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BOSTON MARATHON 2025

Shannon Calamari-Kirwan

Bib: 26994•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
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
10:34/mi
32:49
↑ 97↓ 3451.5%
10K· 6.21 mi
10:57/mi
1:06:50
↑ 79↓ 1380.4%
15K· 9.32 mi
10:44/mi
1:40:10
↑ 67↓ 78
20K· 12.43 mi
11:00/mi
2:14:21
↑ 106↓ 860.1%
Half· 13.11 mi
12:30/mi
2:22:53
↑ 19↓ 370.5%
25K· 15.53 mi
11:12/mi
2:50:03
↑ 66↓ 880.2%
30K· 18.64 mi
14:18/mi
3:34:30
↑ 181↓ 1480.2%
20M
14:06/mi
3:53:39
↑ 64↓ 500.2%
21M
15:32/mi
4:09:11
↑ 106↓ 241.6%
35K· 21.75 mi
13:26/mi
4:19:14
↑ 17↓ 861.7%
23M
13:05/mi
4:35:37
↑ 23↓ 630.6%
24M
13:13/mi
4:48:50
↓ 821.3%
40K· 24.85 mi
14:02/mi
5:00:50
↓ 200.3%
25.2M
13:41/mi
5:05:33
↑ 13↓ 160.2%
Finish· 26.22 mi
11:16/mi
5:17:02
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:22:53
Pace10:54 /mi
2nd Half
Distance13.11 mi
Time2:54:09
Pace13:17 /mi
📊Positive Split: 21.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:58:1732:4910:3432:49
10:34
-
10K
6.21 mi12:32:181:06:5010:4534:01
10:57
+0:23
15K
9.32 mi13:05:381:40:1010:4533:20
10:44
-0:13
20K
12.43 mi13:39:492:14:2110:4934:11
11:00
+0:16
Half
13.11 mi13:48:212:22:5310:548:32
12:30
+1:30
25K
15.53 mi14:15:312:50:0310:5727:10
11:12
-1:18
30K
18.64 mi14:59:583:34:3011:3044:27
14:18
+3:06
20M
20.00 mi15:19:073:53:3911:4119:09
14:06
-0:12
21M
21.00 mi15:34:394:09:1111:5215:32
15:32
+1:26
35K
21.75 mi15:44:424:19:1411:5510:03
13:26
-2:06
23M
23.00 mi16:01:054:35:3711:5916:23
13:05
-0:21
24M
24.00 mi16:14:184:48:5012:0213:13
13:13
+0:08
40K
24.85 mi16:26:185:00:5012:0612:00
14:02
+0:49
25.2M
25.20 mi16:31:015:05:3312:084:43
13:41
-0:21
Finish
26.22 mi16:42:305:17:0212:0611:29
11:16
-2:25

