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BOSTON MARATHON 2025

Colleen Iacofano

Bib: 25637•F

OH

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F70-74)
#0 / 71
Top 38%
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
10:58/mi
34:05
↑ 97↓ 3451.5%
10K· 6.21 mi
10:27/mi
1:06:32
↑ 79↓ 1380.4%
15K· 9.32 mi
10:35/mi
1:39:26
↑ 67↓ 78
20K· 12.43 mi
10:26/mi
2:11:50
↑ 106↓ 860.1%
Half· 13.11 mi
10:07/mi
2:18:44
↑ 19↓ 370.5%
25K· 15.53 mi
10:19/mi
2:43:45
↑ 66↓ 880.2%
30K· 18.64 mi
10:38/mi
3:16:46
↑ 181↓ 1480.2%
20M
10:45/mi
3:31:22
↑ 64↓ 500.2%
21M
11:21/mi
3:42:43
↑ 106↓ 241.6%
35K· 21.75 mi
10:43/mi
3:50:44
↑ 17↓ 861.7%
23M
11:03/mi
4:04:34
↑ 23↓ 630.6%
24M
10:44/mi
4:15:18
↓ 821.3%
40K· 24.85 mi
11:01/mi
4:24:43
↓ 200.3%
25.2M
12:05/mi
4:28:53
↑ 13↓ 160.2%
Finish· 26.22 mi
10:55/mi
4:40:00
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:18:44
Pace10:35 /mi
2nd Half
Distance13.11 mi
Time2:21:16
Pace10:47 /mi
📊Positive Split: 1.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:1034:0510:5834:05
10:58
-
10K
6.21 mi12:21:371:06:3210:4232:27
10:27
-0:31
15K
9.32 mi12:54:311:39:2610:4032:54
10:35
+0:08
20K
12.43 mi13:26:552:11:5010:3632:24
10:26
-0:09
Half
13.11 mi13:33:492:18:4410:356:54
10:07
-0:19
25K
15.53 mi13:58:502:43:4510:3225:01
10:19
+0:12
30K
18.64 mi14:31:513:16:4610:3333:01
10:38
+0:19
20M
20.00 mi14:46:273:31:2210:3414:36
10:45
+0:07
21M
21.00 mi14:57:483:42:4310:3611:21
11:21
+0:36
35K
21.75 mi15:05:493:50:4410:378:01
10:43
-0:38
23M
23.00 mi15:19:394:04:3410:3813:50
11:03
+0:20
24M
24.00 mi15:30:234:15:1810:3810:44
10:44
-0:19
40K
24.85 mi15:39:484:24:4310:399:25
11:01
+0:17
25.2M
25.20 mi15:43:584:28:5310:404:10
12:05
+1:04
Finish
26.22 mi15:55:054:40:0010:4111:07
10:55
-1:10

