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BOSTON MARATHON 2025

Colleen Duncan

Bib: 14967•F

NJ

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 20%
Gender (Female)
#0 / 12228
Top 5%
Division (F18-39)
#0 / 5469
Top 9%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:20
Rank: #9372
Start → 5K
22:20 | 7:11/mi
10K· 6.21 mi
44:01
Rank: #8535 (+837)
5K → 10K
21:41 | 6:59/mi
15K· 9.32 mi
1:05:26
Rank: #7898 (+637)
10K → 15K
21:25 | 6:54/mi
20K· 12.43 mi
1:26:53
Rank: #7443 (+455)
15K → 20K
21:27 | 6:54/mi
Half· 13.11 mi
1:31:35
Rank: #7393 (+50)
20K → Half
4:42 | 6:53/mi
25K· 15.53 mi
1:48:19
Rank: #7088 (+305)
Half → 25K
16:44 | 6:54/mi
30K· 18.64 mi
2:10:11
Rank: #6559 (+529)
25K → 30K
21:52 | 7:02/mi
20M
2:19:43
Rank: #6299 (+260)
30K → 20M
9:32 | 7:01/mi
21M
2:26:56
Rank: #6072 (+227)
20M → 21M
7:13 | 7:13/mi
35K· 21.75 mi
2:32:07
Rank: #6003 (+69)
21M → 35K
5:11 | 6:56/mi
23M
2:41:03
Rank: #5826 (+177)
35K → 23M
8:56 | 7:08/mi
24M
2:48:06
Rank: #5717 (+109)
23M → 24M
7:03 | 7:03/mi
40K· 24.85 mi
2:54:19
Rank: #5651 (+66)
24M → 40K
6:13 | 7:16/mi
25.2M
2:57:02
Rank: #5604 (+47)
40K → 25.2M
2:43 | 7:53/mi
Finish· 26.22 mi
3:04:08
Rank: #5557 (+47)
25.2M → Finish
7:06 | 6:58/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:31:35
Pace6:59 /mi
2nd Half
Distance13.11 mi
Time1:32:33
Pace7:04 /mi
📊Positive Split: 1.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:4322:207:1122:20
7:11
-
10K
6.21 mi11:14:2444:017:0521:41
6:59
-0:12
15K
9.32 mi11:35:491:05:267:0121:25
6:54
-0:05
20K
12.43 mi11:57:161:26:536:5921:27
6:54
0:00
Half
13.11 mi12:01:581:31:356:594:42
6:53
-0:01
25K
15.53 mi12:18:421:48:196:5816:44
6:54
+0:01
30K
18.64 mi12:40:342:10:116:5921:52
7:02
+0:08
20M
20.00 mi12:50:062:19:436:599:32
7:01
-0:01
21M
21.00 mi12:57:192:26:567:007:13
7:13
+0:12
35K
21.75 mi13:02:302:32:077:005:11
6:56
-0:17
23M
23.00 mi13:11:262:41:037:008:56
7:08
+0:12
24M
24.00 mi13:18:292:48:067:007:03
7:03
-0:05
40K
24.85 mi13:24:422:54:197:016:13
7:16
+0:13
25.2M
25.20 mi13:27:252:57:027:022:43
7:53
+0:37
Finish
26.22 mi13:34:313:04:087:027:06
6:58
-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