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

10:34 /mi

Average Pace

12:06 /mi

Slowest Pace

15:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:53:00

55% of race

Time at Steady Pace

52:54

17% of race

Time at Slower Pace

1:31:08

29% of race

Average Pace: 12:05 /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 mi11:58:1732:4910:3432:49
10:34
#26891
10K
6.21 mi12:32:181:06:5010:4534:01
10:57
#26940
15K
9.32 mi13:05:381:40:1010:4533:20
10:44
#26700
20K
12.43 mi13:39:492:14:2110:4934:11
11:00
#26506
Half
13.11 mi13:48:212:22:5310:548:32
12:30
#26621
25K
15.53 mi14:15:312:50:0310:5727:10
11:12
#26416
30K
18.64 mi14:59:583:34:3011:3044:27
14:18
#26779
20M
20.00 mi15:19:073:53:3911:4119:09
14:06
#26877
21M
21.00 mi15:34:394:09:1111:5215:32
15:32
#26943
35K
21.75 mi15:44:424:19:1411:5510:03
13:26
#26976
23M
23.00 mi16:01:054:35:3711:5916:23
13:05
#26963
24M
24.00 mi16:14:184:48:5012:0213:13
13:13
#26973
40K
24.85 mi16:26:185:00:5012:0612:00
14:02
#26976
25.2M
25.20 mi16:31:015:05:3312:084:43
13:41
#26971
Finish
26.22 mi16:42:305:17:0212:0611:29
11:16
#26936
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi26891112611126126297(Top 93%)10943(Top 89%)10943(Top 200%)
10K6.21 mi3.10 mi26940-4911308-4711308-4726993(Top 95%)11369(Top 93%)11369(Top 208%)
15K9.32 mi3.11 mi26700+24011171+13711171+13726297(Top 93%)10943(Top 89%)10943(Top 200%)
20K12.43 mi3.11 mi26506+19411071+10011071+10025996(Top 92%)10810(Top 88%)10810(Top 198%)
Half13.11 mi0.68 mi26621-11511137-6611137-6627758(Top 98%)11859(Top 97%)11859(Top 217%)
25K15.53 mi2.42 mi26416+20511026+11111026+11125479(Top 90%)10557(Top 86%)10557(Top 193%)
30K18.64 mi3.11 mi26779-36311273-24711273-24727718(Top 98%)11902(Top 97%)11902(Top 218%)
20M20.00 mi1.36 mi26877-9811336-6311336-6327359(Top 96%)11743(Top 96%)11743(Top 215%)
21M21.00 mi1.00 mi26943-6611379-4311379-4327552(Top 97%)11840(Top 97%)11840(Top 216%)
35K21.75 mi0.75 mi26976-3311401-2211401-2227313(Top 96%)11748(Top 96%)11748(Top 215%)
23M23.00 mi1.25 mi26963+13114011140126473(Top 93%)11333(Top 93%)11333(Top 207%)
24M24.00 mi1.00 mi26973-1011413-1211413-1227063(Top 95%)11668(Top 95%)11668(Top 213%)
40K24.85 mi0.85 mi26976-311428-1511428-1527196(Top 96%)11743(Top 96%)11743(Top 215%)
25.2M25.20 mi0.35 mi26971+511426+211426+225874(Top 91%)11124(Top 91%)11124(Top 203%)
Finish26.22 mi1.02 mi26936+3511411+1511411+1525812(Top 91%)11054(Top 90%)11054(Top 202%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 93%
×21story building
+97ft-345ft

Overall

26297

Females

10943

F18-39

10943

5K→10K

3.1 - 6.2 mi

Top 95%
×5story building
+79ft-138ft

Overall

26993

Females

11369

F18-39

11369

10K→15K

6.2 - 9.3 mi

Top 93%
×3story building
+67ft-78ft

Overall

26297

Females

10943

F18-39

10943

15K→20K

9.3 - 12.4 mi

Top 92%
×5story building
+106ft-86ft

Overall

25996

Females

10810

F18-39

10810

20K→Half

12.4 - 13.1 mi

Top 98%
×2story building
+19ft-37ft

Overall

27758

Females

11859

F18-39

11859

Half→25K

13.1 - 15.5 mi

Top 90%
×4story building
+66ft-88ft

Overall

25479

Females

10557

F18-39

10557

25K→30K

15.5 - 18.6 mi

Top 98%
×9story building
+181ft-148ft

Overall

27718

Females

11902

F18-39

11902

30K→20M

18.6 - 20.0 mi

Top 96%
×5story building
+64ft-50ft

Overall

27359

Females

11743

F18-39

11743

20M→21M

20.0 - 21.0 mi

Top 97%
×8story building
+106ft-24ft

Overall

27552

Females

11840

F18-39

11840

21M→35K

21.0 - 21.8 mi

Top 96%
×7story building
+17ft-86ft

Overall

27313

Females

11748

F18-39

11748

35K→23M

21.8 - 23.0 mi

Top 93%
×5story building
+23ft-63ft

Overall

26473

Females

11333

F18-39

11333

23M→24M

23.0 - 24.0 mi

Top 95%
×6story building
+12ft-82ft

Overall

27063

Females

11668

F18-39

11668

24M→40K

24.0 - 24.9 mi

Top 96%
×1story
+6ft-20ft

Overall

27196

Females

11743

F18-39

11743

40K→25.2M

24.9 - 25.2 mi

Top 91%
×1story
+13ft-16ft

Overall

25874

Females

11124

F18-39

11124

25.2M→Finish

25.2 - 26.2 mi

Top 91%
×2story building
+22ft-21ft

Overall

25812

Females

11054

F18-39

11054

Passing Analysis

Category:
Athletes Passed
1024
Passed By
1069
Net Change
-45
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26891
5K → 10K140189-49#26891#26940
10K → 15K26323+240#26940#26700
15K → 20K22430+194#26700#26506
20K → Half4119-115#26506#26621
Half → 25K21510+205#26621#26416
25K → 30K19382-363#26416#26779
30K → 20M13111-98#26779#26877
20M → 21M975-66#26877#26943
21M → 35K942-33#26943#26976
35K → 23M3724+13#26976#26963
23M → 24M1929-10#26963#26973
24M → 40K2326-3#26973#26976
40K → 25.2M83+5#26976#26971
25.2M → Finish416+35#26971#26936
TOTALS10241069-45
📊

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