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BOSTON MARATHON 2025

Nancy Sato

Bib: 25577•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F65-69)
#0 / 222
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:41
Rank: #24411
Start → 5K
29:41 | 9:33/mi
10K· 6.21 mi
1:01:04
Rank: #25030 (-619)
5K → 10K
31:23 | 10:06/mi
15K· 9.32 mi
1:33:09
Rank: #25268 (-238)
10K → 15K
32:05 | 10:20/mi
20K· 12.43 mi
2:06:07
Rank: #25334 (-66)
15K → 20K
32:58 | 10:37/mi
Half· 13.11 mi
2:13:07
Rank: #25325 (+9)
20K → Half
7:00 | 10:16/mi
25K· 15.53 mi
2:38:43
Rank: #25157 (+168)
Half → 25K
25:36 | 10:34/mi
30K· 18.64 mi
3:14:25
Rank: #25092 (+65)
25K → 30K
35:42 | 11:29/mi
20M
3:30:19
Rank: #25091 (+1)
30K → 20M
15:54 | 11:42/mi
21M
3:43:24
Rank: #25123 (-32)
20M → 21M
13:05 | 13:05/mi
35K· 21.75 mi
3:52:11
Rank: #25143 (-20)
21M → 35K
8:47 | 11:44/mi
23M
4:07:02
Rank: #25132 (+11)
35K → 23M
14:51 | 11:52/mi
24M
4:18:49
Rank: #25141 (-9)
23M → 24M
11:47 | 11:47/mi
40K· 24.85 mi
4:29:12
Rank: #25149 (-8)
24M → 40K
10:23 | 12:09/mi
25.2M
4:33:32
Rank: #25146 (+3)
40K → 25.2M
4:20 | 12:34/mi
Finish· 26.22 mi
4:44:12
Rank: #25130 (+16)
25.2M → Finish
10:40 | 10:28/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:13:07
Pace10:09 /mi
2nd Half
Distance13.11 mi
Time2:31:05
Pace11:32 /mi
📊Positive Split: 13.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:2929:419:3329:41
9:33
-
10K
6.21 mi12:16:521:01:049:5031:23
10:06
+0:33
15K
9.32 mi12:48:571:33:0910:0032:05
10:20
+0:14
20K
12.43 mi13:21:552:06:0710:0932:58
10:37
+0:17
Half
13.11 mi13:28:552:13:0710:097:00
10:16
-0:21
25K
15.53 mi13:54:312:38:4310:1325:36
10:34
+0:18
30K
18.64 mi14:30:133:14:2510:2635:42
11:29
+0:55
20M
20.00 mi14:46:073:30:1910:3115:54
11:42
+0:13
21M
21.00 mi14:59:123:43:2410:3813:05
13:05
+1:23
35K
21.75 mi15:07:593:52:1110:418:47
11:44
-1:21
23M
23.00 mi15:22:504:07:0210:4414:51
11:52
+0:08
24M
24.00 mi15:34:374:18:4910:4711:47
11:47
-0:05
40K
24.85 mi15:45:004:29:1210:5010:23
12:09
+0:22
25.2M
25.20 mi15:49:204:33:3210:514:20
12:34
+0:25
Finish
26.22 mi16:00:004:44:1210:5110:40
10:28
-2:06

