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BOSTON MARATHON 2025

Colleen Harris

Bib: 20160•F

CO

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 35%
Gender (Female)
#0 / 12228
Top 18%
Masters (Masters Women)
#0 / 6759
Top 7%
Division (F40-44)
#0 / 1718
Top 16%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:18
Rank: #17680
Start → 5K
25:18 | 8:09/mi
10K· 6.21 mi
49:28
Rank: #16182 (+1498)
5K → 10K
24:10 | 7:47/mi
15K· 9.32 mi
1:13:32
Rank: #15408 (+774)
10K → 15K
24:04 | 7:45/mi
20K· 12.43 mi
1:37:38
Rank: #14716 (+692)
15K → 20K
24:06 | 7:45/mi
Half· 13.11 mi
1:42:52
Rank: #14636 (+80)
20K → Half
5:14 | 7:40/mi
25K· 15.53 mi
2:01:27
Rank: #14033 (+603)
Half → 25K
18:35 | 7:40/mi
30K· 18.64 mi
2:25:08
Rank: #12952 (+1081)
25K → 30K
23:41 | 7:37/mi
20M
2:35:16
Rank: #12429 (+523)
30K → 20M
10:08 | 7:27/mi
21M
2:42:59
Rank: #11975 (+454)
20M → 21M
7:43 | 7:43/mi
35K· 21.75 mi
2:48:09
Rank: #11671 (+304)
21M → 35K
5:10 | 6:54/mi
23M
2:57:13
Rank: #11176 (+495)
35K → 23M
9:04 | 7:14/mi
24M
3:04:14
Rank: #10826 (+350)
23M → 24M
7:01 | 7:01/mi
40K· 24.85 mi
3:10:08
Rank: #10484 (+342)
24M → 40K
5:54 | 6:54/mi
25.2M
3:12:43
Rank: #10326 (+158)
40K → 25.2M
2:35 | 7:29/mi
Finish· 26.22 mi
3:19:37
Rank: #10032 (+294)
25.2M → Finish
6:54 | 6:46/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:42:52
Pace7:51 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:36:45
Pace7:23 /mi
📊Negative Split: 5.9% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:3725:188:0925:18
8:09
-
10K
6.21 mi11:41:4749:287:5824:10
7:47
-0:22
15K
9.32 mi12:05:511:13:327:5324:04
7:45
-0:02
20K
12.43 mi12:29:571:37:387:5124:06
7:45
0:00
Half
13.11 mi12:35:111:42:527:515:14
7:40
-0:05
25K
15.53 mi12:53:462:01:277:4918:35
7:40
0:00
30K
18.64 mi13:17:272:25:087:4723:41
7:37
-0:03
20M
20.00 mi13:27:352:35:167:4610:08
7:27
-0:10
21M
21.00 mi13:35:182:42:597:467:43
7:43
+0:16
35K
21.75 mi13:40:282:48:097:445:10
6:54
-0:49
23M
23.00 mi13:49:322:57:137:429:04
7:14
+0:20
24M
24.00 mi13:56:333:04:147:417:01
7:01
-0:13
40K
24.85 mi14:02:273:10:087:395:54
6:54
-0:07
25.2M
25.20 mi14:05:023:12:437:392:35
7:29
+0:35
Finish
26.22 mi14:11:563:19:377:376:54
6:46
-0:43

