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BOSTON MARATHON 2025

Sarah Mulcahy

Bib: 3858•F

ME

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 7%
Gender (Female)
#0 / 12228
Top 0.8%
Division (F18-39)
#0 / 5469
Top 2%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:56
Rank: #3250
Start → 5K
19:56 | 6:25/mi
10K· 6.21 mi
39:45
Rank: #3055 (+195)
5K → 10K
19:49 | 6:23/mi
15K· 9.32 mi
59:23
Rank: #2822 (+233)
10K → 15K
19:38 | 6:19/mi
20K· 12.43 mi
1:19:09
Rank: #2667 (+155)
15K → 20K
19:46 | 6:22/mi
Half· 13.11 mi
1:23:28
Rank: #2663 (+4)
20K → Half
4:19 | 6:20/mi
25K· 15.53 mi
1:38:47
Rank: #2515 (+148)
Half → 25K
15:19 | 6:19/mi
30K· 18.64 mi
1:59:01
Rank: #2358 (+157)
25K → 30K
20:14 | 6:31/mi
20M
2:07:55
Rank: #2297 (+61)
30K → 20M
8:54 | 6:33/mi
21M
2:14:53
Rank: #2259 (+38)
20M → 21M
6:58 | 6:58/mi
35K· 21.75 mi
2:19:43
Rank: #2244 (+15)
21M → 35K
4:50 | 6:28/mi
23M
2:27:54
Rank: #2172 (+72)
35K → 23M
8:11 | 6:32/mi
24M
2:34:20
Rank: #2120 (+52)
23M → 24M
6:26 | 6:26/mi
40K· 24.85 mi
2:39:53
Rank: #2055 (+65)
24M → 40K
5:33 | 6:29/mi
25.2M
2:42:22
Rank: #2046 (+9)
40K → 25.2M
2:29 | 7:12/mi
Finish· 26.22 mi
2:48:52
Rank: #2050 (-4)
25.2M → Finish
6:30 | 6:23/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:28
Pace6:22 /mi
2nd Half
Distance13.11 mi
Time1:25:24
Pace6:31 /mi
📊Positive Split: 2.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:0719:566:2519:56
6:25
-
10K
6.21 mi10:41:5639:456:2419:49
6:23
-0:02
15K
9.32 mi11:01:3459:236:2219:38
6:19
-0:04
20K
12.43 mi11:21:201:19:096:2219:46
6:22
+0:03
Half
13.11 mi11:25:391:23:286:224:19
6:20
-0:02
25K
15.53 mi11:40:581:38:476:2215:19
6:19
-0:01
30K
18.64 mi12:01:121:59:016:2320:14
6:31
+0:12
20M
20.00 mi12:10:062:07:556:248:54
6:33
+0:02
21M
21.00 mi12:17:042:14:536:256:58
6:58
+0:25
35K
21.75 mi12:21:542:19:436:254:50
6:28
-0:30
23M
23.00 mi12:30:052:27:546:268:11
6:32
+0:04
24M
24.00 mi12:36:312:34:206:266:26
6:26
-0:06
40K
24.85 mi12:42:042:39:536:265:33
6:29
+0:03
25.2M
25.20 mi12:44:332:42:226:272:29
7:12
+0:43
Finish
26.22 mi12:51:032:48:526:276:30
6:23
-0:49

