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BOSTON MARATHON 2025

Emma Duncan

Bib: 17757•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 49%
Gender (Female)
#0 / 12228
Top 35%
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
22:23
Rank: #9516
Start → 5K
22:23 | 7:12/mi
10K· 6.21 mi
45:01
Rank: #9847 (-331)
5K → 10K
22:38 | 7:17/mi
15K· 9.32 mi
1:08:13
Rank: #10381 (-534)
10K → 15K
23:12 | 7:28/mi
20K· 12.43 mi
1:32:04
Rank: #10838 (-457)
15K → 20K
23:51 | 7:41/mi
Half· 13.11 mi
1:37:15
Rank: #10913 (-75)
20K → Half
5:11 | 7:36/mi
25K· 15.53 mi
1:57:10
Rank: #11699 (-786)
Half → 25K
19:55 | 8:13/mi
30K· 18.64 mi
2:23:30
Rank: #12259 (-560)
25K → 30K
26:20 | 8:29/mi
20M
2:37:22
Rank: #13276 (-1017)
30K → 20M
13:52 | 10:12/mi
21M
2:46:53
Rank: #13466 (-190)
20M → 21M
9:31 | 9:31/mi
35K· 21.75 mi
2:53:31
Rank: #13619 (-153)
21M → 35K
6:38 | 8:52/mi
23M
3:04:35
Rank: #13719 (-100)
35K → 23M
11:04 | 8:50/mi
24M
3:13:18
Rank: #13839 (-120)
23M → 24M
8:43 | 8:43/mi
40K· 24.85 mi
3:20:54
Rank: #13906 (-67)
24M → 40K
7:36 | 8:53/mi
25.2M
3:24:18
Rank: #13944 (-38)
40K → 25.2M
3:24 | 9:52/mi
Finish· 26.22 mi
3:32:57
Rank: #14011 (-67)
25.2M → Finish
8:39 | 8:29/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:15
Pace7:25 /mi
2nd Half
Distance13.11 mi
Time1:55:42
Pace8:50 /mi
📊Positive Split: 19.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:12:3022:237:1222:23
7:12
-
10K
6.21 mi11:35:0845:017:1522:38
7:17
+0:05
15K
9.32 mi11:58:201:08:137:1923:12
7:28
+0:11
20K
12.43 mi12:22:111:32:047:2523:51
7:41
+0:13
Half
13.11 mi12:27:221:37:157:255:11
7:36
-0:05
25K
15.53 mi12:47:171:57:107:3319:55
8:13
+0:37
30K
18.64 mi13:13:372:23:307:4226:20
8:29
+0:16
20M
20.00 mi13:27:292:37:227:5213:52
10:12
+1:43
21M
21.00 mi13:37:002:46:537:579:31
9:31
-0:41
35K
21.75 mi13:43:382:53:317:596:38
8:52
-0:39
23M
23.00 mi13:54:423:04:358:0211:04
8:50
-0:02
24M
24.00 mi14:03:253:13:188:038:43
8:43
-0:07
40K
24.85 mi14:11:013:20:548:057:36
8:53
+0:10
25.2M
25.20 mi14:14:253:24:188:063:24
9:52
+0:59
Finish
26.22 mi14:23:043:32:578:088:39
8:29
-1:23

