Boston Marathon logo
BOSTON MARATHON 2025

Yoonok Kim

Bib: 24561•F

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F55-59)
#0 / 994
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:41
Rank: #22048
Start → 5K
27:41 | 8:55/mi
10K· 6.21 mi
54:29
Rank: #21277 (+771)
5K → 10K
26:48 | 8:38/mi
15K· 9.32 mi
1:22:01
Rank: #21268 (+9)
10K → 15K
27:32 | 8:52/mi
20K· 12.43 mi
1:50:46
Rank: #21522 (-254)
15K → 20K
28:45 | 9:15/mi
Half· 13.11 mi
1:57:00
Rank: #21585 (-63)
20K → Half
6:14 | 9:08/mi
25K· 15.53 mi
2:20:12
Rank: #21672 (-87)
Half → 25K
23:12 | 9:34/mi
30K· 18.64 mi
2:51:17
Rank: #21701 (-29)
25K → 30K
31:05 | 10:00/mi
20M
3:07:14
Rank: #22124 (-423)
30K → 20M
15:57 | 11:44/mi
21M
3:17:36
Rank: #21941 (+183)
20M → 21M
10:22 | 10:22/mi
35K· 21.75 mi
3:25:22
Rank: #21981 (-40)
21M → 35K
7:46 | 10:23/mi
23M
3:38:40
Rank: #21977 (+4)
35K → 23M
13:18 | 10:37/mi
24M
3:48:39
Rank: #21940 (+37)
23M → 24M
9:59 | 9:59/mi
40K· 24.85 mi
3:56:45
Rank: #21822 (+118)
24M → 40K
8:06 | 9:28/mi
25.2M
4:00:19
Rank: #21765 (+57)
40K → 25.2M
3:34 | 10:21/mi
Finish· 26.22 mi
4:09:40
Rank: #21696 (+69)
25.2M → Finish
9:21 | 9:11/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
Time1:57:00
Pace8:55 /mi
2nd Half
Distance13.11 mi
Time2:12:40
Pace10:07 /mi
📊Positive Split: 13.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:27:3627:418:5527:41
8:55
-
10K
6.21 mi11:54:2454:298:4626:48
8:38
-0:17
15K
9.32 mi12:21:561:22:018:4827:32
8:52
+0:14
20K
12.43 mi12:50:411:50:468:5528:45
9:15
+0:23
Half
13.11 mi12:56:551:57:008:556:14
9:08
-0:07
25K
15.53 mi13:20:072:20:129:0223:12
9:34
+0:26
30K
18.64 mi13:51:122:51:179:1131:05
10:00
+0:26
20M
20.00 mi14:07:093:07:149:2215:57
11:44
+1:44
21M
21.00 mi14:17:313:17:369:2510:22
10:22
-1:22
35K
21.75 mi14:25:173:25:229:277:46
10:23
+0:01
23M
23.00 mi14:38:353:38:409:3013:18
10:37
+0:14
24M
24.00 mi14:48:343:48:399:329:59
9:59
-0:38
40K
24.85 mi14:56:403:56:459:328:06
9:28
-0:31
25.2M
25.20 mi15:00:144:00:199:323:34
10:21
+0:53
Finish
26.22 mi15:09:354:09:409:329:21
9:11
-1:10