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

6:19 /mi

Average Pace

6:27 /mi

Slowest Pace

7:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:39:25

94% of race

Time at Steady Pace

9:27

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:26 /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 mi10:22:0719:566:2519:56
6:25
#3250
10K
6.21 mi10:41:5639:456:2419:49
6:23
#3055
15K
9.32 mi11:01:3459:236:2219:38
6:19
#2822
20K
12.43 mi11:21:201:19:096:2219:46
6:22
#2667
Half
13.11 mi11:25:391:23:286:224:19
6:20
#2663
25K
15.53 mi11:40:581:38:476:2215:19
6:19
#2515
30K
18.64 mi12:01:121:59:016:2320:14
6:31
#2358
20M
20.00 mi12:10:062:07:556:248:54
6:33
#2297
21M
21.00 mi12:17:042:14:536:256:58
6:58
#2259
35K
21.75 mi12:21:542:19:436:254:50
6:28
#2244
23M
23.00 mi12:30:052:27:546:268:11
6:32
#2172
24M
24.00 mi12:36:312:34:206:266:26
6:26
#2120
40K
24.85 mi12:42:042:39:536:265:33
6:29
#2055
25.2M
25.20 mi12:44:332:42:226:272:29
7:12
#2046
Finish
26.22 mi12:51:032:48:526:276:30
6:23
#2050
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi32501561562470(Top 9%)105(Top 0.9%)105(Top 2%)
10K6.21 mi3.10 mi3055+195142+14142+142917(Top 10%)133(Top 1%)133(Top 2%)
15K9.32 mi3.11 mi2822+233125+17125+172470(Top 9%)105(Top 0.9%)105(Top 2%)
20K12.43 mi3.11 mi2667+155117+8117+82336(Top 8%)102(Top 0.8%)102(Top 2%)
Half13.11 mi0.68 mi2663+4116+1116+12725(Top 10%)114(Top 0.9%)114(Top 2%)
25K15.53 mi2.42 mi2515+148108+8108+81969(Top 7%)89(Top 0.7%)89(Top 2%)
30K18.64 mi3.11 mi2358+157101+7101+72041(Top 7%)94(Top 0.8%)94(Top 2%)
20M20.00 mi1.36 mi2297+6199+299+21836(Top 6%)91(Top 0.7%)91(Top 2%)
21M21.00 mi1.00 mi2259+3897+297+22153(Top 8%)128(Top 1%)128(Top 2%)
35K21.75 mi0.75 mi2244+1599-299-22326(Top 8%)141(Top 1%)141(Top 3%)
23M23.00 mi1.25 mi2172+7298+198+11604(Top 6%)97(Top 0.8%)97(Top 2%)
24M24.00 mi1.00 mi2120+5298981819(Top 6%)118(Top 1.0%)118(Top 2%)
40K24.85 mi0.85 mi2055+6598981600(Top 6%)110(Top 0.9%)110(Top 2%)
25.2M25.20 mi0.35 mi2046+999-199-12212(Top 8%)205(Top 2%)205(Top 4%)
Finish26.22 mi1.02 mi2050-499992246(Top 8%)180(Top 1%)180(Top 3%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 9%
×21stories
+97ft-345ft

Overall

2470

Females

105

F18-39

105

5K→10K

3.1 - 6.2 mi

Top 10%
×5stories
+79ft-138ft

Overall

2917

Females

133

F18-39

133

10K→15K

6.2 - 9.3 mi

Top 9%
×3stories
+67ft-78ft

Overall

2470

Females

105

F18-39

105

15K→20K

9.3 - 12.4 mi

Top 8%
×5stories
+106ft-86ft

Overall

2336

Females

102

F18-39

102

20K→Half

12.4 - 13.1 mi

Top 10%
×2stories
+19ft-37ft

Overall

2725

Females

114

F18-39

114

Half→25K

13.1 - 15.5 mi

Top 7%
×4stories
+66ft-88ft

Overall

1969

Females

89

F18-39

89

25K→30K

15.5 - 18.6 mi

Top 7%
×9stories
+181ft-148ft

Overall

2041

Females

94

F18-39

94

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1836

Females

91

F18-39

91

20M→21M

20.0 - 21.0 mi

Top 8%
×8stories
+106ft-24ft

Overall

2153

Females

128

F18-39

128

21M→35K

21.0 - 21.8 mi

Top 8%
×7stories
+17ft-86ft

Overall

2326

Females

141

F18-39

141

35K→23M

21.8 - 23.0 mi

Top 6%
×5stories
+23ft-63ft

Overall

1604

Females

97

F18-39

97

23M→24M

23.0 - 24.0 mi

Top 6%
×6stories
+12ft-82ft

Overall

1819

Females

118

F18-39

118

24M→40K

24.0 - 24.9 mi

Top 6%
×1story
+6ft-20ft

Overall

1600

Females

110

F18-39

110

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2212

Females

205

F18-39

205

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2stories
+22ft-21ft

Overall

2246

Females

180

F18-39

180

Passing Analysis

Category:
Athletes Passed
1443
Passed By
243
Net Change
+1200
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3250
5K → 10K25358+195#3250#3055
10K → 15K24512+233#3055#2822
15K → 20K17015+155#2822#2667
20K → Half1814+4#2667#2663
Half → 25K1546+148#2663#2515
25K → 30K18629+157#2515#2358
30K → 20M709+61#2358#2297
20M → 21M5921+38#2297#2259
21M → 35K2510+15#2259#2244
35K → 23M819+72#2244#2172
23M → 24M6311+52#2172#2120
24M → 40K716+65#2120#2055
40K → 25.2M178+9#2055#2046
25.2M → Finish3135-4#2046#2050
TOTALS1443243+1200
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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