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BOSTON MARATHON 2025

Emily Heaslip

Bib: 10557•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 23%
Gender (Female)
#0 / 12228
Top 6%
Division (F18-39)
#0 / 5469
Top 12%
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
7:22/mi
22:52
↑ 97↓ 3451.5%
10K· 6.21 mi
7:15/mi
45:23
↑ 79↓ 1380.4%
15K· 9.32 mi
7:09/mi
1:07:37
↑ 67↓ 78
20K· 12.43 mi
7:11/mi
1:29:57
↑ 106↓ 860.1%
Half· 13.11 mi
7:11/mi
1:34:51
↑ 19↓ 370.5%
25K· 15.53 mi
7:08/mi
1:52:08
↑ 66↓ 880.2%
30K· 18.64 mi
7:14/mi
2:14:35
↑ 181↓ 1480.2%
20M
7:11/mi
2:24:21
↑ 64↓ 500.2%
21M
7:24/mi
2:31:45
↑ 106↓ 241.6%
35K· 21.75 mi
6:57/mi
2:36:57
↑ 17↓ 861.7%
23M
7:06/mi
2:45:50
↑ 23↓ 630.6%
24M
6:51/mi
2:52:41
↓ 821.3%
40K· 24.85 mi
6:49/mi
2:58:31
↓ 200.3%
25.2M
7:24/mi
3:01:04
↑ 13↓ 160.2%
Finish· 26.22 mi
6:31/mi
3:07:42
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:34:51
Pace7:14 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:32:51
Pace7:05 /mi
📊Negative Split: 2.1% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:4822:527:2222:52
7:22
-
10K
6.21 mi11:11:1945:237:1822:31
7:15
-0:07
15K
9.32 mi11:33:331:07:377:1522:14
7:09
-0:06
20K
12.43 mi11:55:531:29:577:1422:20
7:11
+0:02
Half
13.11 mi12:00:471:34:517:144:54
7:11
0:00
25K
15.53 mi12:18:041:52:087:1317:17
7:08
-0:03
30K
18.64 mi12:40:312:14:357:1322:27
7:14
+0:06
20M
20.00 mi12:50:172:24:217:139:46
7:11
-0:03
21M
21.00 mi12:57:412:31:457:147:24
7:24
+0:13
35K
21.75 mi13:02:532:36:577:135:12
6:57
-0:27
23M
23.00 mi13:11:462:45:507:138:53
7:06
+0:09
24M
24.00 mi13:18:372:52:417:126:51
6:51
-0:15
40K
24.85 mi13:24:272:58:317:115:50
6:49
-0:02
25.2M
25.20 mi13:27:003:01:047:112:33
7:24
+0:35
Finish
26.22 mi13:33:383:07:427:106:38
6:31
-0:53

