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BOSTON MARATHON 2025

Nancy Letts

Bib: 29202•F

MO

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F45-49)
#0 / 1813
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
31:24
Rank: #25830
Start → 5K
31:24 | 10:06/mi
10K· 6.21 mi
1:02:18
Rank: #25505 (+325)
5K → 10K
30:54 | 9:57/mi
15K· 9.32 mi
1:33:41
Rank: #25416 (+89)
10K → 15K
31:23 | 10:06/mi
20K· 12.43 mi
2:06:19
Rank: #25360 (+56)
15K → 20K
32:38 | 10:30/mi
Half· 13.11 mi
2:13:21
Rank: #25357 (+3)
20K → Half
7:02 | 10:19/mi
25K· 15.53 mi
2:40:03
Rank: #25329 (+28)
Half → 25K
26:42 | 11:01/mi
30K· 18.64 mi
3:17:11
Rank: #25372 (-43)
25K → 30K
37:08 | 11:57/mi
20M
3:33:33
Rank: #25379 (-7)
30K → 20M
16:22 | 12:03/mi
21M
3:46:16
Rank: #25345 (+34)
20M → 21M
12:43 | 12:43/mi
35K· 21.75 mi
3:55:04
Rank: #25357 (-12)
21M → 35K
8:48 | 11:46/mi
23M
4:09:08
Rank: #25285 (+72)
35K → 23M
14:04 | 11:14/mi
24M
4:20:25
Rank: #25253 (+32)
23M → 24M
11:17 | 11:17/mi
40K· 24.85 mi
4:30:13
Rank: #25219 (+34)
24M → 40K
9:48 | 11:28/mi
25.2M
4:35:09
Rank: #25250 (-31)
40K → 25.2M
4:56 | 14:18/mi
Finish· 26.22 mi
4:46:03
Rank: #25242 (+8)
25.2M → Finish
10:54 | 10:42/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:13:21
Pace10:10 /mi
2nd Half
Distance13.11 mi
Time2:32:42
Pace11:39 /mi
📊Positive Split: 14.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:1631:2410:0631:24
10:06
-
10K
6.21 mi12:20:101:02:1810:0230:54
9:57
-0:09
15K
9.32 mi12:51:331:33:4110:0331:23
10:06
+0:09
20K
12.43 mi13:24:112:06:1910:1032:38
10:30
+0:24
Half
13.11 mi13:31:132:13:2110:107:02
10:19
-0:11
25K
15.53 mi13:57:552:40:0310:1826:42
11:01
+0:42
30K
18.64 mi14:35:033:17:1110:3537:08
11:57
+0:56
20M
20.00 mi14:51:253:33:3310:4116:22
12:03
+0:06
21M
21.00 mi15:04:083:46:1610:4612:43
12:43
+0:40
35K
21.75 mi15:12:563:55:0410:498:48
11:46
-0:57
23M
23.00 mi15:27:004:09:0810:5014:04
11:14
-0:32
24M
24.00 mi15:38:174:20:2510:5111:17
11:17
+0:03
40K
24.85 mi15:48:054:30:1310:529:48
11:28
+0:11
25.2M
25.20 mi15:53:014:35:0910:554:56
14:18
+2:50
Finish
26.22 mi16:03:554:46:0310:5510:54
10:42
-3:36

