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BOSTON MARATHON 2025

Rachel Iacofano

Bib: 17401•F

MO

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 44%
Gender (Female)
#0 / 12228
Top 29%
Division (F18-39)
#0 / 5469
Top 47%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:04
Rank: #14356
Start → 5K
24:04 | 7:45/mi
10K· 6.21 mi
47:38
Rank: #13645 (+711)
5K → 10K
23:34 | 7:35/mi
15K· 9.32 mi
1:11:17
Rank: #13308 (+337)
10K → 15K
23:39 | 7:37/mi
20K· 12.43 mi
1:35:22
Rank: #13146 (+162)
15K → 20K
24:05 | 7:45/mi
Half· 13.11 mi
1:40:36
Rank: #13142 (+4)
20K → Half
5:14 | 7:40/mi
25K· 15.53 mi
1:59:24
Rank: #12921 (+221)
Half → 25K
18:48 | 7:45/mi
30K· 18.64 mi
2:24:14
Rank: #12575 (+346)
25K → 30K
24:50 | 8:00/mi
20M
2:35:06
Rank: #12375 (+200)
30K → 20M
10:52 | 8:00/mi
21M
2:43:47
Rank: #12304 (+71)
20M → 21M
8:41 | 8:41/mi
35K· 21.75 mi
2:49:51
Rank: #12303 (+1)
21M → 35K
6:04 | 8:07/mi
23M
3:00:49
Rank: #12457 (-154)
35K → 23M
10:58 | 8:46/mi
24M
3:09:28
Rank: #12594 (-137)
23M → 24M
8:39 | 8:39/mi
40K· 24.85 mi
3:16:41
Rank: #12605 (-11)
24M → 40K
7:13 | 8:26/mi
25.2M
3:19:42
Rank: #12545 (+60)
40K → 25.2M
3:01 | 8:45/mi
Finish· 26.22 mi
3:27:41
Rank: #12494 (+51)
25.2M → Finish
7:59 | 7:50/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:36
Pace7:40 /mi
2nd Half
Distance13.11 mi
Time1:47:05
Pace8:10 /mi
📊Positive Split: 6.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:1524:047:4524:04
7:45
-
10K
6.21 mi11:39:4947:387:4023:34
7:35
-0:10
15K
9.32 mi12:03:281:11:177:3923:39
7:37
+0:02
20K
12.43 mi12:27:331:35:227:4024:05
7:45
+0:08
Half
13.11 mi12:32:471:40:367:405:14
7:40
-0:05
25K
15.53 mi12:51:351:59:247:4118:48
7:45
+0:05
30K
18.64 mi13:16:252:24:147:4424:50
8:00
+0:15
20M
20.00 mi13:27:172:35:067:4510:52
8:00
0:00
21M
21.00 mi13:35:582:43:477:488:41
8:41
+0:41
35K
21.75 mi13:42:022:49:517:496:04
8:07
-0:34
23M
23.00 mi13:53:003:00:497:5210:58
8:46
+0:39
24M
24.00 mi14:01:393:09:287:548:39
8:39
-0:07
40K
24.85 mi14:08:523:16:417:557:13
8:26
-0:13
25.2M
25.20 mi14:11:533:19:427:553:01
8:45
+0:19
Finish
26.22 mi14:19:523:27:417:567:59
7:50
-0:55

