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BOSTON MARATHON 2024

Erica Swanson Dufour

Bib: 19140•F

OR

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Top 41%
Masters (Masters Women)
#0 / 6263
Top 29%
Division (F45-49)
#0 / 1753
Top 37%
Race Day Weather
55°/45°F
scattered 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
8:04/mi
25:05
↑ 97↓ 3451.5%
10K· 6.21 mi
7:56/mi
49:44
↑ 79↓ 1380.4%
15K· 9.32 mi
8:03/mi
1:14:46
↑ 67↓ 78
20K· 12.43 mi
8:17/mi
1:40:31
↑ 106↓ 860.1%
Half· 13.11 mi
8:05/mi
1:46:02
↑ 19↓ 370.5%
25K· 15.53 mi
8:24/mi
2:06:23
↑ 66↓ 880.2%
30K· 18.64 mi
9:06/mi
2:34:38
↑ 181↓ 1480.2%
20M
9:18/mi
2:47:16
↑ 64↓ 500.2%
21M
10:11/mi
2:57:27
↑ 106↓ 241.6%
35K· 21.75 mi
9:09/mi
3:04:18
↑ 17↓ 861.7%
23M
9:26/mi
3:16:07
↑ 23↓ 630.6%
24M
9:27/mi
3:25:34
↓ 821.3%
40K· 24.85 mi
9:27/mi
3:33:39
↓ 200.3%
25.2M
10:23/mi
3:37:14
↑ 13↓ 160.2%
Finish· 26.22 mi
8:35/mi
3:45:59
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:02
Pace8:05 /mi
2nd Half
Distance13.11 mi
Time1:59:57
Pace9:09 /mi
📊Positive Split: 13.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:3725:058:0425:05
8:04
-
10K
6.21 mi11:42:1649:448:0024:39
7:56
-0:08
15K
9.32 mi12:07:181:14:468:0125:02
8:03
+0:07
20K
12.43 mi12:33:031:40:318:0525:45
8:17
+0:14
Half
13.11 mi12:38:341:46:028:055:31
8:05
-0:12
25K
15.53 mi12:58:552:06:238:0820:21
8:24
+0:19
30K
18.64 mi13:27:102:34:388:1828:15
9:06
+0:42
20M
20.00 mi13:39:482:47:168:2212:38
9:18
+0:12
21M
21.00 mi13:49:592:57:278:2710:11
10:11
+0:53
35K
21.75 mi13:56:503:04:188:286:51
9:09
-1:02
23M
23.00 mi14:08:393:16:078:3211:49
9:26
+0:17
24M
24.00 mi14:18:063:25:348:349:27
9:27
+0:01
40K
24.85 mi14:26:113:33:398:368:05
9:27
0:00
25.2M
25.20 mi14:29:463:37:148:373:35
10:23
+0:56
Finish
26.22 mi14:38:313:45:598:388:45
8:35
-1:48

