Boston Marathon logo
BOSTON MARATHON 2025

Alyssa Kim

Bib: 22222•F

PA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 39%
Masters (Masters Women)
#0 / 6759
Top 25%
Division (F50-54)
#0 / 1303
Top 16%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:12
Rank: #17440
Start → 5K
25:12 | 8:07/mi
10K· 6.21 mi
50:14
Rank: #17160 (+280)
5K → 10K
25:02 | 8:03/mi
15K· 9.32 mi
1:15:29
Rank: #17069 (+91)
10K → 15K
25:15 | 8:08/mi
20K· 12.43 mi
1:41:03
Rank: #16906 (+163)
15K → 20K
25:34 | 8:14/mi
Half· 13.11 mi
1:46:29
Rank: #16835 (+71)
20K → Half
5:26 | 7:58/mi
25K· 15.53 mi
2:06:11
Rank: #16478 (+357)
Half → 25K
19:42 | 8:08/mi
30K· 18.64 mi
2:32:28
Rank: #16080 (+398)
25K → 30K
26:17 | 8:28/mi
20M
2:44:32
Rank: #16058 (+22)
30K → 20M
12:04 | 8:53/mi
21M
2:53:37
Rank: #15858 (+200)
20M → 21M
9:05 | 9:05/mi
35K· 21.75 mi
2:59:43
Rank: #15749 (+109)
21M → 35K
6:06 | 8:09/mi
23M
3:10:03
Rank: #15477 (+272)
35K → 23M
10:20 | 8:15/mi
24M
3:18:02
Rank: #15267 (+210)
23M → 24M
7:59 | 7:59/mi
40K· 24.85 mi
3:24:59
Rank: #15091 (+176)
24M → 40K
6:57 | 8:08/mi
25.2M
3:28:03
Rank: #14999 (+92)
40K → 25.2M
3:04 | 8:54/mi
Finish· 26.22 mi
3:36:09
Rank: #14875 (+124)
25.2M → Finish
8:06 | 7:57/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
Time1:46:29
Pace8:07 /mi
2nd Half
Distance13.11 mi
Time1:49:40
Pace8:22 /mi
📊Positive Split: 3.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:3425:128:0725:12
8:07
-
10K
6.21 mi11:46:3650:148:0525:02
8:03
-0:04
15K
9.32 mi12:11:511:15:298:0625:15
8:08
+0:05
20K
12.43 mi12:37:251:41:038:0825:34
8:14
+0:06
Half
13.11 mi12:42:511:46:298:075:26
7:58
-0:16
25K
15.53 mi13:02:332:06:118:0719:42
8:08
+0:10
30K
18.64 mi13:28:502:32:288:1126:17
8:28
+0:20
20M
20.00 mi13:40:542:44:328:1412:04
8:53
+0:25
21M
21.00 mi13:49:592:53:378:169:05
9:05
+0:12
35K
21.75 mi13:56:052:59:438:166:06
8:09
-0:56
23M
23.00 mi14:06:253:10:038:1610:20
8:15
+0:06
24M
24.00 mi14:14:243:18:028:157:59
7:59
-0:16
40K
24.85 mi14:21:213:24:598:156:57
8:08
+0:09
25.2M
25.20 mi14:24:253:28:038:153:04
8:54
+0:46
Finish
26.22 mi14:32:313:36:098:158:06
7:57
-0:57