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

9:57 /mi

Average Pace

10:55 /mi

Slowest Pace

14:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:13:21

47% of race

Time at Steady Pace

1:21:33

29% of race

Time at Slower Pace

1:11:09

25% of race

Average Pace: 10:55 /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 mi11:49:1631:2410:0631:24
10:06
#25830
10K
6.21 mi12:20:101:02:1810:0230:54
9:57
#25505
15K
9.32 mi12:51:331:33:4110:0331:23
10:06
#25416
20K
12.43 mi13:24:112:06:1910:1032:38
10:30
#25360
Half
13.11 mi13:31:132:13:2110:107:02
10:19
#25357
25K
15.53 mi13:57:552:40:0310:1826:42
11:01
#25329
30K
18.64 mi14:35:033:17:1110:3537:08
11:57
#25372
20M
20.00 mi14:51:253:33:3310:4116:22
12:03
#25379
21M
21.00 mi15:04:083:46:1610:4612:43
12:43
#25345
35K
21.75 mi15:12:563:55:0410:498:48
11:46
#25357
23M
23.00 mi15:27:004:09:0810:5014:04
11:14
#25285
24M
24.00 mi15:38:174:20:2510:5111:17
11:17
#25253
40K
24.85 mi15:48:054:30:1310:529:48
11:28
#25219
25.2M
25.20 mi15:53:014:35:0910:554:56
14:18
#25250
Finish
26.22 mi16:03:554:46:0310:5510:54
10:42
#25242
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi25830106611066125203(Top 89%)10341(Top 85%)10341(Top 570%)
10K6.21 mi3.10 mi25505+32510504+15710504+15725183(Top 89%)10330(Top 84%)10330(Top 570%)
15K9.32 mi3.11 mi25416+8910449+5510449+5525203(Top 89%)10341(Top 85%)10341(Top 570%)
20K12.43 mi3.11 mi25360+5610440+910440+925197(Top 89%)10373(Top 85%)10373(Top 572%)
Half13.11 mi0.68 mi25357+310437+310437+325442(Top 90%)10514(Top 86%)10514(Top 580%)
25K15.53 mi2.42 mi25329+2810431+610431+625219(Top 89%)10420(Top 85%)10420(Top 575%)
30K18.64 mi3.11 mi25372-4310489-5810489-5825525(Top 90%)10689(Top 87%)10689(Top 590%)
20M20.00 mi1.36 mi25379-710504-1510504-1525320(Top 89%)10649(Top 87%)10649(Top 587%)
21M21.00 mi1.00 mi25345+3410499+510499+524685(Top 87%)10392(Top 85%)10392(Top 573%)
35K21.75 mi0.75 mi25357-1210521-2210521-2225486(Top 90%)10840(Top 89%)10840(Top 598%)
23M23.00 mi1.25 mi25285+7210484+3710484+3723729(Top 84%)9974(Top 82%)9974(Top 550%)
24M24.00 mi1.00 mi25253+3210482+210482+224512(Top 86%)10391(Top 85%)10391(Top 573%)
40K24.85 mi0.85 mi25219+3410467+1510467+1524049(Top 85%)10193(Top 83%)10193(Top 562%)
25.2M25.20 mi0.35 mi25250-3110487-2010487-2026561(Top 94%)11453(Top 94%)11453(Top 632%)
Finish26.22 mi1.02 mi25242+810492-510492-524711(Top 87%)10519(Top 86%)10519(Top 580%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 89%
×21stories
+97ft-345ft

Overall

25203

Females

10341

F45-49

10341

5K→10K

3.1 - 6.2 mi

Top 89%
×5stories
+79ft-138ft

Overall

25183

Females

10330

F45-49

10330

10K→15K

6.2 - 9.3 mi

Top 89%
×3stories
+67ft-78ft

Overall

25203

Females

10341

F45-49

10341

15K→20K

9.3 - 12.4 mi

Top 89%
×5stories
+106ft-86ft

Overall

25197

Females

10373

F45-49

10373

20K→Half

12.4 - 13.1 mi

Top 90%
×2stories
+19ft-37ft

Overall

25442

Females

10514

F45-49

10514

Half→25K

13.1 - 15.5 mi

Top 89%
×4stories
+66ft-88ft

Overall

25219

Females

10420

F45-49

10420

25K→30K

15.5 - 18.6 mi

Top 90%
×9stories
+181ft-148ft

Overall

25525

Females

10689

F45-49

10689

30K→20M

18.6 - 20.0 mi

Top 89%
×5stories
+64ft-50ft

Overall

25320

Females

10649

F45-49

10649

20M→21M

20.0 - 21.0 mi

Top 87%
×8stories
+106ft-24ft

Overall

24685

Females

10392

F45-49

10392

21M→35K

21.0 - 21.8 mi

Top 90%
×7stories
+17ft-86ft

Overall

25486

Females

10840

F45-49

10840

35K→23M

21.8 - 23.0 mi

Top 84%
×5stories
+23ft-63ft

Overall

23729

Females

9974

F45-49

9974

23M→24M

23.0 - 24.0 mi

Top 86%
×6stories
+12ft-82ft

Overall

24512

Females

10391

F45-49

10391

24M→40K

24.0 - 24.9 mi

Top 85%
×1story
+6ft-20ft

Overall

24049

Females

10193

F45-49

10193

40K→25.2M

24.9 - 25.2 mi

Top 94%
×1story
+13ft-16ft

Overall

26561

Females

11453

F45-49

11453

25.2M→Finish

25.2 - 26.2 mi

Top 87%
×2stories
+22ft-21ft

Overall

24711

Females

10519

F45-49

10519

Passing Analysis

Category:
Athletes Passed
1301
Passed By
713
Net Change
+588
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25830
5K → 10K38358+325#25830#25505
10K → 15K17384+89#25505#25416
15K → 20K15296+56#25416#25360
20K → Half2623+3#25360#25357
Half → 25K10880+28#25357#25329
25K → 30K105148-43#25329#25372
30K → 20M4956-7#25372#25379
20M → 21M6329+34#25379#25345
21M → 35K2638-12#25345#25357
35K → 23M8210+72#25357#25285
23M → 24M5927+32#25285#25253
24M → 40K428+34#25253#25219
40K → 25.2M536-31#25219#25250
25.2M → Finish2820+8#25250#25242
TOTALS1301713+588
📊

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