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

7:56 /mi

Average Pace

8:38 /mi

Slowest Pace

10:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:15:08

60% of race

Time at Steady Pace

1:17:05

34% of race

Time at Slower Pace

13:46

6% of race

Average Pace: 8:37 /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 mi11:17:3725:058:0425:05
8:04
#15200
10K
6.21 mi11:42:1649:448:0024:39
7:56
#14439
15K
9.32 mi12:07:181:14:468:0125:02
8:03
#14208
20K
12.43 mi12:33:031:40:318:0525:45
8:17
#13994
Half
13.11 mi12:38:341:46:028:055:31
8:05
#13942
25K
15.53 mi12:58:552:06:238:0820:21
8:24
#13654
30K
18.64 mi13:27:102:34:388:1828:15
9:06
#13587
20M
20.00 mi13:39:482:47:168:2212:38
9:18
#13545
21M
21.00 mi13:49:592:57:278:2710:11
10:11
#13541
35K
21.75 mi13:56:503:04:188:286:51
9:09
#13543
23M
23.00 mi14:08:393:16:078:3211:49
9:26
#13526
24M
24.00 mi14:18:063:25:348:349:27
9:27
#13530
40K
24.85 mi14:26:113:33:398:368:05
9:27
#13496
25.2M
25.20 mi14:29:463:37:148:373:35
10:23
#13449
Finish
26.22 mi14:38:313:45:598:388:45
8:35
#13366
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi152005059505913847(Top 54%)4273(Top 39%)4273(Top 244%)
10K6.21 mi3.10 mi14439+7614599+4604599+46013720(Top 54%)4178(Top 38%)4178(Top 238%)
15K9.32 mi3.11 mi14208+2314463+1364463+13613847(Top 54%)4273(Top 39%)4273(Top 244%)
20K12.43 mi3.11 mi13994+2144359+1044359+10413646(Top 53%)4216(Top 39%)4216(Top 241%)
Half13.11 mi0.68 mi13942+524330+294330+2913360(Top 52%)4124(Top 38%)4124(Top 235%)
25K15.53 mi2.42 mi13654+2884187+1434187+14312492(Top 49%)3776(Top 35%)3776(Top 215%)
30K18.64 mi3.11 mi13587+674244-574244-5713678(Top 54%)4658(Top 43%)4658(Top 266%)
20M20.00 mi1.36 mi13545+424290-464290-4613613(Top 53%)4915(Top 45%)4915(Top 280%)
21M21.00 mi1.00 mi13541+44345-554345-5513683(Top 54%)5137(Top 47%)5137(Top 293%)
35K21.75 mi0.75 mi13543-24380-354380-3514081(Top 55%)5362(Top 49%)5362(Top 306%)
23M23.00 mi1.25 mi13526+174430-504430-5013246(Top 52%)5026(Top 46%)5026(Top 287%)
24M24.00 mi1.00 mi13530-44479-494479-4914276(Top 56%)5570(Top 51%)5570(Top 318%)
40K24.85 mi0.85 mi13496+344494-154494-1512941(Top 51%)5011(Top 46%)5011(Top 286%)
25.2M25.20 mi0.35 mi13449+474479+154479+1512465(Top 49%)4830(Top 44%)4830(Top 276%)
Finish26.22 mi1.02 mi13366+834475+44475+412001(Top 47%)4462(Top 41%)4462(Top 255%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

13847

Females

4273

F45-49

4273

5K→10K

3.1 - 6.2 mi

Top 54%
×5story building
+79ft-138ft

Overall

13720

Females

4178

F45-49

4178

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

13847

Females

4273

F45-49

4273

15K→20K

9.3 - 12.4 mi

Top 53%
×5story building
+106ft-86ft

Overall

13646

Females

4216

F45-49

4216

20K→Half

12.4 - 13.1 mi

Top 52%
×2story building
+19ft-37ft

Overall

13360

Females

4124

F45-49

4124

Half→25K

13.1 - 15.5 mi

Top 49%
×4story building
+66ft-88ft

Overall

12492

Females

3776

F45-49

3776

25K→30K

15.5 - 18.6 mi

Top 54%
×9story building
+181ft-148ft

Overall

13678

Females

4658

F45-49

4658

30K→20M

18.6 - 20.0 mi

Top 53%
×5story building
+64ft-50ft

Overall

13613

Females

4915

F45-49

4915

20M→21M

20.0 - 21.0 mi

Top 54%
×8story building
+106ft-24ft

Overall

13683

Females

5137

F45-49

5137

21M→35K

21.0 - 21.8 mi

Top 55%
×7story building
+17ft-86ft

Overall

14081

Females

5362

F45-49

5362

35K→23M

21.8 - 23.0 mi

Top 52%
×5story building
+23ft-63ft

Overall

13246

Females

5026

F45-49

5026

23M→24M

23.0 - 24.0 mi

Top 56%
×6story building
+12ft-82ft

Overall

14276

Females

5570

F45-49

5570

24M→40K

24.0 - 24.9 mi

Top 51%
×1story
+6ft-20ft

Overall

12941

Females

5011

F45-49

5011

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

12465

Females

4830

F45-49

4830

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2story building
+22ft-21ft

Overall

12001

Females

4462

F45-49

4462

Passing Analysis

Category:
Athletes Passed
3173
Passed By
1339
Net Change
+1834
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15200
5K → 10K81352+761#15200#14439
10K → 15K355124+231#14439#14208
15K → 20K349135+214#14208#13994
20K → Half7321+52#13994#13942
Half → 25K35466+288#13942#13654
25K → 30K322255+67#13654#13587
30K → 20M160118+42#13587#13545
20M → 21M149145+4#13545#13541
21M → 35K8587-2#13541#13543
35K → 23M122105+17#13543#13526
23M → 24M97101-4#13526#13530
24M → 40K10773+34#13530#13496
40K → 25.2M6518+47#13496#13449
25.2M → Finish12239+83#13449#13366
TOTALS31731339+1834
📊

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