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

7:57 /mi

Average Pace

8:15 /mi

Slowest Pace

9:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:11:56

89% of race

Time at Steady Pace

24:13

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:15 /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 mi11:21:3425:128:0725:12
8:07
#17440
10K
6.21 mi11:46:3650:148:0525:02
8:03
#17160
15K
9.32 mi12:11:511:15:298:0625:15
8:08
#17069
20K
12.43 mi12:37:251:41:038:0825:34
8:14
#16906
Half
13.11 mi12:42:511:46:298:075:26
7:58
#16835
25K
15.53 mi13:02:332:06:118:0719:42
8:08
#16478
30K
18.64 mi13:28:502:32:288:1126:17
8:28
#16080
20M
20.00 mi13:40:542:44:328:1412:04
8:53
#16058
21M
21.00 mi13:49:592:53:378:169:05
9:05
#15858
35K
21.75 mi13:56:052:59:438:166:06
8:09
#15749
23M
23.00 mi14:06:253:10:038:1610:20
8:15
#15477
24M
24.00 mi14:14:243:18:028:157:59
7:59
#15267
40K
24.85 mi14:21:213:24:598:156:57
8:08
#15091
25.2M
25.20 mi14:24:253:28:038:153:04
8:54
#14999
Finish
26.22 mi14:32:313:36:098:158:06
7:57
#14875
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi174405995599516928(Top 60%)5689(Top 47%)5689(Top 437%)
10K6.21 mi3.10 mi17160+2805820+1755820+17516899(Top 59%)5644(Top 46%)5644(Top 433%)
15K9.32 mi3.11 mi17069+915755+655755+6516928(Top 60%)5689(Top 47%)5689(Top 437%)
20K12.43 mi3.11 mi16906+1635682+735682+7316492(Top 58%)5481(Top 45%)5481(Top 421%)
Half13.11 mi0.68 mi16835+715630+525630+5215658(Top 55%)4978(Top 41%)4978(Top 382%)
25K15.53 mi2.42 mi16478+3575448+1825448+18214812(Top 52%)4651(Top 38%)4651(Top 357%)
30K18.64 mi3.11 mi16080+3985270+1785270+17814519(Top 51%)4638(Top 38%)4638(Top 356%)
20M20.00 mi1.36 mi16058+225300-305300-3016116(Top 57%)5658(Top 46%)5658(Top 434%)
21M21.00 mi1.00 mi15858+2005223+775223+7714030(Top 49%)4652(Top 38%)4652(Top 357%)
35K21.75 mi0.75 mi15749+1095183+405183+4013354(Top 47%)4353(Top 36%)4353(Top 334%)
23M23.00 mi1.25 mi15477+2725060+1235060+12311767(Top 41%)3627(Top 30%)3627(Top 278%)
24M24.00 mi1.00 mi15267+2104959+1014959+10111181(Top 39%)3413(Top 28%)3413(Top 262%)
40K24.85 mi0.85 mi15091+1764892+674892+6711145(Top 39%)3490(Top 29%)3490(Top 268%)
25.2M25.20 mi0.35 mi14999+924849+434849+4311296(Top 40%)3670(Top 30%)3670(Top 282%)
Finish26.22 mi1.02 mi14875+1244802+474802+4712577(Top 44%)4234(Top 35%)4234(Top 325%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21stories
+97ft-345ft

Overall

16928

Females

5689

F50-54

5689

5K→10K

3.1 - 6.2 mi

Top 59%
×5stories
+79ft-138ft

Overall

16899

Females

5644

F50-54

5644

10K→15K

6.2 - 9.3 mi

Top 60%
×3stories
+67ft-78ft

Overall

16928

Females

5689

F50-54

5689

15K→20K

9.3 - 12.4 mi

Top 58%
×5stories
+106ft-86ft

Overall

16492

Females

5481

F50-54

5481

20K→Half

12.4 - 13.1 mi

Top 55%
×2stories
+19ft-37ft

Overall

15658

Females

4978

F50-54

4978

Half→25K

13.1 - 15.5 mi

Top 52%
×4stories
+66ft-88ft

Overall

14812

Females

4651

F50-54

4651

25K→30K

15.5 - 18.6 mi

Top 51%
×9stories
+181ft-148ft

Overall

14519

Females

4638

F50-54

4638

30K→20M

18.6 - 20.0 mi

Top 57%
×5stories
+64ft-50ft

Overall

16116

Females

5658

F50-54

5658

20M→21M

20.0 - 21.0 mi

Top 49%
×8stories
+106ft-24ft

Overall

14030

Females

4652

F50-54

4652

21M→35K

21.0 - 21.8 mi

Top 47%
×7stories
+17ft-86ft

Overall

13354

Females

4353

F50-54

4353

35K→23M

21.8 - 23.0 mi

Top 41%
×5stories
+23ft-63ft

Overall

11767

Females

3627

F50-54

3627

23M→24M

23.0 - 24.0 mi

Top 39%
×6stories
+12ft-82ft

Overall

11181

Females

3413

F50-54

3413

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

11145

Females

3490

F50-54

3490

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1story
+13ft-16ft

Overall

11296

Females

3670

F50-54

3670

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2stories
+22ft-21ft

Overall

12577

Females

4234

F50-54

4234

Passing Analysis

Category:
Athletes Passed
3249
Passed By
684
Net Change
+2565
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17440
5K → 10K452172+280#17440#17160
10K → 15K245154+91#17160#17069
15K → 20K265102+163#17069#16906
20K → Half809+71#16906#16835
Half → 25K37114+357#16835#16478
25K → 30K45052+398#16478#16080
30K → 20M125103+22#16080#16058
20M → 21M22323+200#16058#15858
21M → 35K12213+109#15858#15749
35K → 23M2808+272#15749#15477
23M → 24M2133+210#15477#15267
24M → 40K1826+176#15267#15091
40K → 25.2M953+92#15091#14999
25.2M → Finish14622+124#14999#14875
TOTALS3249684+2565
📊

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