Boston Marathon logo
BOSTON MARATHON 2025

Yukiko Oba

Bib: 21561•F

MA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 48%
Masters (Masters Women)
#0 / 6759
Top 36%
Division (F55-59)
#0 / 994
Top 16%
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
8:01/mi
24:53
↑ 97↓ 3451.5%
10K· 6.21 mi
8:06/mi
50:03
↑ 79↓ 1380.4%
15K· 9.32 mi
8:06/mi
1:15:14
↑ 67↓ 78
20K· 12.43 mi
8:12/mi
1:40:42
↑ 106↓ 860.1%
Half· 13.11 mi
8:02/mi
1:46:11
↑ 19↓ 370.5%
25K· 15.53 mi
8:16/mi
2:06:14
↑ 66↓ 880.2%
30K· 18.64 mi
8:25/mi
2:32:22
↑ 181↓ 1480.2%
20M
8:33/mi
2:43:59
↑ 64↓ 500.2%
21M
9:02/mi
2:53:01
↑ 106↓ 241.6%
35K· 21.75 mi
8:11/mi
2:59:08
↑ 17↓ 861.7%
23M
8:38/mi
3:09:56
↑ 23↓ 630.6%
24M
8:27/mi
3:18:23
↓ 821.3%
40K· 24.85 mi
9:33/mi
3:26:33
↓ 200.3%
25.2M
13:23/mi
3:31:10
↑ 13↓ 160.2%
Finish· 26.22 mi
12:02/mi
3:43:26
↑ 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
Time1:46:11
Pace8:06 /mi
2nd Half
Distance13.11 mi
Time1:57:15
Pace8:57 /mi
📊Positive Split: 10.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:2624:538:0124:53
8:01
-
10K
6.21 mi11:44:3650:038:0325:10
8:06
+0:05
15K
9.32 mi12:09:471:15:148:0425:11
8:06
0:00
20K
12.43 mi12:35:151:40:428:0625:28
8:12
+0:06
Half
13.11 mi12:40:441:46:118:065:29
8:02
-0:10
25K
15.53 mi13:00:472:06:148:0820:03
8:16
+0:14
30K
18.64 mi13:26:552:32:228:1026:08
8:25
+0:09
20M
20.00 mi13:38:322:43:598:1211:37
8:33
+0:08
21M
21.00 mi13:47:342:53:018:149:02
9:02
+0:29
35K
21.75 mi13:53:412:59:088:146:07
8:11
-0:51
23M
23.00 mi14:04:293:09:568:1510:48
8:38
+0:27
24M
24.00 mi14:12:563:18:238:168:27
8:27
-0:11
40K
24.85 mi14:21:063:26:338:198:10
9:33
+1:06
25.2M
25.20 mi14:25:433:31:108:234:37
13:23
+3:50
Finish
26.22 mi14:37:593:43:268:3212:16
12:02
-1:21

