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BOSTON MARATHON 2025

Susannah Duke

Bib: 15781•F

UT

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
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
9:36/mi
29:49
↑ 97↓ 3451.5%
10K· 6.21 mi
9:51/mi
1:00:25
↑ 79↓ 1380.4%
15K· 9.32 mi
10:12/mi
1:32:07
↑ 67↓ 78
20K· 12.43 mi
10:09/mi
2:03:40
↑ 106↓ 860.1%
Half· 13.11 mi
10:02/mi
2:10:31
↑ 19↓ 370.5%
25K· 15.53 mi
10:14/mi
2:35:19
↑ 66↓ 880.2%
30K· 18.64 mi
10:38/mi
3:08:22
↑ 181↓ 1480.2%
20M
11:16/mi
3:23:40
↑ 64↓ 500.2%
21M
11:02/mi
3:34:42
↑ 106↓ 241.6%
35K· 21.75 mi
9:45/mi
3:42:00
↑ 17↓ 861.7%
23M
10:24/mi
3:55:01
↑ 23↓ 630.6%
24M
10:18/mi
4:05:19
↓ 821.3%
40K· 24.85 mi
10:49/mi
4:14:34
↓ 200.3%
25.2M
12:05/mi
4:18:44
↑ 13↓ 160.2%
Finish· 26.22 mi
10:04/mi
4:29:00
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:10:31
Pace9:57 /mi
2nd Half
Distance13.11 mi
Time2:18:29
Pace10:34 /mi
📊Positive Split: 6.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:4429:499:3629:49
9:36
-
10K
6.21 mi11:51:201:00:259:4330:36
9:51
+0:15
15K
9.32 mi12:23:021:32:079:5331:42
10:12
+0:21
20K
12.43 mi12:54:352:03:409:5731:33
10:09
-0:03
Half
13.11 mi13:01:262:10:319:576:51
10:02
-0:07
25K
15.53 mi13:26:142:35:1910:0024:48
10:14
+0:12
30K
18.64 mi13:59:173:08:2210:0633:03
10:38
+0:24
20M
20.00 mi14:14:353:23:4010:1115:18
11:16
+0:38
21M
21.00 mi14:25:373:34:4210:1311:02
11:02
-0:14
35K
21.75 mi14:32:553:42:0010:127:18
9:45
-1:17
23M
23.00 mi14:45:563:55:0110:1313:01
10:24
+0:39
24M
24.00 mi14:56:144:05:1910:1310:18
10:18
-0:06
40K
24.85 mi15:05:294:14:3410:159:15
10:49
+0:31
25.2M
25.20 mi15:09:394:18:4410:164:10
12:05
+1:16
Finish
26.22 mi15:19:554:29:0010:1610:16
10:04
-2:01

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

9:36 /mi

Average Pace

10:16 /mi

Slowest Pace

12:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:07:43

25% of race

Time at Steady Pace

2:08:29

48% of race

Time at Slower Pace

1:12:48

27% of race

Average Pace: 10:16 /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 mi11:20:4429:499:3629:49
9:36
#24553
10K
6.21 mi11:51:201:00:259:4330:36
9:51
#24794
15K
9.32 mi12:23:021:32:079:5331:42
10:12
#25006
20K
12.43 mi12:54:352:03:409:5731:33
10:09
#24893
Half
13.11 mi13:01:262:10:319:576:51
10:02
#24886
25K
15.53 mi13:26:142:35:1910:0024:48
10:14
#24709
30K
18.64 mi13:59:173:08:2210:0633:03
10:38
#24461
20M
20.00 mi14:14:353:23:4010:1115:18
11:16
#24456
21M
21.00 mi14:25:373:34:4210:1311:02
11:02
#24288
35K
21.75 mi14:32:553:42:0010:127:18
9:45
#24189
23M
23.00 mi14:45:563:55:0110:1313:01
10:24
#24040
24M
24.00 mi14:56:144:05:1910:1310:18
10:18
#23974
40K
24.85 mi15:05:294:14:3410:159:15
10:49
#23934
25.2M
25.20 mi15:09:394:18:4410:164:10
12:05
#23928
Finish
26.22 mi15:19:554:29:0010:1610:16
10:04
#23920
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi245539983998325427(Top 90%)10468(Top 86%)10468(Top 191%)
10K6.21 mi3.10 mi24794-24110117-13410117-13424990(Top 88%)10232(Top 84%)10232(Top 187%)
15K9.32 mi3.11 mi25006-21210225-10810225-10825427(Top 90%)10468(Top 86%)10468(Top 191%)
20K12.43 mi3.11 mi24893+11310176+4910176+4924542(Top 86%)10012(Top 82%)10012(Top 183%)
Half13.11 mi0.68 mi24886+7101761017624910(Top 88%)10218(Top 84%)10218(Top 187%)
25K15.53 mi2.42 mi24709+17710094+8210094+8223787(Top 84%)9631(Top 79%)9631(Top 176%)
30K18.64 mi3.11 mi24461+2489981+1139981+11323255(Top 82%)9468(Top 77%)9468(Top 173%)
20M20.00 mi1.36 mi24456+59989-89989-824116(Top 85%)10011(Top 82%)10011(Top 183%)
21M21.00 mi1.00 mi24288+1689926+639926+6321517(Top 76%)8719(Top 71%)8719(Top 159%)
35K21.75 mi0.75 mi24189+999874+529874+5221239(Top 75%)8647(Top 71%)8647(Top 158%)
23M23.00 mi1.25 mi24040+1499816+589816+5821739(Top 77%)8943(Top 73%)8943(Top 164%)
24M24.00 mi1.00 mi23974+669792+249792+2422266(Top 78%)9273(Top 76%)9273(Top 170%)
40K24.85 mi0.85 mi23934+409783+99783+922733(Top 80%)9573(Top 78%)9573(Top 175%)
25.2M25.20 mi0.35 mi23928+69789-69789-623436(Top 83%)9882(Top 81%)9882(Top 181%)
Finish26.22 mi1.02 mi23920+89799-109799-1023166(Top 82%)9753(Top 80%)9753(Top 178%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21story building
+97ft-345ft

Overall

25427

Females

10468

F18-39

10468

5K→10K

3.1 - 6.2 mi

Top 88%
×5story building
+79ft-138ft

Overall

24990

Females

10232

F18-39

10232

10K→15K

6.2 - 9.3 mi

Top 90%
×3story building
+67ft-78ft

Overall

25427

Females

10468

F18-39

10468

15K→20K

9.3 - 12.4 mi

Top 86%
×5story building
+106ft-86ft

Overall

24542

Females

10012

F18-39

10012

20K→Half

12.4 - 13.1 mi

Top 88%
×2story building
+19ft-37ft

Overall

24910

Females

10218

F18-39

10218

Half→25K

13.1 - 15.5 mi

Top 84%
×4story building
+66ft-88ft

Overall

23787

Females

9631

F18-39

9631

25K→30K

15.5 - 18.6 mi

Top 82%
×9story building
+181ft-148ft

Overall

23255

Females

9468

F18-39

9468

30K→20M

18.6 - 20.0 mi

Top 85%
×5story building
+64ft-50ft

Overall

24116

Females

10011

F18-39

10011

20M→21M

20.0 - 21.0 mi

Top 76%
×8story building
+106ft-24ft

Overall

21517

Females

8719

F18-39

8719

21M→35K

21.0 - 21.8 mi

Top 75%
×7story building
+17ft-86ft

Overall

21239

Females

8647

F18-39

8647

35K→23M

21.8 - 23.0 mi

Top 77%
×5story building
+23ft-63ft

Overall

21739

Females

8943

F18-39

8943

23M→24M

23.0 - 24.0 mi

Top 78%
×6story building
+12ft-82ft

Overall

22266

Females

9273

F18-39

9273

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

22733

Females

9573

F18-39

9573

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

23436

Females

9882

F18-39

9882

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2story building
+22ft-21ft

Overall

23166

Females

9753

F18-39

9753

Passing Analysis

Category:
Athletes Passed
1601
Passed By
968
Net Change
+633
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24553
5K → 10K121362-241#24553#24794
10K → 15K62274-212#24794#25006
15K → 20K19986+113#25006#24893
20K → Half3326+7#24893#24886
Half → 25K20326+177#24886#24709
25K → 30K27527+248#24709#24461
30K → 20M6459+5#24461#24456
20M → 21M1746+168#24456#24288
21M → 35K1012+99#24288#24189
35K → 23M16011+149#24189#24040
23M → 24M7913+66#24040#23974
24M → 40K6121+40#23974#23934
40K → 25.2M2418+6#23934#23928
25.2M → Finish4537+8#23928#23920
TOTALS1601968+633
📊

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