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

6:46 /mi

Average Pace

7:37 /mi

Slowest Pace

8:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

34:03

17% of race

Time at Steady Pace

2:20:16

70% of race

Time at Slower Pace

25:18

13% of race

Average Pace: 7:37 /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 mi11:17:3725:188:0925:18
8:09
#17680
10K
6.21 mi11:41:4749:287:5824:10
7:47
#16182
15K
9.32 mi12:05:511:13:327:5324:04
7:45
#15408
20K
12.43 mi12:29:571:37:387:5124:06
7:45
#14716
Half
13.11 mi12:35:111:42:527:515:14
7:40
#14636
25K
15.53 mi12:53:462:01:277:4918:35
7:40
#14033
30K
18.64 mi13:17:272:25:087:4723:41
7:37
#12952
20M
20.00 mi13:27:352:35:167:4610:08
7:27
#12429
21M
21.00 mi13:35:182:42:597:467:43
7:43
#11975
35K
21.75 mi13:40:282:48:097:445:10
6:54
#11671
23M
23.00 mi13:49:322:57:137:429:04
7:14
#11176
24M
24.00 mi13:56:333:04:147:417:01
7:01
#10826
40K
24.85 mi14:02:273:10:087:395:54
6:54
#10484
25.2M
25.20 mi14:05:023:12:437:392:35
7:29
#10326
Finish
26.22 mi14:11:563:19:377:376:54
6:46
#10032
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi176806136613613904(Top 49%)3950(Top 32%)3950(Top 230%)
10K6.21 mi3.10 mi16182+14985251+8855251+88514623(Top 51%)4317(Top 35%)4317(Top 251%)
15K9.32 mi3.11 mi15408+7744788+4634788+46313904(Top 49%)3950(Top 32%)3950(Top 230%)
20K12.43 mi3.11 mi14716+6924416+3724416+37212914(Top 45%)3493(Top 29%)3493(Top 203%)
Half13.11 mi0.68 mi14636+804367+494367+4913166(Top 46%)3566(Top 29%)3566(Top 208%)
25K15.53 mi2.42 mi14033+6034064+3034064+30311272(Top 40%)2721(Top 22%)2721(Top 158%)
30K18.64 mi3.11 mi12952+10813522+5423522+5428647(Top 30%)1672(Top 14%)1672(Top 97%)
20M20.00 mi1.36 mi12429+5233265+2573265+2576772(Top 24%)1071(Top 9%)1071(Top 62%)
21M21.00 mi1.00 mi11975+4543054+2113054+2115787(Top 20%)862(Top 7%)862(Top 50%)
35K21.75 mi0.75 mi11671+3042918+1362918+1364835(Top 17%)573(Top 5%)573(Top 33%)
23M23.00 mi1.25 mi11176+4952710+2082710+2085170(Top 18%)734(Top 6%)734(Top 43%)
24M24.00 mi1.00 mi10826+3502562+1482562+1484771(Top 17%)671(Top 5%)671(Top 39%)
40K24.85 mi0.85 mi10484+3422405+1572405+1573400(Top 12%)368(Top 3%)368(Top 21%)
25.2M25.20 mi0.35 mi10326+1582353+522353+523474(Top 12%)441(Top 4%)441(Top 26%)
Finish26.22 mi1.02 mi10032+2942239+1142239+1144372(Top 15%)665(Top 5%)665(Top 39%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21stories
+97ft-345ft

Overall

13904

Females

3950

F40-44

3950

5K→10K

3.1 - 6.2 mi

Top 51%
×5stories
+79ft-138ft

Overall

14623

Females

4317

F40-44

4317

10K→15K

6.2 - 9.3 mi

Top 49%
×3stories
+67ft-78ft

Overall

13904

Females

3950

F40-44

3950

15K→20K

9.3 - 12.4 mi

Top 45%
×5stories
+106ft-86ft

Overall

12914

Females

3493

F40-44

3493

20K→Half

12.4 - 13.1 mi

Top 46%
×2stories
+19ft-37ft

Overall

13166

Females

3566

F40-44

3566

Half→25K

13.1 - 15.5 mi

Top 40%
×4stories
+66ft-88ft

Overall

11272

Females

2721

F40-44

2721

25K→30K

15.5 - 18.6 mi

Top 30%
×9stories
+181ft-148ft

Overall

8647

Females

1672

F40-44

1672

30K→20M

18.6 - 20.0 mi

Top 24%
×5stories
+64ft-50ft

Overall

6772

Females

1071

F40-44

1071

20M→21M

20.0 - 21.0 mi

Top 20%
×8stories
+106ft-24ft

Overall

5787

Females

862

F40-44

862

21M→35K

21.0 - 21.8 mi

Top 17%
×7stories
+17ft-86ft

Overall

4835

Females

573

F40-44

573

35K→23M

21.8 - 23.0 mi

Top 18%
×5stories
+23ft-63ft

Overall

5170

Females

734

F40-44

734

23M→24M

23.0 - 24.0 mi

Top 17%
×6stories
+12ft-82ft

Overall

4771

Females

671

F40-44

671

24M→40K

24.0 - 24.9 mi

Top 12%
×1story
+6ft-20ft

Overall

3400

Females

368

F40-44

368

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1story
+13ft-16ft

Overall

3474

Females

441

F40-44

441

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2stories
+22ft-21ft

Overall

4372

Females

665

F40-44

665

Passing Analysis

Category:
Athletes Passed
7700*
Passed By
52
Net Change
+7648
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17680
5K → 10K152022+1498#17680#16182
10K → 15K78814+774#16182#15408
15K → 20K6942+692#15408#14716
20K → Half866+80#14716#14636
Half → 25K6052+603#14636#14033
25K → 30K10821+1081#14033#12952
30K → 20M5241+523#12952#12429
20M → 21M4562+454#12429#11975
21M → 35K3040+304#11975#11671
35K → 23M4950+495#11671#11176
23M → 24M3500+350#11176#10826
24M → 40K3420+342#10826#10484
40K → 25.2M1580+158#10484#10326
25.2M → Finish296*2+294#10326#10032
TOTALS7700*52+7648

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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