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

8:38 /mi

Average Pace

9:32 /mi

Slowest Pace

11:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:28:15

35% of race

Time at Steady Pace

1:09:24

28% of race

Time at Slower Pace

1:32:01

37% of race

Average Pace: 9:31 /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 mi11:27:3627:418:5527:41
8:55
#22048
10K
6.21 mi11:54:2454:298:4626:48
8:38
#21277
15K
9.32 mi12:21:561:22:018:4827:32
8:52
#21268
20K
12.43 mi12:50:411:50:468:5528:45
9:15
#21522
Half
13.11 mi12:56:551:57:008:556:14
9:08
#21585
25K
15.53 mi13:20:072:20:129:0223:12
9:34
#21672
30K
18.64 mi13:51:122:51:179:1131:05
10:00
#21701
20M
20.00 mi14:07:093:07:149:2215:57
11:44
#22124
21M
21.00 mi14:17:313:17:369:2510:22
10:22
#21941
35K
21.75 mi14:25:173:25:229:277:46
10:23
#21981
23M
23.00 mi14:38:353:38:409:3013:18
10:37
#21977
24M
24.00 mi14:48:343:48:399:329:59
9:59
#21940
40K
24.85 mi14:56:403:56:459:328:06
9:28
#21822
25.2M
25.20 mi15:00:144:00:199:323:34
10:21
#21765
Finish
26.22 mi15:09:354:09:409:329:21
9:11
#21696
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi220488654865421365(Top 75%)8200(Top 67%)8200(Top 825%)
10K6.21 mi3.10 mi21277+7718203+4518203+45120497(Top 72%)7744(Top 63%)7744(Top 779%)
15K9.32 mi3.11 mi21268+98185+188185+1821365(Top 75%)8200(Top 67%)8200(Top 825%)
20K12.43 mi3.11 mi21522-2548325-1408325-14022104(Top 78%)8645(Top 71%)8645(Top 870%)
Half13.11 mi0.68 mi21585-638374-498374-4922397(Top 79%)8827(Top 72%)8827(Top 888%)
25K15.53 mi2.42 mi21672-878424-508424-5022093(Top 78%)8704(Top 71%)8704(Top 876%)
30K18.64 mi3.11 mi21701-298458-348458-3421618(Top 76%)8567(Top 70%)8567(Top 862%)
20M20.00 mi1.36 mi22124-4238708-2508708-25024903(Top 88%)10420(Top 85%)10420(Top 1048%)
21M21.00 mi1.00 mi21941+1838633+758633+7519621(Top 69%)7698(Top 63%)7698(Top 774%)
35K21.75 mi0.75 mi21981-408672-398672-3922911(Top 81%)9505(Top 78%)9505(Top 956%)
23M23.00 mi1.25 mi21977+48701-298701-2922341(Top 79%)9248(Top 76%)9248(Top 930%)
24M24.00 mi1.00 mi21940+378707-68707-621340(Top 75%)8774(Top 72%)8774(Top 883%)
40K24.85 mi0.85 mi21822+1188664+438664+4318645(Top 66%)7461(Top 61%)7461(Top 751%)
25.2M25.20 mi0.35 mi21765+578637+278637+2718518(Top 65%)7407(Top 61%)7407(Top 745%)
Finish26.22 mi1.02 mi21696+698613+248613+2419873(Top 70%)8083(Top 66%)8083(Top 813%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21stories
+97ft-345ft

Overall

21365

Females

8200

F55-59

8200

5K→10K

3.1 - 6.2 mi

Top 72%
×5stories
+79ft-138ft

Overall

20497

Females

7744

F55-59

7744

10K→15K

6.2 - 9.3 mi

Top 75%
×3stories
+67ft-78ft

Overall

21365

Females

8200

F55-59

8200

15K→20K

9.3 - 12.4 mi

Top 78%
×5stories
+106ft-86ft

Overall

22104

Females

8645

F55-59

8645

20K→Half

12.4 - 13.1 mi

Top 79%
×2stories
+19ft-37ft

Overall

22397

Females

8827

F55-59

8827

Half→25K

13.1 - 15.5 mi

Top 78%
×4stories
+66ft-88ft

Overall

22093

Females

8704

F55-59

8704

25K→30K

15.5 - 18.6 mi

Top 76%
×9stories
+181ft-148ft

Overall

21618

Females

8567

F55-59

8567

30K→20M

18.6 - 20.0 mi

Top 88%
×5stories
+64ft-50ft

Overall

24903

Females

10420

F55-59

10420

20M→21M

20.0 - 21.0 mi

Top 69%
×8stories
+106ft-24ft

Overall

19621

Females

7698

F55-59

7698

21M→35K

21.0 - 21.8 mi

Top 81%
×7stories
+17ft-86ft

Overall

22911

Females

9505

F55-59

9505

35K→23M

21.8 - 23.0 mi

Top 79%
×5stories
+23ft-63ft

Overall

22341

Females

9248

F55-59

9248

23M→24M

23.0 - 24.0 mi

Top 75%
×6stories
+12ft-82ft

Overall

21340

Females

8774

F55-59

8774

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

18645

Females

7461

F55-59

7461

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

18518

Females

7407

F55-59

7407

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2stories
+22ft-21ft

Overall

19873

Females

8083

F55-59

8083

Passing Analysis

Category:
Athletes Passed
2150
Passed By
1798
Net Change
+352
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22048
5K → 10K81948+771#22048#21277
10K → 15K218209+9#21277#21268
15K → 20K122376-254#21268#21522
20K → Half1780-63#21522#21585
Half → 25K122209-87#21585#21672
25K → 30K187216-29#21672#21701
30K → 20M20443-423#21701#22124
20M → 21M1929+183#22124#21941
21M → 35K2868-40#21941#21981
35K → 23M8177+4#21981#21977
23M → 24M7437+37#21977#21940
24M → 40K1235+118#21940#21822
40K → 25.2M592+57#21822#21765
25.2M → Finish8819+69#21765#21696
TOTALS21501798+352
📊

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