Boston Marathon logo
BOSTON MARATHON 2025

Summer Enser

Bib: 21156•F

WA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Top 47%
Gender (Female)
#0 / 12228
Top 32%
Masters (Masters Women)
#0 / 6759
Top 17%
Division (F45-49)
#0 / 1813
Top 19%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:23
Rank: #15245
Start → 5K
24:23 | 7:51/mi
10K· 6.21 mi
48:38
Rank: #15022 (+223)
5K → 10K
24:15 | 7:48/mi
15K· 9.32 mi
1:12:36
Rank: #14529 (+493)
10K → 15K
23:58 | 7:43/mi
20K· 12.43 mi
1:38:07
Rank: #15060 (-531)
15K → 20K
25:31 | 8:13/mi
Half· 13.11 mi
1:43:27
Rank: #15010 (+50)
20K → Half
5:20 | 7:49/mi
25K· 15.53 mi
2:02:54
Rank: #14821 (+189)
Half → 25K
19:27 | 8:01/mi
30K· 18.64 mi
2:28:45
Rank: #14531 (+290)
25K → 30K
25:51 | 8:19/mi
20M
2:40:08
Rank: #14382 (+149)
30K → 20M
11:23 | 8:23/mi
21M
2:48:55
Rank: #14216 (+166)
20M → 21M
8:47 | 8:47/mi
35K· 21.75 mi
2:54:49
Rank: #14078 (+138)
21M → 35K
5:54 | 7:53/mi
23M
3:05:06
Rank: #13907 (+171)
35K → 23M
10:17 | 8:13/mi
24M
3:12:57
Rank: #13719 (+188)
23M → 24M
7:51 | 7:51/mi
40K· 24.85 mi
3:19:42
Rank: #13518 (+201)
24M → 40K
6:45 | 7:54/mi
25.2M
3:22:37
Rank: #13419 (+99)
40K → 25.2M
2:55 | 8:27/mi
Finish· 26.22 mi
3:30:07
Rank: #13250 (+169)
25.2M → Finish
7:30 | 7:22/mi

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
Time1:43:27
Pace7:53 /mi
2nd Half
Distance13.11 mi
Time1:46:40
Pace8:08 /mi
📊Positive Split: 3.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:0924:237:5124:23
7:51
-
10K
6.21 mi11:43:2448:387:5024:15
7:48
-0:03
15K
9.32 mi12:07:221:12:367:4723:58
7:43
-0:05
20K
12.43 mi12:32:531:38:077:5425:31
8:13
+0:30
Half
13.11 mi12:38:131:43:277:535:20
7:49
-0:24
25K
15.53 mi12:57:402:02:547:5519:27
8:01
+0:12
30K
18.64 mi13:23:312:28:457:5925:51
8:19
+0:18
20M
20.00 mi13:34:542:40:088:0011:23
8:23
+0:04
21M
21.00 mi13:43:412:48:558:038:47
8:47
+0:24
35K
21.75 mi13:49:352:54:498:025:54
7:53
-0:54
23M
23.00 mi13:59:523:05:068:0310:17
8:13
+0:20
24M
24.00 mi14:07:433:12:578:027:51
7:51
-0:22
40K
24.85 mi14:14:283:19:428:026:45
7:54
+0:03
25.2M
25.20 mi14:17:233:22:378:022:55
8:27
+0:33
Finish
26.22 mi14:24:533:30:078:017:30
7:22
-1:05

