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BOSTON MARATHON 2025

Kelly Sinclair

Bib: 31901•F

KS

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F50-54)
#0 / 1303
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
9:59/mi
31:02
↑ 97↓ 3451.5%
10K· 6.21 mi
10:38/mi
1:04:05
↑ 79↓ 1380.4%
15K· 9.32 mi
10:55/mi
1:38:00
↑ 67↓ 78
20K· 12.43 mi
11:27/mi
2:13:33
↑ 106↓ 860.1%
Half· 13.11 mi
11:08/mi
2:21:09
↑ 19↓ 370.5%
25K· 15.53 mi
12:19/mi
2:51:01
↑ 66↓ 880.2%
30K· 18.64 mi
13:45/mi
3:33:44
↑ 181↓ 1480.2%
20M
13:52/mi
3:52:35
↑ 64↓ 500.2%
21M
15:07/mi
4:07:42
↑ 106↓ 241.6%
35K· 21.75 mi
14:52/mi
4:18:49
↑ 17↓ 861.7%
23M
13:53/mi
4:36:12
↑ 23↓ 630.6%
24M
13:42/mi
4:49:53
↓ 821.3%
40K· 24.85 mi
13:42/mi
5:01:36
↓ 200.3%
25.2M
15:28/mi
5:06:56
↑ 13↓ 160.2%
Finish· 26.22 mi
12:51/mi
5:20:02
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:21:09
Pace10:46 /mi
2nd Half
Distance13.11 mi
Time2:58:53
Pace13:39 /mi
📊Positive Split: 26.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:4031:029:5931:02
9:59
-
10K
6.21 mi12:25:431:04:0510:1933:03
10:38
+0:39
15K
9.32 mi12:59:381:38:0010:3133:55
10:55
+0:17
20K
12.43 mi13:35:112:13:3310:4535:33
11:27
+0:32
Half
13.11 mi13:42:472:21:0910:467:36
11:08
-0:19
25K
15.53 mi14:12:392:51:0111:0129:52
12:19
+1:11
30K
18.64 mi14:55:223:33:4411:2842:43
13:45
+1:26
20M
20.00 mi15:14:133:52:3511:3818:51
13:52
+0:07
21M
21.00 mi15:29:204:07:4211:4815:07
15:07
+1:15
35K
21.75 mi15:40:274:18:4911:5411:07
14:52
-0:15
23M
23.00 mi15:57:504:36:1212:0117:23
13:53
-0:59
24M
24.00 mi16:11:314:49:5312:0513:41
13:42
-0:11
40K
24.85 mi16:23:145:01:3612:0811:43
13:42
0:00
25.2M
25.20 mi16:28:345:06:5612:115:20
15:28
+1:46
Finish
26.22 mi16:41:405:20:0212:1313:06
12:51
-2:37

