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BOSTON MARATHON 2025

Karen Sibson

Bib: 23994•F

MI

0:00
0:00
/ mi
Masters
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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
8:59/mi
27:54
↑ 97↓ 3451.5%
10K· 6.21 mi
9:09/mi
56:20
↑ 79↓ 1380.4%
15K· 9.32 mi
9:13/mi
1:24:58
↑ 67↓ 78
20K· 12.43 mi
9:23/mi
1:54:07
↑ 106↓ 860.1%
Half· 13.11 mi
9:17/mi
2:00:27
↑ 19↓ 370.5%
25K· 15.53 mi
9:40/mi
2:23:53
↑ 66↓ 880.2%
30K· 18.64 mi
10:17/mi
2:55:49
↑ 181↓ 1480.2%
20M
10:41/mi
3:10:20
↑ 64↓ 500.2%
21M
11:17/mi
3:21:37
↑ 106↓ 241.6%
35K· 21.75 mi
10:14/mi
3:29:16
↑ 17↓ 861.7%
23M
10:20/mi
3:42:12
↑ 23↓ 630.6%
24M
10:10/mi
3:52:22
↓ 821.3%
40K· 24.85 mi
10:21/mi
4:01:13
↓ 200.3%
25.2M
11:21/mi
4:05:08
↑ 13↓ 160.2%
Finish· 26.22 mi
9:52/mi
4:15:11
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:00:27
Pace9:11 /mi
2nd Half
Distance13.11 mi
Time2:14:44
Pace10:17 /mi
📊Positive Split: 11.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:28:0527:548:5927:54
8:59
-
10K
6.21 mi11:56:3156:209:0428:26
9:09
+0:10
15K
9.32 mi12:25:091:24:589:0728:38
9:13
+0:04
20K
12.43 mi12:54:181:54:079:1129:09
9:23
+0:10
Half
13.11 mi13:00:382:00:279:116:20
9:17
-0:06
25K
15.53 mi13:24:042:23:539:1623:26
9:40
+0:23
30K
18.64 mi13:56:002:55:499:2631:56
10:17
+0:37
20M
20.00 mi14:10:313:10:209:3114:31
10:41
+0:24
21M
21.00 mi14:21:483:21:379:3611:17
11:17
+0:36
35K
21.75 mi14:29:273:29:169:377:39
10:14
-1:03
23M
23.00 mi14:42:233:42:129:4012:56
10:20
+0:06
24M
24.00 mi14:52:333:52:229:4110:10
10:10
-0:10
40K
24.85 mi15:01:244:01:139:428:51
10:21
+0:11
25.2M
25.20 mi15:05:194:05:089:443:55
11:21
+1:00
Finish
26.22 mi15:15:224:15:119:4410:03
9:52
-1:29