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

9:33 /mi

Average Pace

10:51 /mi

Slowest Pace

13:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:49:23

60% of race

Time at Steady Pace

1:27:01

31% of race

Time at Slower Pace

27:48

10% of race

Average Pace: 10:50 /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 mi11:45:2929:419:3329:41
9:33
#24411
10K
6.21 mi12:16:521:01:049:5031:23
10:06
#25030
15K
9.32 mi12:48:571:33:0910:0032:05
10:20
#25268
20K
12.43 mi13:21:552:06:0710:0932:58
10:37
#25334
Half
13.11 mi13:28:552:13:0710:097:00
10:16
#25325
25K
15.53 mi13:54:312:38:4310:1325:36
10:34
#25157
30K
18.64 mi14:30:133:14:2510:2635:42
11:29
#25092
20M
20.00 mi14:46:073:30:1910:3115:54
11:42
#25091
21M
21.00 mi14:59:123:43:2410:3813:05
13:05
#25123
35K
21.75 mi15:07:593:52:1110:418:47
11:44
#25143
23M
23.00 mi15:22:504:07:0210:4414:51
11:52
#25132
24M
24.00 mi15:34:374:18:4910:4711:47
11:47
#25141
40K
24.85 mi15:45:004:29:1210:5010:23
12:09
#25149
25.2M
25.20 mi15:49:204:33:3210:514:20
12:34
#25146
Finish
26.22 mi16:00:004:44:1210:5110:40
10:28
#25130
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF65-69Seg. OverallSeg. FemalesSeg. F65-69
5K3.11 mi3.11 mi244119911991125638(Top 90%)10582(Top 87%)10582(Top 4767%)
10K6.21 mi3.10 mi25030-61910248-33710248-33725530(Top 90%)10543(Top 86%)10543(Top 4749%)
15K9.32 mi3.11 mi25268-23810372-12410372-12425638(Top 90%)10582(Top 87%)10582(Top 4767%)
20K12.43 mi3.11 mi25334-6610426-5410426-5425371(Top 89%)10465(Top 86%)10465(Top 4714%)
Half13.11 mi0.68 mi25325+910420+610420+625345(Top 89%)10461(Top 86%)10461(Top 4712%)
25K15.53 mi2.42 mi25157+16810342+7810342+7824474(Top 86%)10002(Top 82%)10002(Top 4505%)
30K18.64 mi3.11 mi25092+6510330+1210330+1224830(Top 87%)10312(Top 84%)10312(Top 4645%)
20M20.00 mi1.36 mi25091+110338-810338-824843(Top 87%)10389(Top 85%)10389(Top 4680%)
21M21.00 mi1.00 mi25123-3210375-3710375-3725142(Top 89%)10636(Top 87%)10636(Top 4791%)
35K21.75 mi0.75 mi25143-2010398-2310398-2325450(Top 90%)10819(Top 88%)10819(Top 4873%)
23M23.00 mi1.25 mi25132+1110404-610404-624871(Top 88%)10532(Top 86%)10532(Top 4744%)
24M24.00 mi1.00 mi25141-910417-1310417-1325360(Top 89%)10805(Top 88%)10805(Top 4867%)
40K24.85 mi0.85 mi25149-810428-1110428-1125128(Top 88%)10733(Top 88%)10733(Top 4835%)
25.2M25.20 mi0.35 mi25146+310427+110427+124277(Top 85%)10305(Top 84%)10305(Top 4642%)
Finish26.22 mi1.02 mi25130+1610429-210429-224187(Top 85%)10264(Top 84%)10264(Top 4623%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21stories
+97ft-345ft

Overall

25638

Females

10582

F65-69

10582

5K→10K

3.1 - 6.2 mi

Top 90%
×5stories
+79ft-138ft

Overall

25530

Females

10543

F65-69

10543

10K→15K

6.2 - 9.3 mi

Top 90%
×3stories
+67ft-78ft

Overall

25638

Females

10582

F65-69

10582

15K→20K

9.3 - 12.4 mi

Top 89%
×5stories
+106ft-86ft

Overall

25371

Females

10465

F65-69

10465

20K→Half

12.4 - 13.1 mi

Top 89%
×2stories
+19ft-37ft

Overall

25345

Females

10461

F65-69

10461

Half→25K

13.1 - 15.5 mi

Top 86%
×4stories
+66ft-88ft

Overall

24474

Females

10002

F65-69

10002

25K→30K

15.5 - 18.6 mi

Top 87%
×9stories
+181ft-148ft

Overall

24830

Females

10312

F65-69

10312

30K→20M

18.6 - 20.0 mi

Top 87%
×5stories
+64ft-50ft

Overall

24843

Females

10389

F65-69

10389

20M→21M

20.0 - 21.0 mi

Top 89%
×8stories
+106ft-24ft

Overall

25142

Females

10636

F65-69

10636

21M→35K

21.0 - 21.8 mi

Top 90%
×7stories
+17ft-86ft

Overall

25450

Females

10819

F65-69

10819

35K→23M

21.8 - 23.0 mi

Top 88%
×5stories
+23ft-63ft

Overall

24871

Females

10532

F65-69

10532

23M→24M

23.0 - 24.0 mi

Top 89%
×6stories
+12ft-82ft

Overall

25360

Females

10805

F65-69

10805

24M→40K

24.0 - 24.9 mi

Top 88%
×1story
+6ft-20ft

Overall

25128

Females

10733

F65-69

10733

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

24277

Females

10305

F65-69

10305

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2stories
+22ft-21ft

Overall

24187

Females

10264

F65-69

10264

Passing Analysis

Category:
Athletes Passed
865
Passed By
1584
Net Change
-719
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24411
5K → 10K48667-619#24411#25030
10K → 15K68306-238#25030#25268
15K → 20K105171-66#25268#25334
20K → Half3021+9#25334#25325
Half → 25K19628+168#25325#25157
25K → 30K15590+65#25157#25092
30K → 20M6160+1#25092#25091
20M → 21M3971-32#25091#25123
21M → 35K2040-20#25123#25143
35K → 23M4332+11#25143#25132
23M → 24M3241-9#25132#25141
24M → 40K2634-8#25141#25149
40K → 25.2M107+3#25149#25146
25.2M → Finish3216+16#25146#25130
TOTALS8651584-719
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing