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BOSTON MARATHON 2025

Sam (michelle) Duncan-Evans

Bib: 19904•F

BC

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 39%
Masters (Masters Women)
#0 / 6759
Top 25%
Division (F40-44)
#0 / 1718
Top 48%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:22
Rank: #15212
Start → 5K
24:22 | 7:51/mi
10K· 6.21 mi
48:57
Rank: #15472 (-260)
5K → 10K
24:35 | 7:55/mi
15K· 9.32 mi
1:13:47
Rank: #15642 (-170)
10K → 15K
24:50 | 8:00/mi
20K· 12.43 mi
1:38:52
Rank: #15599 (+43)
15K → 20K
25:05 | 8:04/mi
Half· 13.11 mi
1:44:21
Rank: #15627 (-28)
20K → Half
5:29 | 8:02/mi
25K· 15.53 mi
2:04:24
Rank: #15612 (+15)
Half → 25K
20:03 | 8:16/mi
30K· 18.64 mi
2:30:56
Rank: #15488 (+124)
25K → 30K
26:32 | 8:32/mi
20M
2:42:35
Rank: #15351 (+137)
30K → 20M
11:39 | 8:34/mi
21M
2:51:33
Rank: #15168 (+183)
20M → 21M
8:58 | 8:58/mi
35K· 21.75 mi
2:57:51
Rank: #15138 (+30)
21M → 35K
6:18 | 8:25/mi
23M
3:08:39
Rank: #15042 (+96)
35K → 23M
10:48 | 8:38/mi
24M
3:17:11
Rank: #14996 (+46)
23M → 24M
8:32 | 8:32/mi
40K· 24.85 mi
3:24:36
Rank: #14974 (+22)
24M → 40K
7:25 | 8:40/mi
25.2M
3:27:49
Rank: #14935 (+39)
40K → 25.2M
3:13 | 9:20/mi
Finish· 26.22 mi
3:36:04
Rank: #14852 (+83)
25.2M → Finish
8:15 | 8:06/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:21
Pace7:58 /mi
2nd Half
Distance13.11 mi
Time1:51:43
Pace8:31 /mi
📊Positive Split: 7.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:4524:227:5124:22
7:51
-
10K
6.21 mi11:41:2048:577:5324:35
7:55
+0:04
15K
9.32 mi12:06:101:13:477:5524:50
8:00
+0:05
20K
12.43 mi12:31:151:38:527:5725:05
8:04
+0:04
Half
13.11 mi12:36:441:44:217:585:29
8:02
-0:02
25K
15.53 mi12:56:472:04:248:0020:03
8:16
+0:14
30K
18.64 mi13:23:192:30:568:0626:32
8:32
+0:16
20M
20.00 mi13:34:582:42:358:0811:39
8:34
+0:02
21M
21.00 mi13:43:562:51:338:108:58
8:58
+0:24
35K
21.75 mi13:50:142:57:518:116:18
8:25
-0:33
23M
23.00 mi14:01:023:08:398:1210:48
8:38
+0:13
24M
24.00 mi14:09:343:17:118:138:32
8:32
-0:06
40K
24.85 mi14:16:593:24:368:147:25
8:40
+0:08
25.2M
25.20 mi14:20:123:27:498:153:13
9:20
+0:40
Finish
26.22 mi14:28:273:36:048:158:15
8:06
-1:14

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

7:51 /mi

Average Pace

8:15 /mi

Slowest Pace

9:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:16:28

91% of race

Time at Steady Pace

16:23

8% of race

Time at Slower Pace

3:13

1% of race

Average Pace: 8:14 /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 mi11:16:4524:227:5124:22
7:51
#15212
10K
6.21 mi11:41:2048:577:5324:35
7:55
#15472
15K
9.32 mi12:06:101:13:477:5524:50
8:00
#15642
20K
12.43 mi12:31:151:38:527:5725:05
8:04
#15599
Half
13.11 mi12:36:441:44:217:585:29
8:02
#15627
25K
15.53 mi12:56:472:04:248:0020:03
8:16
#15612
30K
18.64 mi13:23:192:30:568:0626:32
8:32
#15488
20M
20.00 mi13:34:582:42:358:0811:39
8:34
#15351
21M
21.00 mi13:43:562:51:338:108:58
8:58
#15168
35K
21.75 mi13:50:142:57:518:116:18
8:25
#15138
23M
23.00 mi14:01:023:08:398:1210:48
8:38
#15042
24M
24.00 mi14:09:343:17:118:138:32
8:32
#14996
40K
24.85 mi14:16:593:24:368:147:25
8:40
#14974
25.2M
25.20 mi14:20:123:27:498:153:13
9:20
#14935
Finish
26.22 mi14:28:273:36:048:158:15
8:06
#14852
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi152124659465916009(Top 56%)5148(Top 42%)5148(Top 300%)
10K6.21 mi3.10 mi15472-2604818-1594818-15915760(Top 55%)4989(Top 41%)4989(Top 290%)
15K9.32 mi3.11 mi15642-1704923-1054923-10516009(Top 56%)5148(Top 42%)5148(Top 300%)
20K12.43 mi3.11 mi15599+434925-24925-215463(Top 54%)4894(Top 40%)4894(Top 285%)
Half13.11 mi0.68 mi15627-284946-214946-2116209(Top 57%)5296(Top 43%)5296(Top 308%)
25K15.53 mi2.42 mi15612+154950-44950-415730(Top 55%)5144(Top 42%)5144(Top 299%)
30K18.64 mi3.11 mi15488+1244942+84942+815012(Top 53%)4911(Top 40%)4911(Top 286%)
20M20.00 mi1.36 mi15351+1374894+484894+4814274(Top 50%)4648(Top 38%)4648(Top 271%)
21M21.00 mi1.00 mi15168+1834818+764818+7613339(Top 47%)4292(Top 35%)4292(Top 250%)
35K21.75 mi0.75 mi15138+304817+14817+115012(Top 53%)5229(Top 43%)5229(Top 304%)
23M23.00 mi1.25 mi15042+964789+284789+2814112(Top 50%)4856(Top 40%)4856(Top 283%)
24M24.00 mi1.00 mi14996+464799-104799-1014747(Top 52%)5235(Top 43%)5235(Top 305%)
40K24.85 mi0.85 mi14974+224819-204819-2014490(Top 51%)5235(Top 43%)5235(Top 305%)
25.2M25.20 mi0.35 mi14935+394812+74812+713667(Top 48%)4847(Top 40%)4847(Top 282%)
Finish26.22 mi1.02 mi14852+834789+234789+2313582(Top 48%)4740(Top 39%)4740(Top 276%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 56%
×21stories
+97ft-345ft

Overall

16009

Females

5148

F40-44

5148

5K→10K

3.1 - 6.2 mi

Top 55%
×5stories
+79ft-138ft

Overall

15760

Females

4989

F40-44

4989

10K→15K

6.2 - 9.3 mi

Top 56%
×3stories
+67ft-78ft

Overall

16009

Females

5148

F40-44

5148

15K→20K

9.3 - 12.4 mi

Top 54%
×5stories
+106ft-86ft

Overall

15463

Females

4894

F40-44

4894

20K→Half

12.4 - 13.1 mi

Top 57%
×2stories
+19ft-37ft

Overall

16209

Females

5296

F40-44

5296

Half→25K

13.1 - 15.5 mi

Top 55%
×4stories
+66ft-88ft

Overall

15730

Females

5144

F40-44

5144

25K→30K

15.5 - 18.6 mi

Top 53%
×9stories
+181ft-148ft

Overall

15012

Females

4911

F40-44

4911

30K→20M

18.6 - 20.0 mi

Top 50%
×5stories
+64ft-50ft

Overall

14274

Females

4648

F40-44

4648

20M→21M

20.0 - 21.0 mi

Top 47%
×8stories
+106ft-24ft

Overall

13339

Females

4292

F40-44

4292

21M→35K

21.0 - 21.8 mi

Top 53%
×7stories
+17ft-86ft

Overall

15012

Females

5229

F40-44

5229

35K→23M

21.8 - 23.0 mi

Top 50%
×5stories
+23ft-63ft

Overall

14112

Females

4856

F40-44

4856

23M→24M

23.0 - 24.0 mi

Top 52%
×6stories
+12ft-82ft

Overall

14747

Females

5235

F40-44

5235

24M→40K

24.0 - 24.9 mi

Top 51%
×1story
+6ft-20ft

Overall

14490

Females

5235

F40-44

5235

40K→25.2M

24.9 - 25.2 mi

Top 48%
×1story
+13ft-16ft

Overall

13667

Females

4847

F40-44

4847

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2stories
+22ft-21ft

Overall

13582

Females

4740

F40-44

4740

Passing Analysis

Category:
Athletes Passed
2051
Passed By
1691
Net Change
+360
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15212
5K → 10K204464-260#15212#15472
10K → 15K144314-170#15472#15642
15K → 20K225182+43#15642#15599
20K → Half2452-28#15599#15627
Half → 25K188173+15#15627#15612
25K → 30K298174+124#15612#15488
30K → 20M18245+137#15488#15351
20M → 21M21027+183#15351#15168
21M → 35K7343+30#15168#15138
35K → 23M14852+96#15138#15042
23M → 24M10559+46#15042#14996
24M → 40K7553+22#14996#14974
40K → 25.2M5617+39#14974#14935
25.2M → Finish11936+83#14935#14852
TOTALS20511691+360
📊

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