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

8:01 /mi

Average Pace

8:32 /mi

Slowest Pace

13:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

3:18:23

89% of race

Time at Slower Pace

25:03

11% of race

Average Pace: 8:31 /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 mi11:19:2624:538:0124:53
8:01
#16673
10K
6.21 mi11:44:3650:038:0325:10
8:06
#16949
15K
9.32 mi12:09:471:15:148:0425:11
8:06
#16866
20K
12.43 mi12:35:151:40:428:0625:28
8:12
#16709
Half
13.11 mi12:40:441:46:118:065:29
8:02
#16676
25K
15.53 mi13:00:472:06:148:0820:03
8:16
#16498
30K
18.64 mi13:26:552:32:228:1026:08
8:25
#16035
20M
20.00 mi13:38:322:43:598:1211:37
8:33
#15862
21M
21.00 mi13:47:342:53:018:149:02
9:02
#15680
35K
21.75 mi13:53:412:59:088:146:07
8:11
#15581
23M
23.00 mi14:04:293:09:568:1510:48
8:38
#15447
24M
24.00 mi14:12:563:18:238:168:27
8:27
#15362
40K
24.85 mi14:21:063:26:338:198:10
9:33
#15497
25.2M
25.20 mi14:25:433:31:108:234:37
13:23
#15812
Finish
26.22 mi14:37:593:43:268:3212:16
12:02
#16723
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi166735559555916783(Top 59%)5598(Top 46%)5598(Top 563%)
10K6.21 mi3.10 mi16949-2765694-1355694-13517214(Top 61%)5831(Top 48%)5831(Top 587%)
15K9.32 mi3.11 mi16866+835645+495645+4916783(Top 59%)5598(Top 46%)5598(Top 563%)
20K12.43 mi3.11 mi16709+1575561+845561+8416302(Top 57%)5389(Top 44%)5389(Top 542%)
Half13.11 mi0.68 mi16676+335546+155546+1516266(Top 57%)5353(Top 44%)5353(Top 539%)
25K15.53 mi2.42 mi16498+1785459+875459+8715752(Top 55%)5166(Top 42%)5166(Top 520%)
30K18.64 mi3.11 mi16035+4635245+2145245+21414222(Top 50%)4496(Top 37%)4496(Top 452%)
20M20.00 mi1.36 mi15862+1735192+535192+5314124(Top 50%)4588(Top 38%)4588(Top 462%)
21M21.00 mi1.00 mi15680+1825128+645128+6413746(Top 48%)4499(Top 37%)4499(Top 453%)
35K21.75 mi0.75 mi15581+995080+485080+4813533(Top 48%)4464(Top 37%)4464(Top 449%)
23M23.00 mi1.25 mi15447+1345045+355045+3514130(Top 50%)4874(Top 40%)4874(Top 490%)
24M24.00 mi1.00 mi15362+855019+265019+2614233(Top 50%)4952(Top 40%)4952(Top 498%)
40K24.85 mi0.85 mi15497-1355126-1075126-10718915(Top 67%)7585(Top 62%)7585(Top 763%)
25.2M25.20 mi0.35 mi15812-3155310-1845310-18425547(Top 90%)10965(Top 90%)10965(Top 1103%)
Finish26.22 mi1.02 mi16723-9115864-5545864-55426840(Top 94%)11550(Top 94%)11550(Top 1162%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21story building
+97ft-345ft

Overall

16783

Females

5598

F55-59

5598

5K→10K

3.1 - 6.2 mi

Top 61%
×5story building
+79ft-138ft

Overall

17214

Females

5831

F55-59

5831

10K→15K

6.2 - 9.3 mi

Top 59%
×3story building
+67ft-78ft

Overall

16783

Females

5598

F55-59

5598

15K→20K

9.3 - 12.4 mi

Top 57%
×5story building
+106ft-86ft

Overall

16302

Females

5389

F55-59

5389

20K→Half

12.4 - 13.1 mi

Top 57%
×2story building
+19ft-37ft

Overall

16266

Females

5353

F55-59

5353

Half→25K

13.1 - 15.5 mi

Top 55%
×4story building
+66ft-88ft

Overall

15752

Females

5166

F55-59

5166

25K→30K

15.5 - 18.6 mi

Top 50%
×9story building
+181ft-148ft

Overall

14222

Females

4496

F55-59

4496

30K→20M

18.6 - 20.0 mi

Top 50%
×5story building
+64ft-50ft

Overall

14124

Females

4588

F55-59

4588

20M→21M

20.0 - 21.0 mi

Top 48%
×8story building
+106ft-24ft

Overall

13746

Females

4499

F55-59

4499

21M→35K

21.0 - 21.8 mi

Top 48%
×7story building
+17ft-86ft

Overall

13533

Females

4464

F55-59

4464

35K→23M

21.8 - 23.0 mi

Top 50%
×5story building
+23ft-63ft

Overall

14130

Females

4874

F55-59

4874

23M→24M

23.0 - 24.0 mi

Top 50%
×6story building
+12ft-82ft

Overall

14233

Females

4952

F55-59

4952

24M→40K

24.0 - 24.9 mi

Top 67%
×1story
+6ft-20ft

Overall

18915

Females

7585

F55-59

7585

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

25547

Females

10965

F55-59

10965

25.2M→Finish

25.2 - 26.2 mi

Top 94%
×2story building
+22ft-21ft

Overall

26840

Females

11550

F55-59

11550

Passing Analysis

Category:
Athletes Passed
2360
Passed By
2410
Net Change
-50
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16673
5K → 10K182458-276#16673#16949
10K → 15K249166+83#16949#16866
15K → 20K274117+157#16866#16709
20K → Half5421+33#16709#16676
Half → 25K23759+178#16676#16498
25K → 30K49936+463#16498#16035
30K → 20M20936+173#16035#15862
20M → 21M21735+182#15862#15680
21M → 35K10910+99#15680#15581
35K → 23M17440+134#15581#15447
23M → 24M11530+85#15447#15362
24M → 40K34169-135#15362#15497
40K → 25.2M4319-315#15497#15812
25.2M → Finish3914-911#15812#16723
TOTALS23602410-50
📊

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