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BOSTON MARATHON 2025

Karen Andersen

Bib: 22231•F

PA

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

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
8:38/mi
26:50
↑ 97↓ 3451.5%
10K· 6.21 mi
8:50/mi
54:18
↑ 79↓ 1380.4%
15K· 9.32 mi
9:02/mi
1:22:22
↑ 67↓ 78
20K· 12.43 mi
9:33/mi
1:52:01
↑ 106↓ 860.1%
Half· 13.11 mi
9:48/mi
1:58:42
↑ 19↓ 370.5%
25K· 15.53 mi
10:23/mi
2:23:52
↑ 66↓ 880.2%
30K· 18.64 mi
12:13/mi
3:01:49
↑ 181↓ 1480.2%
20M
12:09/mi
3:18:19
↑ 64↓ 500.2%
21M
13:19/mi
3:31:38
↑ 106↓ 241.6%
35K· 21.75 mi
10:50/mi
3:39:44
↑ 17↓ 861.7%
23M
11:09/mi
3:53:42
↑ 23↓ 630.6%
24M
10:23/mi
4:04:05
↓ 821.3%
40K· 24.85 mi
11:05/mi
4:13:34
↓ 200.3%
25.2M
12:14/mi
4:17:47
↑ 13↓ 160.2%
Finish· 26.22 mi
9:01/mi
4:26:58
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:58:42
Pace9:03 /mi
2nd Half
Distance13.11 mi
Time2:28:16
Pace11:19 /mi
📊Positive Split: 24.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:3826:508:3826:50
8:38
-
10K
6.21 mi11:50:0654:188:4427:28
8:50
+0:12
15K
9.32 mi12:18:101:22:228:5028:04
9:02
+0:12
20K
12.43 mi12:47:491:52:019:0129:39
9:33
+0:31
Half
13.11 mi12:54:301:58:429:036:41
9:48
+0:15
25K
15.53 mi13:19:402:23:529:1625:10
10:23
+0:35
30K
18.64 mi13:57:373:01:499:4537:57
12:13
+1:50
20M
20.00 mi14:14:073:18:199:5516:30
12:09
-0:04
21M
21.00 mi14:27:263:31:3810:0513:19
13:19
+1:10
35K
21.75 mi14:35:323:39:4410:068:06
10:50
-2:29
23M
23.00 mi14:49:303:53:4210:1013:58
11:09
+0:19
24M
24.00 mi14:59:534:04:0510:1010:23
10:23
-0:46
40K
24.85 mi15:09:224:13:3410:129:29
11:05
+0:42
25.2M
25.20 mi15:13:354:17:4710:144:13
12:14
+1:09
Finish
26.22 mi15:22:464:26:5810:119:11
9:01
-3:13

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

8:38 /mi

Average Pace

10:11 /mi

Slowest Pace

13:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:01:12

45% of race

Time at Steady Pace

59:49

22% of race

Time at Slower Pace

1:25:57

32% of race

Average Pace: 10:11 /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 mi11:22:3826:508:3826:50
8:38
#20701
10K
6.21 mi11:50:0654:188:4427:28
8:50
#21104
15K
9.32 mi12:18:101:22:228:5028:04
9:02
#21472
20K
12.43 mi12:47:491:52:019:0129:39
9:33
#21996
Half
13.11 mi12:54:301:58:429:036:41
9:48
#22162
25K
15.53 mi13:19:402:23:529:1625:10
10:23
#22659
30K
18.64 mi13:57:373:01:499:4537:57
12:13
#23540
20M
20.00 mi14:14:073:18:199:5516:30
12:09
#23775
21M
21.00 mi14:27:263:31:3810:0513:19
13:19
#23931
35K
21.75 mi14:35:323:39:4410:068:06
10:50
#23938
23M
23.00 mi14:49:303:53:4210:1013:58
11:09
#23898
24M
24.00 mi14:59:534:04:0510:1010:23
10:23
#23845
40K
24.85 mi15:09:224:13:3410:129:29
11:05
#23816
25.2M
25.20 mi15:13:354:17:4710:144:13
12:14
#23822
Finish
26.22 mi15:22:464:26:5810:119:11
9:01
#23699
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi207017917791722200(Top 78%)8667(Top 71%)8667(Top 478%)
10K6.21 mi3.10 mi21104-4038111-1948111-19421614(Top 76%)8377(Top 69%)8377(Top 462%)
15K9.32 mi3.11 mi21472-3688288-1778288-17722200(Top 78%)8667(Top 71%)8667(Top 478%)
20K12.43 mi3.11 mi21996-5248598-3108598-31023038(Top 81%)9171(Top 75%)9171(Top 506%)
Half13.11 mi0.68 mi22162-1668687-898687-8924382(Top 86%)9926(Top 81%)9926(Top 547%)
25K15.53 mi2.42 mi22659-4978953-2668953-26624140(Top 85%)9821(Top 80%)9821(Top 542%)
30K18.64 mi3.11 mi23540-8819480-5279480-52725840(Top 91%)10858(Top 89%)10858(Top 599%)
20M20.00 mi1.36 mi23775-2359631-1519631-15125465(Top 90%)10732(Top 88%)10732(Top 592%)
21M21.00 mi1.00 mi23931-1569726-959726-9525471(Top 90%)10792(Top 88%)10792(Top 595%)
35K21.75 mi0.75 mi23938-79750-249750-2423883(Top 84%)9986(Top 82%)9986(Top 551%)
23M23.00 mi1.25 mi23898+409751-19751-123575(Top 83%)9889(Top 81%)9889(Top 545%)
24M24.00 mi1.00 mi23845+539728+239728+2322505(Top 79%)9399(Top 77%)9399(Top 518%)
40K24.85 mi0.85 mi23816+299727+19727+123359(Top 82%)9881(Top 81%)9881(Top 545%)
25.2M25.20 mi0.35 mi23822-69736-99736-923686(Top 83%)10018(Top 82%)10018(Top 553%)
Finish26.22 mi1.02 mi23699+1239682+549682+5419156(Top 67%)7706(Top 63%)7706(Top 425%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21story building
+97ft-345ft

Overall

22200

Females

8667

F45-49

8667

5K→10K

3.1 - 6.2 mi

Top 76%
×5story building
+79ft-138ft

Overall

21614

Females

8377

F45-49

8377

10K→15K

6.2 - 9.3 mi

Top 78%
×3story building
+67ft-78ft

Overall

22200

Females

8667

F45-49

8667

15K→20K

9.3 - 12.4 mi

Top 81%
×5story building
+106ft-86ft

Overall

23038

Females

9171

F45-49

9171

20K→Half

12.4 - 13.1 mi

Top 86%
×2story building
+19ft-37ft

Overall

24382

Females

9926

F45-49

9926

Half→25K

13.1 - 15.5 mi

Top 85%
×4story building
+66ft-88ft

Overall

24140

Females

9821

F45-49

9821

25K→30K

15.5 - 18.6 mi

Top 91%
×9story building
+181ft-148ft

Overall

25840

Females

10858

F45-49

10858

30K→20M

18.6 - 20.0 mi

Top 90%
×5story building
+64ft-50ft

Overall

25465

Females

10732

F45-49

10732

20M→21M

20.0 - 21.0 mi

Top 90%
×8story building
+106ft-24ft

Overall

25471

Females

10792

F45-49

10792

21M→35K

21.0 - 21.8 mi

Top 84%
×7story building
+17ft-86ft

Overall

23883

Females

9986

F45-49

9986

35K→23M

21.8 - 23.0 mi

Top 83%
×5story building
+23ft-63ft

Overall

23575

Females

9889

F45-49

9889

23M→24M

23.0 - 24.0 mi

Top 79%
×6story building
+12ft-82ft

Overall

22505

Females

9399

F45-49

9399

24M→40K

24.0 - 24.9 mi

Top 82%
×1story
+6ft-20ft

Overall

23359

Females

9881

F45-49

9881

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

23686

Females

10018

F45-49

10018

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2story building
+22ft-21ft

Overall

19156

Females

7706

F45-49

7706

Passing Analysis

Category:
Athletes Passed
821
Passed By
3819
Net Change
-2998
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20701
5K → 10K117520-403#20701#21104
10K → 15K109477-368#21104#21472
15K → 20K76600-524#21472#21996
20K → Half5171-166#21996#22162
Half → 25K37534-497#22162#22659
25K → 30K24905-881#22659#23540
30K → 20M31266-235#23540#23775
20M → 21M26182-156#23775#23931
21M → 35K4754-7#23931#23938
35K → 23M8444+40#23938#23898
23M → 24M6815+53#23898#23845
24M → 40K5627+29#23845#23816
40K → 25.2M1723-6#23816#23822
25.2M → Finish1241+123#23822#23699
TOTALS8213819-2998
📊

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