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

7:35 /mi

Average Pace

7:56 /mi

Slowest Pace

8:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:49:09

81% of race

Time at Steady Pace

38:32

19% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:55 /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 mi11:16:1524:047:4524:04
7:45
#14356
10K
6.21 mi11:39:4947:387:4023:34
7:35
#13645
15K
9.32 mi12:03:281:11:177:3923:39
7:37
#13308
20K
12.43 mi12:27:331:35:227:4024:05
7:45
#13146
Half
13.11 mi12:32:471:40:367:405:14
7:40
#13142
25K
15.53 mi12:51:351:59:247:4118:48
7:45
#12921
30K
18.64 mi13:16:252:24:147:4424:50
8:00
#12575
20M
20.00 mi13:27:172:35:067:4510:52
8:00
#12375
21M
21.00 mi13:35:582:43:477:488:41
8:41
#12304
35K
21.75 mi13:42:022:49:517:496:04
8:07
#12303
23M
23.00 mi13:53:003:00:497:5210:58
8:46
#12457
24M
24.00 mi14:01:393:09:287:548:39
8:39
#12594
40K
24.85 mi14:08:523:16:417:557:13
8:26
#12605
25.2M
25.20 mi14:11:533:19:427:553:01
8:45
#12545
Finish
26.22 mi14:19:523:27:417:567:59
7:50
#12494
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi143564131413112720(Top 45%)3292(Top 27%)3292(Top 60%)
10K6.21 mi3.10 mi13645+7113731+4003731+40012899(Top 45%)3315(Top 27%)3315(Top 61%)
15K9.32 mi3.11 mi13308+3373578+1533578+15312720(Top 45%)3292(Top 27%)3292(Top 60%)
20K12.43 mi3.11 mi13146+1623525+533525+5312874(Top 45%)3480(Top 28%)3480(Top 64%)
Half13.11 mi0.68 mi13142+43524+13524+113213(Top 47%)3613(Top 30%)3613(Top 66%)
25K15.53 mi2.42 mi12921+2213431+933431+9311997(Top 42%)3119(Top 26%)3119(Top 57%)
30K18.64 mi3.11 mi12575+3463312+1193312+11911342(Top 40%)2953(Top 24%)2953(Top 54%)
20M20.00 mi1.36 mi12375+2003239+733239+7310459(Top 37%)2673(Top 22%)2673(Top 49%)
21M21.00 mi1.00 mi12304+713236+33236+311599(Top 41%)3397(Top 28%)3397(Top 62%)
35K21.75 mi0.75 mi12303+13263-273263-2713013(Top 46%)4161(Top 34%)4161(Top 76%)
23M23.00 mi1.25 mi12457-1543382-1193382-11914883(Top 52%)5263(Top 43%)5263(Top 96%)
24M24.00 mi1.00 mi12594-1373472-903472-9015452(Top 54%)5614(Top 46%)5614(Top 103%)
40K24.85 mi0.85 mi12605-113508-363508-3613056(Top 46%)4467(Top 37%)4467(Top 82%)
25.2M25.20 mi0.35 mi12545+603497+113497+1110378(Top 37%)3214(Top 26%)3214(Top 59%)
Finish26.22 mi1.02 mi12494+513501-43501-411704(Top 41%)3795(Top 31%)3795(Top 69%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 45%
×21stories
+97ft-345ft

Overall

12720

Females

3292

F18-39

3292

5K→10K

3.1 - 6.2 mi

Top 45%
×5stories
+79ft-138ft

Overall

12899

Females

3315

F18-39

3315

10K→15K

6.2 - 9.3 mi

Top 45%
×3stories
+67ft-78ft

Overall

12720

Females

3292

F18-39

3292

15K→20K

9.3 - 12.4 mi

Top 45%
×5stories
+106ft-86ft

Overall

12874

Females

3480

F18-39

3480

20K→Half

12.4 - 13.1 mi

Top 47%
×2stories
+19ft-37ft

Overall

13213

Females

3613

F18-39

3613

Half→25K

13.1 - 15.5 mi

Top 42%
×4stories
+66ft-88ft

Overall

11997

Females

3119

F18-39

3119

25K→30K

15.5 - 18.6 mi

Top 40%
×9stories
+181ft-148ft

Overall

11342

Females

2953

F18-39

2953

30K→20M

18.6 - 20.0 mi

Top 37%
×5stories
+64ft-50ft

Overall

10459

Females

2673

F18-39

2673

20M→21M

20.0 - 21.0 mi

Top 41%
×8stories
+106ft-24ft

Overall

11599

Females

3397

F18-39

3397

21M→35K

21.0 - 21.8 mi

Top 46%
×7stories
+17ft-86ft

Overall

13013

Females

4161

F18-39

4161

35K→23M

21.8 - 23.0 mi

Top 52%
×5stories
+23ft-63ft

Overall

14883

Females

5263

F18-39

5263

23M→24M

23.0 - 24.0 mi

Top 54%
×6stories
+12ft-82ft

Overall

15452

Females

5614

F18-39

5614

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

13056

Females

4467

F18-39

4467

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

10378

Females

3214

F18-39

3214

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2stories
+22ft-21ft

Overall

11704

Females

3795

F18-39

3795

Passing Analysis

Category:
Athletes Passed
2951
Passed By
1089
Net Change
+1862
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14356
5K → 10K77160+711#14356#13645
10K → 15K39154+337#13645#13308
15K → 20K283121+162#13308#13146
20K → Half3329+4#13146#13142
Half → 25K28059+221#13142#12921
25K → 30K42175+346#12921#12575
30K → 20M22121+200#12575#12375
20M → 21M13463+71#12375#12304
21M → 35K6160+1#12304#12303
35K → 23M72226-154#12303#12457
23M → 24M44181-137#12457#12594
24M → 40K7586-11#12594#12605
40K → 25.2M7111+60#12605#12545
25.2M → Finish9443+51#12545#12494
TOTALS29511089+1862
📊

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