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

7:12 /mi

Average Pace

8:08 /mi

Slowest Pace

10:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:37:15

46% of race

Time at Steady Pace

1:28:55

42% of race

Time at Slower Pace

26:47

13% of race

Average Pace: 8:07 /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 mi11:12:3022:237:1222:23
7:12
#9516
10K
6.21 mi11:35:0845:017:1522:38
7:17
#9847
15K
9.32 mi11:58:201:08:137:1923:12
7:28
#10381
20K
12.43 mi12:22:111:32:047:2523:51
7:41
#10838
Half
13.11 mi12:27:221:37:157:255:11
7:36
#10913
25K
15.53 mi12:47:171:57:107:3319:55
8:13
#11699
30K
18.64 mi13:13:372:23:307:4226:20
8:29
#12259
20M
20.00 mi13:27:292:37:227:5213:52
10:12
#13276
21M
21.00 mi13:37:002:46:537:579:31
9:31
#13466
35K
21.75 mi13:43:382:53:317:596:38
8:52
#13619
23M
23.00 mi13:54:423:04:358:0211:04
8:50
#13719
24M
24.00 mi14:03:253:13:188:038:43
8:43
#13839
40K
24.85 mi14:11:013:20:548:057:36
8:53
#13906
25.2M
25.20 mi14:14:253:24:188:063:24
9:52
#13944
Finish
26.22 mi14:23:043:32:578:088:39
8:29
#14011
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi95161597159711507(Top 41%)2642(Top 22%)2642(Top 48%)
10K6.21 mi3.10 mi9847-3311733-1361733-13610248(Top 36%)1941(Top 16%)1941(Top 35%)
15K9.32 mi3.11 mi10381-5342017-2842017-28411507(Top 41%)2642(Top 22%)2642(Top 48%)
20K12.43 mi3.11 mi10838-4572258-2412258-24112218(Top 43%)3123(Top 26%)3123(Top 57%)
Half13.11 mi0.68 mi10913-752299-412299-4112641(Top 45%)3325(Top 27%)3325(Top 61%)
25K15.53 mi2.42 mi11699-7862757-4582757-45815395(Top 54%)4948(Top 40%)4948(Top 90%)
30K18.64 mi3.11 mi12259-5603138-3813138-38114606(Top 51%)4683(Top 38%)4683(Top 86%)
20M20.00 mi1.36 mi13276-10173737-5993737-59921589(Top 76%)8675(Top 71%)8675(Top 159%)
21M21.00 mi1.00 mi13466-1903873-1363873-13616164(Top 57%)5791(Top 47%)5791(Top 106%)
35K21.75 mi0.75 mi13619-1533981-1083981-10817605(Top 62%)6680(Top 55%)6680(Top 122%)
23M23.00 mi1.25 mi13719-1004069-884069-8815329(Top 54%)5503(Top 45%)5503(Top 101%)
24M24.00 mi1.00 mi13839-1204172-1034172-10315841(Top 56%)5831(Top 48%)5831(Top 107%)
40K24.85 mi0.85 mi13906-674244-724244-7215706(Top 55%)5890(Top 48%)5890(Top 108%)
25.2M25.20 mi0.35 mi13944-384258-144258-1416399(Top 58%)6260(Top 51%)6260(Top 114%)
Finish26.22 mi1.02 mi14011-674324-664324-6616156(Top 57%)6100(Top 50%)6100(Top 112%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21stories
+97ft-345ft

Overall

11507

Females

2642

F18-39

2642

5K→10K

3.1 - 6.2 mi

Top 36%
×5stories
+79ft-138ft

Overall

10248

Females

1941

F18-39

1941

10K→15K

6.2 - 9.3 mi

Top 41%
×3stories
+67ft-78ft

Overall

11507

Females

2642

F18-39

2642

15K→20K

9.3 - 12.4 mi

Top 43%
×5stories
+106ft-86ft

Overall

12218

Females

3123

F18-39

3123

20K→Half

12.4 - 13.1 mi

Top 45%
×2stories
+19ft-37ft

Overall

12641

Females

3325

F18-39

3325

Half→25K

13.1 - 15.5 mi

Top 54%
×4stories
+66ft-88ft

Overall

15395

Females

4948

F18-39

4948

25K→30K

15.5 - 18.6 mi

Top 51%
×9stories
+181ft-148ft

Overall

14606

Females

4683

F18-39

4683

30K→20M

18.6 - 20.0 mi

Top 76%
×5stories
+64ft-50ft

Overall

21589

Females

8675

F18-39

8675

20M→21M

20.0 - 21.0 mi

Top 57%
×8stories
+106ft-24ft

Overall

16164

Females

5791

F18-39

5791

21M→35K

21.0 - 21.8 mi

Top 62%
×7stories
+17ft-86ft

Overall

17605

Females

6680

F18-39

6680

35K→23M

21.8 - 23.0 mi

Top 54%
×5stories
+23ft-63ft

Overall

15329

Females

5503

F18-39

5503

23M→24M

23.0 - 24.0 mi

Top 56%
×6stories
+12ft-82ft

Overall

15841

Females

5831

F18-39

5831

24M→40K

24.0 - 24.9 mi

Top 55%
×1story
+6ft-20ft

Overall

15706

Females

5890

F18-39

5890

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

16399

Females

6260

F18-39

6260

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2stories
+22ft-21ft

Overall

16156

Females

6100

F18-39

6100

Passing Analysis

Category:
Athletes Passed
799
Passed By
5290
Net Change
-4495
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9516
5K → 10K121451-331#9516#9847
10K → 15K60592-534#9847#10381
15K → 20K69525-457#10381#10838
20K → Half1792-75#10838#10913
Half → 25K40826-786#10913#11699
25K → 30K113673-560#11699#12259
30K → 20M201037-1017#12259#13276
20M → 21M58248-190#13276#13466
21M → 35K19172-153#13466#13619
35K → 23M90190-100#13619#13719
23M → 24M56176-120#13719#13839
24M → 40K62129-67#13839#13906
40K → 25.2M2159-38#13906#13944
25.2M → Finish53120-67#13944#14011
TOTALS7995290-4495
📊

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