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BOSTON MARATHON 2025

Katie Shanahan

Bib: 29750•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F40-44)
#0 / 1718
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
11:07/mi
34:33
↑ 97↓ 3451.5%
10K· 6.21 mi
11:56/mi
1:11:38
↑ 79↓ 1380.4%
15K· 9.32 mi
12:44/mi
1:51:13
↑ 67↓ 78
20K· 12.43 mi
13:23/mi
2:32:48
↑ 106↓ 860.1%
Half· 13.11 mi
12:35/mi
2:41:23
↑ 19↓ 370.5%
25K· 15.53 mi
13:47/mi
3:14:47
↑ 66↓ 880.2%
30K· 18.64 mi
14:13/mi
3:58:58
↑ 181↓ 1480.2%
20M
13:42/mi
4:17:35
↑ 64↓ 500.2%
21M
15:03/mi
4:32:38
↑ 106↓ 241.6%
35K· 21.75 mi
12:54/mi
4:42:17
↑ 17↓ 861.7%
23M
13:55/mi
4:59:42
↑ 23↓ 630.6%
24M
12:57/mi
5:12:39
↓ 821.3%
40K· 24.85 mi
14:49/mi
5:25:19
↓ 200.3%
25.2M
15:40/mi
5:30:43
↑ 13↓ 160.2%
Finish· 26.22 mi
12:43/mi
5:43:41
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:41:23
Pace12:19 /mi
2nd Half
Distance13.11 mi
Time3:02:18
Pace13:54 /mi
📊Positive Split: 13.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:5034:3311:0734:33
11:07
-
10K
6.21 mi12:29:551:11:3811:3237:05
11:56
+0:49
15K
9.32 mi13:09:301:51:1311:5639:35
12:44
+0:48
20K
12.43 mi13:51:052:32:4812:1841:35
13:23
+0:39
Half
13.11 mi13:59:402:41:2312:198:35
12:35
-0:48
25K
15.53 mi14:33:043:14:4712:3233:24
13:47
+1:12
30K
18.64 mi15:17:153:58:5812:4944:11
14:13
+0:26
20M
20.00 mi15:35:524:17:3512:5318:37
13:42
-0:31
21M
21.00 mi15:50:554:32:3812:5915:03
15:03
+1:21
35K
21.75 mi16:00:344:42:1712:599:39
12:54
-2:09
23M
23.00 mi16:17:594:59:4213:0217:25
13:55
+1:01
24M
24.00 mi16:30:565:12:3913:0212:57
12:57
-0:58
40K
24.85 mi16:43:365:25:1913:0512:40
14:49
+1:52
25.2M
25.20 mi16:49:005:30:4313:075:24
15:40
+0:51
Finish
26.22 mi17:01:585:43:4113:0712:58
12:43
-2:57