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

7:22 /mi

Average Pace

8:01 /mi

Slowest Pace

8:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:05:23

60% of race

Time at Steady Pace

1:15:57

36% of race

Time at Slower Pace

8:47

4% of race

Average Pace: 8:01 /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 mi11:19:0924:237:5124:23
7:51
#15245
10K
6.21 mi11:43:2448:387:5024:15
7:48
#15022
15K
9.32 mi12:07:221:12:367:4723:58
7:43
#14529
20K
12.43 mi12:32:531:38:077:5425:31
8:13
#15060
Half
13.11 mi12:38:131:43:277:535:20
7:49
#15010
25K
15.53 mi12:57:402:02:547:5519:27
8:01
#14821
30K
18.64 mi13:23:312:28:457:5925:51
8:19
#14531
20M
20.00 mi13:34:542:40:088:0011:23
8:23
#14382
21M
21.00 mi13:43:412:48:558:038:47
8:47
#14216
35K
21.75 mi13:49:352:54:498:025:54
7:53
#14078
23M
23.00 mi13:59:523:05:068:0310:17
8:13
#13907
24M
24.00 mi14:07:433:12:578:027:51
7:51
#13719
40K
24.85 mi14:14:283:19:428:026:45
7:54
#13518
25.2M
25.20 mi14:17:233:22:378:022:55
8:27
#13419
Finish
26.22 mi14:24:533:30:078:017:30
7:22
#13250
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi152454680468013654(Top 48%)3817(Top 31%)3817(Top 211%)
10K6.21 mi3.10 mi15022+2234562+1184562+11814876(Top 52%)4464(Top 37%)4464(Top 246%)
15K9.32 mi3.11 mi14529+4934276+2864276+28613654(Top 48%)3817(Top 31%)3817(Top 211%)
20K12.43 mi3.11 mi15060-5314617-3414617-34116382(Top 58%)5424(Top 44%)5424(Top 299%)
Half13.11 mi0.68 mi15010+504591+264591+2614436(Top 51%)4301(Top 35%)4301(Top 237%)
25K15.53 mi2.42 mi14821+1894517+744517+7414079(Top 50%)4239(Top 35%)4239(Top 234%)
30K18.64 mi3.11 mi14531+2904406+1114406+11113633(Top 48%)4162(Top 34%)4162(Top 230%)
20M20.00 mi1.36 mi14382+1494349+574349+5713010(Top 46%)3981(Top 33%)3981(Top 220%)
21M21.00 mi1.00 mi14216+1664276+734276+7312225(Top 43%)3722(Top 30%)3722(Top 205%)
35K21.75 mi0.75 mi14078+1384230+464230+4611521(Top 41%)3393(Top 28%)3393(Top 187%)
23M23.00 mi1.25 mi13907+1714168+624168+6211465(Top 40%)3468(Top 28%)3468(Top 191%)
24M24.00 mi1.00 mi13719+1884099+694099+6910244(Top 36%)2939(Top 24%)2939(Top 162%)
40K24.85 mi0.85 mi13518+2014009+904009+909491(Top 33%)2692(Top 22%)2692(Top 148%)
25.2M25.20 mi0.35 mi13419+993965+443965+448672(Top 31%)2385(Top 20%)2385(Top 132%)
Finish26.22 mi1.02 mi13250+1693897+683897+688253(Top 29%)2189(Top 18%)2189(Top 121%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21stories
+97ft-345ft

Overall

13654

Females

3817

F45-49

3817

5K→10K

3.1 - 6.2 mi

Top 52%
×5stories
+79ft-138ft

Overall

14876

Females

4464

F45-49

4464

10K→15K

6.2 - 9.3 mi

Top 48%
×3stories
+67ft-78ft

Overall

13654

Females

3817

F45-49

3817

15K→20K

9.3 - 12.4 mi

Top 58%
×5stories
+106ft-86ft

Overall

16382

Females

5424

F45-49

5424

20K→Half

12.4 - 13.1 mi

Top 51%
×2stories
+19ft-37ft

Overall

14436

Females

4301

F45-49

4301

Half→25K

13.1 - 15.5 mi

Top 50%
×4stories
+66ft-88ft

Overall

14079

Females

4239

F45-49

4239

25K→30K

15.5 - 18.6 mi

Top 48%
×9stories
+181ft-148ft

Overall

13633

Females

4162

F45-49

4162

30K→20M

18.6 - 20.0 mi

Top 46%
×5stories
+64ft-50ft

Overall

13010

Females

3981

F45-49

3981

20M→21M

20.0 - 21.0 mi

Top 43%
×8stories
+106ft-24ft

Overall

12225

Females

3722

F45-49

3722

21M→35K

21.0 - 21.8 mi

Top 41%
×7stories
+17ft-86ft

Overall

11521

Females

3393

F45-49

3393

35K→23M

21.8 - 23.0 mi

Top 40%
×5stories
+23ft-63ft

Overall

11465

Females

3468

F45-49

3468

23M→24M

23.0 - 24.0 mi

Top 36%
×6stories
+12ft-82ft

Overall

10244

Females

2939

F45-49

2939

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

9491

Females

2692

F45-49

2692

40K→25.2M

24.9 - 25.2 mi

Top 31%
×1story
+13ft-16ft

Overall

8672

Females

2385

F45-49

2385

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2stories
+22ft-21ft

Overall

8253

Females

2189

F45-49

2189

Passing Analysis

Category:
Athletes Passed
3180
Passed By
1185
Net Change
+1995
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15245
5K → 10K406183+223#15245#15022
10K → 15K53037+493#15022#14529
15K → 20K99630-531#14529#15060
20K → Half6313+50#15060#15010
Half → 25K25768+189#15010#14821
25K → 30K395105+290#14821#14531
30K → 20M20051+149#14531#14382
20M → 21M19630+166#14382#14216
21M → 35K1468+138#14216#14078
35K → 23M20837+171#14078#13907
23M → 24M19810+188#13907#13719
24M → 40K2054+201#13719#13518
40K → 25.2M1034+99#13518#13419
25.2M → Finish1745+169#13419#13250
TOTALS31801185+1995
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing