Boston Marathon logo
BOSTON MARATHON 2025

Sharon Kim

Bib: 24621•F

CA

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

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
9:11/mi
28:31
↑ 97↓ 3451.5%
10K· 6.21 mi
8:44/mi
55:39
↑ 79↓ 1380.4%
15K· 9.32 mi
9:10/mi
1:24:07
↑ 67↓ 78
20K· 12.43 mi
10:27/mi
1:56:36
↑ 106↓ 860.1%
Half· 13.11 mi
8:51/mi
2:02:38
↑ 19↓ 370.5%
25K· 15.53 mi
11:25/mi
2:30:18
↑ 66↓ 880.2%
30K· 18.64 mi
10:14/mi
3:02:06
↑ 181↓ 1480.2%
20M
10:43/mi
3:16:40
↑ 64↓ 500.2%
21M
11:21/mi
3:28:01
↑ 106↓ 241.6%
35K· 21.75 mi
10:23/mi
3:35:47
↑ 17↓ 861.7%
23M
11:59/mi
3:50:47
↑ 23↓ 630.6%
24M
10:13/mi
4:01:00
↓ 821.3%
40K· 24.85 mi
10:47/mi
4:10:13
↓ 200.3%
25.2M
10:52/mi
4:13:58
↑ 13↓ 160.2%
Finish· 26.22 mi
8:41/mi
4:22:49
↑ 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
Time2:02:38
Pace9:21 /mi
2nd Half
Distance13.11 mi
Time2:20:11
Pace10:42 /mi
📊Positive Split: 14.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:29:2328:319:1128:31
9:11
-
10K
6.21 mi11:56:3155:398:5727:08
8:44
-0:27
15K
9.32 mi12:24:591:24:079:0128:28
9:10
+0:26
20K
12.43 mi12:57:281:56:369:2332:29
10:27
+1:17
Half
13.11 mi13:03:302:02:389:216:02
8:51
-1:36
25K
15.53 mi13:31:102:30:189:4127:40
11:25
+2:34
30K
18.64 mi14:02:583:02:069:4631:48
10:14
-1:11
20M
20.00 mi14:17:323:16:409:5014:34
10:43
+0:29
21M
21.00 mi14:28:533:28:019:5411:21
11:21
+0:38
35K
21.75 mi14:36:393:35:479:557:46
10:23
-0:58
23M
23.00 mi14:51:393:50:4710:0215:00
11:59
+1:36
24M
24.00 mi15:01:524:01:0010:0310:13
10:13
-1:46
40K
24.85 mi15:11:054:10:1310:049:13
10:47
+0:34
25.2M
25.20 mi15:14:504:13:5810:053:45
10:52
+0:05
Finish
26.22 mi15:23:414:22:4910:028:51
8:41
-2:11