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

8:59 /mi

Average Pace

9:44 /mi

Slowest Pace

11:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:23:53

56% of race

Time at Steady Pace

1:21:35

32% of race

Time at Slower Pace

29:43

12% of race

Average Pace: 9:44 /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 mi11:28:0527:548:5927:54
8:59
#22344
10K
6.21 mi11:56:3156:209:0428:26
9:09
#22694
15K
9.32 mi12:25:091:24:589:0728:38
9:13
#22773
20K
12.43 mi12:54:181:54:079:1129:09
9:23
#22710
Half
13.11 mi13:00:382:00:279:116:20
9:17
#22730
25K
15.53 mi13:24:042:23:539:1623:26
9:40
#22663
30K
18.64 mi13:56:002:55:499:2631:56
10:17
#22610
20M
20.00 mi14:10:313:10:209:3114:31
10:41
#22613
21M
21.00 mi14:21:483:21:379:3611:17
11:17
#22566
35K
21.75 mi14:29:273:29:169:377:39
10:14
#22554
23M
23.00 mi14:42:233:42:129:4012:56
10:20
#22484
24M
24.00 mi14:52:333:52:229:4110:10
10:10
#22434
40K
24.85 mi15:01:244:01:139:428:51
10:21
#22389
25.2M
25.20 mi15:05:194:05:089:443:55
11:21
#22373
Finish
26.22 mi15:15:224:15:119:4410:03
9:52
#22368
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi223448825882522916(Top 81%)9055(Top 74%)9055(Top 911%)
10K6.21 mi3.10 mi22694-3508987-1628987-16223007(Top 81%)9138(Top 75%)9138(Top 919%)
15K9.32 mi3.11 mi22773-798998-118998-1122916(Top 81%)9055(Top 74%)9055(Top 911%)
20K12.43 mi3.11 mi22710+638957+418957+4122525(Top 79%)8880(Top 73%)8880(Top 893%)
Half13.11 mi0.68 mi22730-208972-158972-1522930(Top 81%)9108(Top 74%)9108(Top 916%)
25K15.53 mi2.42 mi22663+678956+168956+1622410(Top 79%)8884(Top 73%)8884(Top 894%)
30K18.64 mi3.11 mi22610+538976-208976-2022388(Top 79%)8991(Top 74%)8991(Top 905%)
20M20.00 mi1.36 mi22613-38995-198995-1922918(Top 81%)9377(Top 77%)9377(Top 943%)
21M21.00 mi1.00 mi22566+478983+128983+1222124(Top 78%)9038(Top 74%)9038(Top 909%)
35K21.75 mi0.75 mi22554+128991-88991-822512(Top 79%)9291(Top 76%)9291(Top 935%)
23M23.00 mi1.25 mi22484+708980+118980+1121530(Top 76%)8836(Top 72%)8836(Top 889%)
24M24.00 mi1.00 mi22434+508974+68974+621852(Top 77%)9064(Top 74%)9064(Top 912%)
40K24.85 mi0.85 mi22389+458974897421548(Top 76%)8958(Top 73%)8958(Top 901%)
25.2M25.20 mi0.35 mi22373+168973+18973+121703(Top 76%)9009(Top 74%)9009(Top 906%)
Finish26.22 mi1.02 mi22368+58979-68979-622520(Top 79%)9425(Top 77%)9425(Top 948%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 81%
×21story building
+97ft-345ft

Overall

22916

Females

9055

F55-59

9055

5K→10K

3.1 - 6.2 mi

Top 81%
×5story building
+79ft-138ft

Overall

23007

Females

9138

F55-59

9138

10K→15K

6.2 - 9.3 mi

Top 81%
×3story building
+67ft-78ft

Overall

22916

Females

9055

F55-59

9055

15K→20K

9.3 - 12.4 mi

Top 79%
×5story building
+106ft-86ft

Overall

22525

Females

8880

F55-59

8880

20K→Half

12.4 - 13.1 mi

Top 81%
×2story building
+19ft-37ft

Overall

22930

Females

9108

F55-59

9108

Half→25K

13.1 - 15.5 mi

Top 79%
×4story building
+66ft-88ft

Overall

22410

Females

8884

F55-59

8884

25K→30K

15.5 - 18.6 mi

Top 79%
×9story building
+181ft-148ft

Overall

22388

Females

8991

F55-59

8991

30K→20M

18.6 - 20.0 mi

Top 81%
×5story building
+64ft-50ft

Overall

22918

Females

9377

F55-59

9377

20M→21M

20.0 - 21.0 mi

Top 78%
×8story building
+106ft-24ft

Overall

22124

Females

9038

F55-59

9038

21M→35K

21.0 - 21.8 mi

Top 79%
×7story building
+17ft-86ft

Overall

22512

Females

9291

F55-59

9291

35K→23M

21.8 - 23.0 mi

Top 76%
×5story building
+23ft-63ft

Overall

21530

Females

8836

F55-59

8836

23M→24M

23.0 - 24.0 mi

Top 77%
×6story building
+12ft-82ft

Overall

21852

Females

9064

F55-59

9064

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

21548

Females

8958

F55-59

8958

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

21703

Females

9009

F55-59

9009

25.2M→Finish

25.2 - 26.2 mi

Top 79%
×2story building
+22ft-21ft

Overall

22520

Females

9425

F55-59

9425

Passing Analysis

Category:
Athletes Passed
1431
Passed By
1455
Net Change
-24
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22344
5K → 10K128478-350#22344#22694
10K → 15K149228-79#22694#22773
15K → 20K216153+63#22773#22710
20K → Half2545-20#22710#22730
Half → 25K178111+67#22730#22663
25K → 30K194141+53#22663#22610
30K → 20M7477-3#22610#22613
20M → 21M9851+47#22613#22566
21M → 35K4735+12#22566#22554
35K → 23M10838+70#22554#22484
23M → 24M7727+50#22484#22434
24M → 40K6419+45#22434#22389
40K → 25.2M3014+16#22389#22373
25.2M → Finish4338+5#22373#22368
TOTALS14311455-24
📊

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