6:53 /mi

Average Pace

7:02 /mi

Slowest Pace

7:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:01:25

99% of race

Time at Steady Pace

2:43

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:01 /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 mi10:52:4322:207:1122:20
7:11
#9372
10K
6.21 mi11:14:2444:017:0521:41
6:59
#8535
15K
9.32 mi11:35:491:05:267:0121:25
6:54
#7898
20K
12.43 mi11:57:161:26:536:5921:27
6:54
#7443
Half
13.11 mi12:01:581:31:356:594:42
6:53
#7393
25K
15.53 mi12:18:421:48:196:5816:44
6:54
#7088
30K
18.64 mi12:40:342:10:116:5921:52
7:02
#6559
20M
20.00 mi12:50:062:19:436:599:32
7:01
#6299
21M
21.00 mi12:57:192:26:567:007:13
7:13
#6072
35K
21.75 mi13:02:302:32:077:005:11
6:56
#6003
23M
23.00 mi13:11:262:41:037:008:56
7:08
#5826
24M
24.00 mi13:18:292:48:067:007:03
7:03
#5717
40K
24.85 mi13:24:422:54:197:016:13
7:16
#5651
25.2M
25.20 mi13:27:252:57:027:022:43
7:53
#5604
Finish
26.22 mi13:34:313:04:087:027:06
6:58
#5557
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi9372153615366918(Top 24%)709(Top 6%)709(Top 13%)
10K6.21 mi3.10 mi8535+8371197+3391197+3397804(Top 27%)938(Top 8%)938(Top 17%)
15K9.32 mi3.11 mi7898+637958+239958+2396918(Top 24%)709(Top 6%)709(Top 13%)
20K12.43 mi3.11 mi7443+455833+125833+1256241(Top 22%)606(Top 5%)606(Top 11%)
Half13.11 mi0.68 mi7393+50821+12821+126871(Top 24%)729(Top 6%)729(Top 13%)
25K15.53 mi2.42 mi7088+305748+73748+735701(Top 20%)528(Top 4%)528(Top 10%)
30K18.64 mi3.11 mi6559+529661+87661+874947(Top 17%)442(Top 4%)442(Top 8%)
20M20.00 mi1.36 mi6299+260625+36625+364228(Top 15%)361(Top 3%)361(Top 7%)
21M21.00 mi1.00 mi6072+227598+27598+273239(Top 11%)249(Top 2%)249(Top 5%)
35K21.75 mi0.75 mi6003+69594+4594+44963(Top 17%)594(Top 5%)594(Top 11%)
23M23.00 mi1.25 mi5826+177568+26568+264538(Top 16%)544(Top 4%)544(Top 10%)
24M24.00 mi1.00 mi5717+109558+10558+104943(Top 17%)708(Top 6%)708(Top 13%)
40K24.85 mi0.85 mi5651+66555+3555+35506(Top 19%)932(Top 8%)932(Top 17%)
25.2M25.20 mi0.35 mi5604+47556-1556-15347(Top 19%)977(Top 8%)977(Top 18%)
Finish26.22 mi1.02 mi5557+475565565532(Top 19%)1061(Top 9%)1061(Top 19%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 24%
×21stories
+97ft-345ft

Overall

6918

Females

709

F18-39

709

5K→10K

3.1 - 6.2 mi

Top 27%
×5stories
+79ft-138ft

Overall

7804

Females

938

F18-39

938

10K→15K

6.2 - 9.3 mi

Top 24%
×3stories
+67ft-78ft

Overall

6918

Females

709

F18-39

709

15K→20K

9.3 - 12.4 mi

Top 22%
×5stories
+106ft-86ft

Overall

6241

Females

606

F18-39

606

20K→Half

12.4 - 13.1 mi

Top 24%
×2stories
+19ft-37ft

Overall

6871

Females

729

F18-39

729

Half→25K

13.1 - 15.5 mi

Top 20%
×4stories
+66ft-88ft

Overall

5701

Females

528

F18-39

528

25K→30K

15.5 - 18.6 mi

Top 17%
×9stories
+181ft-148ft

Overall

4947

Females

442

F18-39

442

30K→20M

18.6 - 20.0 mi

Top 15%
×5stories
+64ft-50ft

Overall

4228

Females

361

F18-39

361

20M→21M

20.0 - 21.0 mi

Top 11%
×8stories
+106ft-24ft

Overall

3239

Females

249

F18-39

249

21M→35K

21.0 - 21.8 mi

Top 17%
×7stories
+17ft-86ft

Overall

4963

Females

594

F18-39

594

35K→23M

21.8 - 23.0 mi

Top 16%
×5stories
+23ft-63ft

Overall

4538

Females

544

F18-39

544

23M→24M

23.0 - 24.0 mi

Top 17%
×6stories
+12ft-82ft

Overall

4943

Females

708

F18-39

708

24M→40K

24.0 - 24.9 mi

Top 19%
×1story
+6ft-20ft

Overall

5506

Females

932

F18-39

932

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5347

Females

977

F18-39

977

25.2M→Finish

25.2 - 26.2 mi

Top 19%
×2stories
+22ft-21ft

Overall

5532

Females

1061

F18-39

1061

Passing Analysis

Category:
Athletes Passed
3949
Passed By
134
Net Change
+3815
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9372
5K → 10K86023+837#9372#8535
10K → 15K6414+637#8535#7898
15K → 20K4583+455#7898#7443
20K → Half577+50#7443#7393
Half → 25K3116+305#7393#7088
25K → 30K5367+529#7088#6559
30K → 20M2622+260#6559#6299
20M → 21M2292+227#6299#6072
21M → 35K7910+69#6072#6003
35K → 23M1869+177#6003#5826
23M → 24M1156+109#5826#5717
24M → 40K8620+66#5717#5651
40K → 25.2M558+47#5651#5604
25.2M → Finish7427+47#5604#5557
TOTALS3949134+3815
📊

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