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

10:07 /mi

Average Pace

10:41 /mi

Slowest Pace

12:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

4:24:29

94% of race

Time at Steady Pace

11:21

4% of race

Time at Slower Pace

4:10

1% of race

Average Pace: 10:41 /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 mi11:49:1034:0510:5834:05
10:58
#27530
10K
6.21 mi12:21:371:06:3210:4232:27
10:27
#26861
15K
9.32 mi12:54:311:39:2610:4032:54
10:35
#26581
20K
12.43 mi13:26:552:11:5010:3632:24
10:26
#26175
Half
13.11 mi13:33:492:18:4410:356:54
10:07
#26111
25K
15.53 mi13:58:502:43:4510:3225:01
10:19
#25758
30K
18.64 mi14:31:513:16:4610:3333:01
10:38
#25338
20M
20.00 mi14:46:273:31:2210:3414:36
10:45
#25195
21M
21.00 mi14:57:483:42:4310:3611:21
11:21
#25056
35K
21.75 mi15:05:493:50:4410:378:01
10:43
#25039
23M
23.00 mi15:19:394:04:3410:3813:50
11:03
#24944
24M
24.00 mi15:30:234:15:1810:3810:44
10:44
#24899
40K
24.85 mi15:39:484:24:4310:399:25
11:01
#24840
25.2M
25.20 mi15:43:584:28:5310:404:10
12:05
#24820
Finish
26.22 mi15:55:054:40:0010:4111:07
10:55
#24852
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF70-74Seg. OverallSeg. FemalesSeg. F70-74
5K3.11 mi3.11 mi27530116641166426072(Top 92%)10828(Top 89%)10828(Top 15251%)
10K6.21 mi3.10 mi26861+66911257+40711257+40726166(Top 92%)10887(Top 89%)10887(Top 15334%)
15K9.32 mi3.11 mi26581+28011103+15411103+15426072(Top 92%)10828(Top 89%)10828(Top 15251%)
20K12.43 mi3.11 mi26175+40610873+23010873+23025069(Top 88%)10302(Top 84%)10302(Top 14510%)
Half13.11 mi0.68 mi26111+6410846+2710846+2725035(Top 88%)10282(Top 84%)10282(Top 14482%)
25K15.53 mi2.42 mi25758+35310665+18110665+18123987(Top 84%)9735(Top 80%)9735(Top 13711%)
30K18.64 mi3.11 mi25338+42010471+19410471+19423214(Top 82%)9446(Top 77%)9446(Top 13304%)
20M20.00 mi1.36 mi25195+14310409+6210409+6223042(Top 81%)9447(Top 77%)9447(Top 13306%)
21M21.00 mi1.00 mi25056+13910334+7510334+7522254(Top 78%)9115(Top 75%)9115(Top 12838%)
35K21.75 mi0.75 mi25039+1710337-310337-323588(Top 83%)9854(Top 81%)9854(Top 13879%)
23M23.00 mi1.25 mi24944+9510304+3310304+3323327(Top 82%)9778(Top 80%)9778(Top 13772%)
24M24.00 mi1.00 mi24899+4510286+1810286+1823374(Top 82%)9818(Top 80%)9818(Top 13828%)
40K24.85 mi0.85 mi24840+5910268+1810268+1823154(Top 82%)9784(Top 80%)9784(Top 13780%)
25.2M25.20 mi0.35 mi24820+2010262+610262+623344(Top 82%)9841(Top 80%)9841(Top 13861%)
Finish26.22 mi1.02 mi24852-3210290-2810290-2825170(Top 89%)10731(Top 88%)10731(Top 15114%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 92%
×21story building
+97ft-345ft

Overall

26072

Females

10828

F70-74

10828

5K→10K

3.1 - 6.2 mi

Top 92%
×5story building
+79ft-138ft

Overall

26166

Females

10887

F70-74

10887

10K→15K

6.2 - 9.3 mi

Top 92%
×3story building
+67ft-78ft

Overall

26072

Females

10828

F70-74

10828

15K→20K

9.3 - 12.4 mi

Top 88%
×5story building
+106ft-86ft

Overall

25069

Females

10302

F70-74

10302

20K→Half

12.4 - 13.1 mi

Top 88%
×2story building
+19ft-37ft

Overall

25035

Females

10282

F70-74

10282

Half→25K

13.1 - 15.5 mi

Top 84%
×4story building
+66ft-88ft

Overall

23987

Females

9735

F70-74

9735

25K→30K

15.5 - 18.6 mi

Top 82%
×9story building
+181ft-148ft

Overall

23214

Females

9446

F70-74

9446

30K→20M

18.6 - 20.0 mi

Top 81%
×5story building
+64ft-50ft

Overall

23042

Females

9447

F70-74

9447

20M→21M

20.0 - 21.0 mi

Top 78%
×8story building
+106ft-24ft

Overall

22254

Females

9115

F70-74

9115

21M→35K

21.0 - 21.8 mi

Top 83%
×7story building
+17ft-86ft

Overall

23588

Females

9854

F70-74

9854

35K→23M

21.8 - 23.0 mi

Top 82%
×5story building
+23ft-63ft

Overall

23327

Females

9778

F70-74

9778

23M→24M

23.0 - 24.0 mi

Top 82%
×6story building
+12ft-82ft

Overall

23374

Females

9818

F70-74

9818

24M→40K

24.0 - 24.9 mi

Top 82%
×1story
+6ft-20ft

Overall

23154

Females

9784

F70-74

9784

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

23344

Females

9841

F70-74

9841

25.2M→Finish

25.2 - 26.2 mi

Top 89%
×2story building
+22ft-21ft

Overall

25170

Females

10731

F70-74

10731

Passing Analysis

Category:
Athletes Passed
2822
Passed By
144
Net Change
+2678
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#27530
5K → 10K6734+669#27530#26861
10K → 15K29111+280#26861#26581
15K → 20K4071+406#26581#26175
20K → Half662+64#26175#26111
Half → 25K3552+353#26111#25758
25K → 30K4222+420#25758#25338
30K → 20M1485+143#25338#25195
20M → 21M1456+139#25195#25056
21M → 35K3417+17#25056#25039
35K → 23M1016+95#25039#24944
23M → 24M5813+45#24944#24899
24M → 40K7112+59#24899#24840
40K → 25.2M277+20#24840#24820
25.2M → Finish2456-32#24820#24852
TOTALS2822144+2678
📊

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