - 18.6 mi

Top 64%
×9story building
+181ft-148ft

Overall

18137

Females

6655

F18-39

6655

30K→20M

18.6 - 20.0 mi

Top 60%
×5story building
+64ft-50ft

Overall

17034

Females

6156

F18-39

6156

20M→21M

20.0 - 21.0 mi

Top 64%
×8story building
+106ft-24ft

Overall

18300

Females

6947

F18-39

6947

21M→35K

21.0 - 21.8 mi

Top 70%
×7story building
+17ft-86ft

Overall

19805

Females

7871

F18-39

7871

35K→23M

21.8 - 23.0 mi

Top 57%
×5story building
+23ft-63ft

Overall

16196

Females

5998

F18-39

5998

23M→24M

23.0 - 24.0 mi

Top 62%
×6story building
+12ft-82ft

Overall

17719

Females

6885

F18-39

6885

24M→40K

24.0 - 24.9 mi

Top 55%
×1story
+6ft-20ft

Overall

15736

Females

5920

F18-39

5920

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

15275

Females

5716

F18-39

5716

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2story building
+22ft-21ft

Overall

15771

Females

5903

F18-39

5903

Passing Analysis

Category:
Athletes Passed
2194
Passed By
1350
Net Change
+844
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19101
5K → 10K354181+173#19101#18928
10K → 15K150298-148#18928#19076
15K → 20K146308-162#19076#19238
20K → Half5915+44#19238#19194
Half → 25K23385+148#19194#19046
25K → 30K325131+194#19046#18852
30K → 20M18927+162#18852#18690
20M → 21M10589+16#18690#18674
21M → 35K4787-40#18674#18714
35K → 23M18828+160#18714#18554
23M → 24M9056+34#18554#18520
24M → 40K14416+128#18520#18392
40K → 25.2M505+45#18392#18347
25.2M → Finish11424+90#18347#18257
TOTALS21941350+844
📊

Passing Visuals

Category:
Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing