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BOSTON MARATHON 2025

Heather Dunlea

Bib: 13558•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 37%
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:58
Rank: #8403
Start → 5K
21:58 | 7:04/mi
10K· 6.21 mi
44:13
Rank: #8766 (-363)
5K → 10K
22:15 | 7:10/mi
15K· 9.32 mi
1:06:57
Rank: #9195 (-429)
10K → 15K
22:44 | 7:19/mi
20K· 12.43 mi
1:32:39
Rank: #11276 (-2081)
15K → 20K
25:42 | 8:16/mi
Half· 13.11 mi
1:37:49
Rank: #11329 (-53)
20K → Half
5:10 | 7:34/mi
25K· 15.53 mi
1:57:57
Rank: #12119 (-790)
Half → 25K
20:08 | 8:18/mi
30K· 18.64 mi
2:25:11
Rank: #12982 (-863)
25K → 30K
27:14 | 8:46/mi
20M
2:36:57
Rank: #13109 (-127)
30K → 20M
11:46 | 8:40/mi
21M
2:47:24
Rank: #13629 (-520)
20M → 21M
10:27 | 10:27/mi
35K· 21.75 mi
2:54:57
Rank: #14146 (-517)
21M → 35K
7:33 | 10:06/mi
23M
3:06:54
Rank: #14498 (-352)
35K → 23M
11:57 | 9:33/mi
24M
3:15:42
Rank: #14578 (-80)
23M → 24M
8:48 | 8:48/mi
40K· 24.85 mi
3:23:05
Rank: #14530 (+48)
24M → 40K
7:23 | 8:38/mi
25.2M
3:26:15
Rank: #14497 (+33)
40K → 25.2M
3:10 | 9:11/mi
Finish· 26.22 mi
3:34:31
Rank: #14427 (+70)
25.2M → Finish
8:16 | 8:07/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:49
Pace7:28 /mi
2nd Half
Distance13.11 mi
Time1:56:42
Pace8:54 /mi
📊Positive Split: 19.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:5821:587:0421:58
7:04
-
10K
6.21 mi11:13:1344:137:0722:15
7:10
+0:06
15K
9.32 mi11:35:571:06:577:1122:44
7:19
+0:09
20K
12.43 mi12:01:391:32:397:2725:42
8:16
+0:57
Half
13.11 mi12:06:491:37:497:285:10
7:34
-0:42
25K
15.53 mi12:26:571:57:577:3620:08
8:18
+0:44
30K
18.64 mi12:54:112:25:117:4727:14
8:46
+0:28
20M
20.00 mi13:05:572:36:577:5111:46
8:40
-0:06
21M
21.00 mi13:16:242:47:247:5810:27
10:27
+1:47
35K
21.75 mi13:23:572:54:578:037:33
10:06
-0:21
23M
23.00 mi13:35:543:06:548:0811:57
9:33
-0:33
24M
24.00 mi13:44:423:15:428:098:48
8:48
-0:45
40K
24.85 mi13:52:053:23:058:107:23
8:38
-0:10
25.2M
25.20 mi13:55:153:26:158:113:10
9:11
+0:33
Finish
26.22 mi14:03:313:34:318:118:16
8:07
-1:04