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

6:31 /mi

Average Pace

7:10 /mi

Slowest Pace

7:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:12:55

39% of race

Time at Steady Pace

1:54:47

61% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:10 /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 mi10:48:4822:527:2222:52
7:22
#10947
10K
6.21 mi11:11:1945:237:1822:31
7:15
#10370
15K
9.32 mi11:33:331:07:377:1522:14
7:09
#9797
20K
12.43 mi11:55:531:29:577:1422:20
7:11
#9323
Half
13.11 mi12:00:471:34:517:144:54
7:11
#9304
25K
15.53 mi12:18:041:52:087:1317:17
7:08
#8848
30K
18.64 mi12:40:312:14:357:1322:27
7:14
#8179
20M
20.00 mi12:50:172:24:217:139:46
7:11
#7881
21M
21.00 mi12:57:412:31:457:147:24
7:24
#7566
35K
21.75 mi13:02:532:36:577:135:12
6:57
#7429
23M
23.00 mi13:11:462:45:507:138:53
7:06
#7169
24M
24.00 mi13:18:372:52:417:126:51
6:51
#6974
40K
24.85 mi13:24:272:58:317:115:50
6:49
#6743
25.2M
25.20 mi13:27:003:01:047:112:33
7:24
#6640
Finish
26.22 mi13:33:383:07:427:106:38
6:31
#6399
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi10947225022508755(Top 31%)1321(Top 11%)1321(Top 24%)
10K6.21 mi3.10 mi10370+5771986+2641986+2649908(Top 35%)1787(Top 15%)1787(Top 33%)
15K9.32 mi3.11 mi9797+5731741+2451741+2458755(Top 31%)1321(Top 11%)1321(Top 24%)
20K12.43 mi3.11 mi9323+4741556+1851556+1858110(Top 29%)1145(Top 9%)1145(Top 21%)
Half13.11 mi0.68 mi9304+191551+51551+58954(Top 32%)1455(Top 12%)1455(Top 27%)
25K15.53 mi2.42 mi8848+4561384+1671384+1677163(Top 25%)907(Top 7%)907(Top 17%)
30K18.64 mi3.11 mi8179+6691179+2051179+2056049(Top 21%)690(Top 6%)690(Top 13%)
20M20.00 mi1.36 mi7881+2981099+801099+805163(Top 18%)555(Top 5%)555(Top 10%)
21M21.00 mi1.00 mi7566+3151019+801019+804148(Top 15%)407(Top 3%)407(Top 7%)
35K21.75 mi0.75 mi7429+137994+25994+255101(Top 18%)633(Top 5%)633(Top 12%)
23M23.00 mi1.25 mi7169+260946+48946+484335(Top 15%)491(Top 4%)491(Top 9%)
24M24.00 mi1.00 mi6974+195912+34912+343852(Top 14%)435(Top 4%)435(Top 8%)
40K24.85 mi0.85 mi6743+231862+50862+502996(Top 11%)290(Top 2%)290(Top 5%)
25.2M25.20 mi0.35 mi6640+103843+19843+193032(Top 11%)335(Top 3%)335(Top 6%)
Finish26.22 mi1.02 mi6399+241792+51792+512906(Top 10%)304(Top 2%)304(Top 6%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 31%
×21story building
+97ft-345ft

Overall

8755

Females

1321

F18-39

1321

5K→10K

3.1 - 6.2 mi

Top 35%
×5story building
+79ft-138ft

Overall

9908

Females

1787

F18-39

1787

10K→15K

6.2 - 9.3 mi

Top 31%
×3story building
+67ft-78ft

Overall

8755

Females

1321

F18-39

1321

15K→20K

9.3 - 12.4 mi

Top 29%
×5story building
+106ft-86ft

Overall

8110

Females

1145

F18-39

1145

20K→Half

12.4 - 13.1 mi

Top 32%
×2story building
+19ft-37ft

Overall

8954

Females

1455

F18-39

1455

Half→25K

13.1 - 15.5 mi

Top 25%
×4story building
+66ft-88ft

Overall

7163

Females

907

F18-39

907

25K→30K

15.5 - 18.6 mi

Top 21%
×9story building
+181ft-148ft

Overall

6049

Females

690

F18-39

690

30K→20M

18.6 - 20.0 mi

Top 18%
×5story building
+64ft-50ft

Overall

5163

Females

555

F18-39

555

20M→21M

20.0 - 21.0 mi

Top 15%
×8story building
+106ft-24ft

Overall

4148

Females

407

F18-39

407

21M→35K

21.0 - 21.8 mi

Top 18%
×7story building
+17ft-86ft

Overall

5101

Females

633

F18-39

633

35K→23M

21.8 - 23.0 mi

Top 15%
×5story building
+23ft-63ft

Overall

4335

Females

491

F18-39

491

23M→24M

23.0 - 24.0 mi

Top 14%
×6story building
+12ft-82ft

Overall

3852

Females

435

F18-39

435

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

2996

Females

290

F18-39

290

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

3032

Females

335

F18-39

335

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2story building
+22ft-21ft

Overall

2906

Females

304

F18-39

304

Passing Analysis

Category:
Athletes Passed
4676*
Passed By
128
Net Change
+4548
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10947
5K → 10K64164+577#10947#10370
10K → 15K587*14+573#10370#9797
15K → 20K48814+474#9797#9323
20K → Half3213+19#9323#9304
Half → 25K4626+456#9304#8848
25K → 30K6701+669#8848#8179
30K → 20M3002+298#8179#7881
20M → 21M3161+315#7881#7566
21M → 35K1414+137#7566#7429
35K → 23M2633+260#7429#7169
23M → 24M1950+195#7169#6974
24M → 40K2332+231#6974#6743
40K → 25.2M1030+103#6743#6640
25.2M → Finish2454+241#6640#6399
TOTALS4676*128+4548

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

📊

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