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

8:41 /mi

Average Pace

10:02 /mi

Slowest Pace

11:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:00

38% of race

Time at Steady Pace

1:49:48

42% of race

Time at Slower Pace

54:01

21% of race

Average Pace: 10:01 /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 mi11:29:2328:319:1128:31
9:11
#23159
10K
6.21 mi11:56:3155:398:5727:08
8:44
#22243
15K
9.32 mi12:24:591:24:079:0128:28
9:10
#22393
20K
12.43 mi12:57:281:56:369:2332:29
10:27
#23403
Half
13.11 mi13:03:302:02:389:216:02
8:51
#23294
25K
15.53 mi13:31:102:30:189:4127:40
11:25
#23919
30K
18.64 mi14:02:583:02:069:4631:48
10:14
#23590
20M
20.00 mi14:17:323:16:409:5014:34
10:43
#23526
21M
21.00 mi14:28:533:28:019:5411:21
11:21
#23455
35K
21.75 mi14:36:393:35:479:557:46
10:23
#23411
23M
23.00 mi14:51:393:50:4710:0215:00
11:59
#23558
24M
24.00 mi15:01:524:01:0010:0310:13
10:13
#23484
40K
24.85 mi15:11:054:10:1310:049:13
10:47
#23465
25.2M
25.20 mi15:14:504:13:5810:053:45
10:52
#23400
Finish
26.22 mi15:23:414:22:4910:028:51
8:41
#23249
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi231599254925422731(Top 80%)8964(Top 73%)8964(Top 902%)
10K6.21 mi3.10 mi22243+9168754+5008754+50021089(Top 74%)8072(Top 66%)8072(Top 812%)
15K9.32 mi3.11 mi22393-1508803-498803-4922731(Top 80%)8964(Top 73%)8964(Top 902%)
20K12.43 mi3.11 mi23403-10109343-5409343-54025120(Top 88%)10327(Top 84%)10327(Top 1039%)
Half13.11 mi0.68 mi23294+1099282+619282+6121171(Top 75%)8142(Top 67%)8142(Top 819%)
25K15.53 mi2.42 mi23919-6259653-3719653-37125753(Top 91%)10724(Top 88%)10724(Top 1079%)
30K18.64 mi3.11 mi23590+3299505+1489505+14822279(Top 78%)8929(Top 73%)8929(Top 898%)
20M20.00 mi1.36 mi23526+649493+129493+1223005(Top 81%)9424(Top 77%)9424(Top 948%)
21M21.00 mi1.00 mi23455+719477+169477+1622284(Top 78%)9127(Top 75%)9127(Top 918%)
35K21.75 mi0.75 mi23411+449463+149463+1422922(Top 81%)9516(Top 78%)9516(Top 957%)
23M23.00 mi1.25 mi23558-1479557-949557-9425095(Top 88%)10652(Top 87%)10652(Top 1072%)
24M24.00 mi1.00 mi23484+749530+279530+2722003(Top 77%)9139(Top 75%)9139(Top 919%)
40K24.85 mi0.85 mi23465+199535-59535-522649(Top 80%)9526(Top 78%)9526(Top 958%)
25.2M25.20 mi0.35 mi23400+659515+209515+2020311(Top 72%)8331(Top 68%)8331(Top 838%)
Finish26.22 mi1.02 mi23249+1519451+649451+6417434(Top 61%)6790(Top 56%)6790(Top 683%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×21story building
+97ft-345ft

Overall

22731

Females

8964

F55-59

8964

5K→10K

3.1 - 6.2 mi

Top 74%
×5story building
+79ft-138ft

Overall

21089

Females

8072

F55-59

8072

10K→15K

6.2 - 9.3 mi

Top 80%
×3story building
+67ft-78ft

Overall

22731

Females

8964

F55-59

8964

15K→20K

9.3 - 12.4 mi

Top 88%
×5story building
+106ft-86ft

Overall

25120

Females

10327

F55-59

10327

20K→Half

12.4 - 13.1 mi

Top 75%
×2story building
+19ft-37ft

Overall

21171

Females

8142

F55-59

8142

Half→25K

13.1 - 15.5 mi

Top 91%
×4story building
+66ft-88ft

Overall

25753

Females

10724

F55-59

10724

25K→30K

15.5 - 18.6 mi

Top 78%
×9story building
+181ft-148ft

Overall

22279

Females

8929

F55-59

8929

30K→20M

18.6 - 20.0 mi

Top 81%
×5story building
+64ft-50ft

Overall

23005

Females

9424

F55-59

9424

20M→21M

20.0 - 21.0 mi

Top 78%
×8story building
+106ft-24ft

Overall

22284

Females

9127

F55-59

9127

21M→35K

21.0 - 21.8 mi

Top 81%
×7story building
+17ft-86ft

Overall

22922

Females

9516

F55-59

9516

35K→23M

21.8 - 23.0 mi

Top 88%
×5story building
+23ft-63ft

Overall

25095

Females

10652

F55-59

10652

23M→24M

23.0 - 24.0 mi

Top 77%
×6story building
+12ft-82ft

Overall

22003

Females

9139

F55-59

9139

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

22649

Females

9526

F55-59

9526

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

20311

Females

8331

F55-59

8331

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2story building
+22ft-21ft

Overall

17434

Females

6790

F55-59

6790

Passing Analysis

Category:
Athletes Passed
2268
Passed By
2358
Net Change
-90
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23159
5K → 10K94024+916#23159#22243
10K → 15K132282-150#22243#22393
15K → 20K251035-1010#22393#23403
20K → Half1112+109#23403#23294
Half → 25K23648-625#23294#23919
25K → 30K34617+329#23919#23590
30K → 20M10945+64#23590#23526
20M → 21M11039+71#23526#23455
21M → 35K7329+44#23455#23411
35K → 23M34181-147#23411#23558
23M → 24M8612+74#23558#23484
24M → 40K5839+19#23484#23465
40K → 25.2M672+65#23465#23400
25.2M → Finish1543+151#23400#23249
TOTALS22682358-90
📊

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