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

7:04 /mi

Average Pace

8:11 /mi

Slowest Pace

10:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:20:23

37% of race

Time at Steady Pace

1:41:01

47% of race

Time at Slower Pace

33:07

15% of race

Average Pace: 8:11 /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 mi10:50:5821:587:0421:58
7:04
#8403
10K
6.21 mi11:13:1344:137:0722:15
7:10
#8766
15K
9.32 mi11:35:571:06:577:1122:44
7:19
#9195
20K
12.43 mi12:01:391:32:397:2725:42
8:16
#11276
Half
13.11 mi12:06:491:37:497:285:10
7:34
#11329
25K
15.53 mi12:26:571:57:577:3620:08
8:18
#12119
30K
18.64 mi12:54:112:25:117:4727:14
8:46
#12982
20M
20.00 mi13:05:572:36:577:5111:46
8:40
#13109
21M
21.00 mi13:16:242:47:247:5810:27
10:27
#13629
35K
21.75 mi13:23:572:54:578:037:33
10:06
#14146
23M
23.00 mi13:35:543:06:548:0811:57
9:33
#14498
24M
24.00 mi13:44:423:15:428:098:48
8:48
#14578
40K
24.85 mi13:52:053:23:058:107:23
8:38
#14530
25.2M
25.20 mi13:55:153:26:158:113:10
9:11
#14497
Finish
26.22 mi14:03:313:34:318:118:16
8:07
#14427
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi84031138113810148(Top 36%)1956(Top 16%)1956(Top 36%)
10K6.21 mi3.10 mi8766-3631285-1471285-1479189(Top 32%)1462(Top 12%)1462(Top 27%)
15K9.32 mi3.11 mi9195-4291479-1941479-19410148(Top 36%)1956(Top 16%)1956(Top 36%)
20K12.43 mi3.11 mi11276-20812495-10162495-101616774(Top 59%)5648(Top 46%)5648(Top 103%)
Half13.11 mi0.68 mi11329-532518-232518-2312452(Top 44%)3219(Top 26%)3219(Top 59%)
25K15.53 mi2.42 mi12119-7902981-4632981-46315949(Top 56%)5281(Top 43%)5281(Top 97%)
30K18.64 mi3.11 mi12982-8633542-5613542-56116394(Top 58%)5681(Top 46%)5681(Top 104%)
20M20.00 mi1.36 mi13109-1273640-983640-9814811(Top 52%)4939(Top 40%)4939(Top 90%)
21M21.00 mi1.00 mi13629-5203967-3273967-32719845(Top 70%)7816(Top 64%)7816(Top 143%)
35K21.75 mi0.75 mi14146-5174268-3014268-30122158(Top 78%)9109(Top 74%)9109(Top 167%)
23M23.00 mi1.25 mi14498-3524488-2204488-22018886(Top 66%)7451(Top 61%)7451(Top 136%)
24M24.00 mi1.00 mi14578-804560-724560-7216325(Top 57%)6105(Top 50%)6105(Top 112%)
40K24.85 mi0.85 mi14530+484566-64566-614291(Top 50%)5120(Top 42%)5120(Top 94%)
25.2M25.20 mi0.35 mi14497+334559+74559+712889(Top 45%)4447(Top 36%)4447(Top 81%)
Finish26.22 mi1.02 mi14427+704554+54554+513698(Top 48%)4796(Top 39%)4796(Top 88%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21stories
+97ft-345ft

Overall

10148

Females

1956

F18-39

1956

5K→10K

3.1 - 6.2 mi

Top 32%
×5stories
+79ft-138ft

Overall

9189

Females

1462

F18-39

1462

10K→15K

6.2 - 9.3 mi

Top 36%
×3stories
+67ft-78ft

Overall

10148

Females

1956

F18-39

1956

15K→20K

9.3 - 12.4 mi

Top 59%
×5stories
+106ft-86ft

Overall

16774

Females

5648

F18-39

5648

20K→Half

12.4 - 13.1 mi

Top 44%
×2stories
+19ft-37ft

Overall

12452

Females

3219

F18-39

3219

Half→25K

13.1 - 15.5 mi

Top 56%
×4stories
+66ft-88ft

Overall

15949

Females

5281

F18-39

5281

25K→30K

15.5 - 18.6 mi

Top 58%
×9stories
+181ft-148ft

Overall

16394

Females

5681

F18-39

5681

30K→20M

18.6 - 20.0 mi

Top 52%
×5stories
+64ft-50ft

Overall

14811

Females

4939

F18-39

4939

20M→21M

20.0 - 21.0 mi

Top 70%
×8stories
+106ft-24ft

Overall

19845

Females

7816

F18-39

7816

21M→35K

21.0 - 21.8 mi

Top 78%
×7stories
+17ft-86ft

Overall

22158

Females

9109

F18-39

9109

35K→23M

21.8 - 23.0 mi

Top 66%
×5stories
+23ft-63ft

Overall

18886

Females

7451

F18-39

7451

23M→24M

23.0 - 24.0 mi

Top 57%
×6stories
+12ft-82ft

Overall

16325

Females

6105

F18-39

6105

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

14291

Females

5120

F18-39

5120

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

12889

Females

4447

F18-39

4447

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2stories
+22ft-21ft

Overall

13698

Females

4796

F18-39

4796

Passing Analysis

Category:
Athletes Passed
734
Passed By
6756
Net Change
-6024
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8403
5K → 10K84447-363#8403#8766
10K → 15K52481-429#8766#9195
15K → 20K112090-2081#9195#11276
20K → Half1871-53#11276#11329
Half → 25K37827-790#11329#12119
25K → 30K82945-863#12119#12982
30K → 20M88215-127#12982#13109
20M → 21M23543-520#13109#13629
21M → 35K6523-517#13629#14146
35K → 23M39391-352#14146#14498
23M → 24M44124-80#14498#14578
24M → 40K9143+48#14578#14530
40K → 25.2M5118+33#14530#14497
25.2M → Finish10838+70#14497#14427
TOTALS7346756-6024
📊

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