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

9:59 /mi

Average Pace

12:13 /mi

Slowest Pace

15:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:04:07

58% of race

Time at Steady Pace

1:44:21

33% of race

Time at Slower Pace

31:34

10% of race

Average Pace: 12:12 /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 mi11:52:4031:029:5931:02
9:59
#25535
10K
6.21 mi12:25:431:04:0510:1933:03
10:38
#26108
15K
9.32 mi12:59:381:38:0010:3133:55
10:55
#26307
20K
12.43 mi13:35:112:13:3310:4535:33
11:27
#26407
Half
13.11 mi13:42:472:21:0910:467:36
11:08
#26423
25K
15.53 mi14:12:392:51:0111:0129:52
12:19
#26511
30K
18.64 mi14:55:223:33:4411:2842:43
13:45
#26734
20M
20.00 mi15:14:133:52:3511:3818:51
13:52
#26808
21M
21.00 mi15:29:204:07:4211:4815:07
15:07
#26866
35K
21.75 mi15:40:274:18:4911:5411:07
14:52
#26951
23M
23.00 mi15:57:504:36:1212:0117:23
13:53
#26988
24M
24.00 mi16:11:314:49:5312:0513:41
13:42
#27012
40K
24.85 mi16:23:145:01:3612:0811:43
13:42
#27011
25.2M
25.20 mi16:28:345:06:5612:115:20
15:28
#27027
Finish
26.22 mi16:41:405:20:0212:1313:06
12:51
#27061
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi25535104961049626564(Top 94%)11106(Top 91%)11106(Top 852%)
10K6.21 mi3.10 mi26108-57310831-33510831-33526500(Top 93%)11071(Top 91%)11071(Top 850%)
15K9.32 mi3.11 mi26307-19910952-12110952-12126564(Top 94%)11106(Top 91%)11106(Top 852%)
20K12.43 mi3.11 mi26407-10011014-6211014-6226562(Top 94%)11134(Top 91%)11134(Top 854%)
Half13.11 mi0.68 mi26423-1611018-411018-426691(Top 94%)11234(Top 92%)11234(Top 862%)
25K15.53 mi2.42 mi26511-8811087-6911087-6926766(Top 94%)11290(Top 92%)11290(Top 866%)
30K18.64 mi3.11 mi26734-22311250-16311250-16327319(Top 96%)11670(Top 95%)11670(Top 896%)
20M20.00 mi1.36 mi26808-7411293-4311293-4327189(Top 96%)11658(Top 95%)11658(Top 895%)
21M21.00 mi1.00 mi26866-5811335-4211335-4227240(Top 96%)11691(Top 96%)11691(Top 897%)
35K21.75 mi0.75 mi26951-8511387-5211387-5228034(Top 99%)12093(Top 99%)12093(Top 928%)
23M23.00 mi1.25 mi26988-3711418-3111418-3127227(Top 96%)11717(Top 96%)11717(Top 899%)
24M24.00 mi1.00 mi27012-2411443-2511443-2527451(Top 97%)11867(Top 97%)11867(Top 911%)
40K24.85 mi0.85 mi27011+111446-311446-326933(Top 95%)11608(Top 95%)11608(Top 891%)
25.2M25.20 mi0.35 mi27027-1611460-1411460-1427429(Top 97%)11858(Top 97%)11858(Top 910%)
Finish26.22 mi1.02 mi27061-3411485-2511485-2527532(Top 97%)11884(Top 97%)11884(Top 912%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 94%
×21story building
+97ft-345ft

Overall

26564

Females

11106

F50-54

11106

5K→10K

3.1 - 6.2 mi

Top 93%
×5story building
+79ft-138ft

Overall

26500

Females

11071

F50-54

11071

10K→15K

6.2 - 9.3 mi

Top 94%
×3story building
+67ft-78ft

Overall

26564

Females

11106

F50-54

11106

15K→20K

9.3 - 12.4 mi

Top 94%
×5story building
+106ft-86ft

Overall

26562

Females

11134

F50-54

11134

20K→Half

12.4 - 13.1 mi

Top 94%
×2story building
+19ft-37ft

Overall

26691

Females

11234

F50-54

11234

Half→25K

13.1 - 15.5 mi

Top 94%
×4story building
+66ft-88ft

Overall

26766

Females

11290

F50-54

11290

25K→30K

15.5 - 18.6 mi

Top 96%
×9story building
+181ft-148ft

Overall

27319

Females

11670

F50-54

11670

30K→20M

18.6 - 20.0 mi

Top 96%
×5story building
+64ft-50ft

Overall

27189

Females

11658

F50-54

11658

20M→21M

20.0 - 21.0 mi

Top 96%
×8story building
+106ft-24ft

Overall

27240

Females

11691

F50-54

11691

21M→35K

21.0 - 21.8 mi

Top 99%
×7story building
+17ft-86ft

Overall

28034

Females

12093

F50-54

12093

35K→23M

21.8 - 23.0 mi

Top 96%
×5story building
+23ft-63ft

Overall

27227

Females

11717

F50-54

11717

23M→24M

23.0 - 24.0 mi

Top 97%
×6story building
+12ft-82ft

Overall

27451

Females

11867

F50-54

11867

24M→40K

24.0 - 24.9 mi

Top 95%
×1story
+6ft-20ft

Overall

26933

Females

11608

F50-54

11608

40K→25.2M

24.9 - 25.2 mi

Top 97%
×1story
+13ft-16ft

Overall

27429

Females

11858

F50-54

11858

25.2M→Finish

25.2 - 26.2 mi

Top 97%
×2story building
+22ft-21ft

Overall

27532

Females

11884

F50-54

11884

Passing Analysis

Category:
Athletes Passed
400
Passed By
1926
Net Change
-1526
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25535
5K → 10K52625-573#25535#26108
10K → 15K72271-199#26108#26307
15K → 20K86186-100#26307#26407
20K → Half1329-16#26407#26423
Half → 25K57145-88#26423#26511
25K → 30K33256-223#26511#26734
30K → 20M1084-74#26734#26808
20M → 21M967-58#26808#26866
21M → 35K893-85#26866#26951
35K → 23M1451-37#26951#26988
23M → 24M1539-24#26988#27012
24M → 40K1615+1#27012#27011
40K → 25.2M521-16#27011#27027
25.2M → Finish1044-34#27027#27061
TOTALS4001926-1526
📊

Passing Visuals

Category:
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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