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

11:07 /mi

Average Pace

13:07 /mi

Slowest Pace

15:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:12:46

39% of race

Time at Steady Pace

2:13:37

39% of race

Time at Slower Pace

1:17:18

22% of race

Average Pace: 13:06 /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 mi11:52:5034:3311:0734:33
11:07
#27678
10K
6.21 mi12:29:551:11:3811:3237:05
11:56
#27844
15K
9.32 mi13:09:301:51:1311:5639:35
12:44
#27970
20K
12.43 mi13:51:052:32:4812:1841:35
13:23
#28001
Half
13.11 mi13:59:402:41:2312:198:35
12:35
#27986
25K
15.53 mi14:33:043:14:4712:3233:24
13:47
#27972
30K
18.64 mi15:17:153:58:5812:4944:11
14:13
#27950
20M
20.00 mi15:35:524:17:3512:5318:37
13:42
#27911
21M
21.00 mi15:50:554:32:3812:5915:03
15:03
#27891
35K
21.75 mi16:00:344:42:1712:599:39
12:54
#27880
23M
23.00 mi16:17:594:59:4213:0217:25
13:55
#27856
24M
24.00 mi16:30:565:12:3913:0212:57
12:57
#27827
40K
24.85 mi16:43:365:25:1913:0512:40
14:49
#27832
25.2M
25.20 mi16:49:005:30:4313:075:24
15:40
#27837
Finish
26.22 mi17:01:585:43:4113:0712:58
12:43
#27841
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi27678117541175428064(Top 99%)12017(Top 98%)12017(Top 699%)
10K6.21 mi3.10 mi27844-16611856-10211856-10227897(Top 98%)11906(Top 97%)11906(Top 693%)
15K9.32 mi3.11 mi27970-12611952-9611952-9628064(Top 99%)12017(Top 98%)12017(Top 699%)
20K12.43 mi3.11 mi28001-3111978-2611978-2628017(Top 99%)12006(Top 98%)12006(Top 699%)
Half13.11 mi0.68 mi27986+1511969+911969+927800(Top 98%)11890(Top 97%)11890(Top 692%)
25K15.53 mi2.42 mi27972+1411959+1011959+1027776(Top 98%)11876(Top 97%)11876(Top 691%)
30K18.64 mi3.11 mi27950+2211957+211957+227666(Top 97%)11874(Top 97%)11874(Top 691%)
20M20.00 mi1.36 mi27911+3911941+1611941+1627074(Top 95%)11600(Top 95%)11600(Top 675%)
21M21.00 mi1.00 mi27891+2011936+511936+527190(Top 96%)11670(Top 95%)11670(Top 679%)
35K21.75 mi0.75 mi27880+1111931+511931+526862(Top 95%)11523(Top 94%)11523(Top 671%)
23M23.00 mi1.25 mi27856+2411929+211929+227241(Top 96%)11728(Top 96%)11728(Top 683%)
24M24.00 mi1.00 mi27827+2911911+1811911+1826800(Top 94%)11535(Top 94%)11535(Top 671%)
40K24.85 mi0.85 mi27832-511921-1011921-1027681(Top 97%)11957(Top 98%)11957(Top 696%)
25.2M25.20 mi0.35 mi27837-511930-911930-927536(Top 97%)11908(Top 97%)11908(Top 693%)
Finish26.22 mi1.02 mi27841-411938-811938-827436(Top 97%)11840(Top 97%)11840(Top 689%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 99%
×21story building
+97ft-345ft

Overall

28064

Females

12017

F40-44

12017

5K→10K

3.1 - 6.2 mi

Top 98%
×5story building
+79ft-138ft

Overall

27897

Females

11906

F40-44

11906

10K→15K

6.2 - 9.3 mi

Top 99%
×3story building
+67ft-78ft

Overall

28064

Females

12017

F40-44

12017

15K→20K

9.3 - 12.4 mi

Top 99%
×5story building
+106ft-86ft

Overall

28017

Females

12006

F40-44

12006

20K→Half

12.4 - 13.1 mi

Top 98%
×2story building
+19ft-37ft

Overall

27800

Females

11890

F40-44

11890

Half→25K

13.1 - 15.5 mi

Top 98%
×4story building
+66ft-88ft

Overall

27776

Females

11876

F40-44

11876

25K→30K

15.5 - 18.6 mi

Top 97%
×9story building
+181ft-148ft

Overall

27666

Females

11874

F40-44

11874

30K→20M

18.6 - 20.0 mi

Top 95%
×5story building
+64ft-50ft

Overall

27074

Females

11600

F40-44

11600

20M→21M

20.0 - 21.0 mi

Top 96%
×8story building
+106ft-24ft

Overall

27190

Females

11670

F40-44

11670

21M→35K

21.0 - 21.8 mi

Top 95%
×7story building
+17ft-86ft

Overall

26862

Females

11523

F40-44

11523

35K→23M

21.8 - 23.0 mi

Top 96%
×5story building
+23ft-63ft

Overall

27241

Females

11728

F40-44

11728

23M→24M

23.0 - 24.0 mi

Top 94%
×6story building
+12ft-82ft

Overall

26800

Females

11535

F40-44

11535

24M→40K

24.0 - 24.9 mi

Top 97%
×1story
+6ft-20ft

Overall

27681

Females

11957

F40-44

11957

40K→25.2M

24.9 - 25.2 mi

Top 97%
×1story
+13ft-16ft

Overall

27536

Females

11908

F40-44

11908

25.2M→Finish

25.2 - 26.2 mi

Top 97%
×2story building
+22ft-21ft

Overall

27436

Females

11840

F40-44

11840

Passing Analysis

Category:
Athletes Passed
386
Passed By
549
Net Change
-163
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#27678
5K → 10K38204-166#27678#27844
10K → 15K20146-126#27844#27970
15K → 20K2455-31#27970#28001
20K → Half194+15#28001#27986
Half → 25K4733+14#27986#27972
25K → 30K5432+22#27972#27950
30K → 20M467+39#27950#27911
20M → 21M3313+20#27911#27891
21M → 35K165+11#27891#27880
35K → 23M328+24#27880#27856
23M → 24M323+29#27856#27827
24M → 40K1015-5#27827#27832
40K → 25.2M611-5#27832#27837
25.2M → Finish913-4#27837#27841
TOTALS386549-163
📊

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