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BOSTON MARATHON 2024

Sandra Swennen

Bib: 9626•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 32%
Gender (Female)
#0 / 10924
Top 17%
Masters (Masters Women)
#0 / 6263
Top 7%
Division (F50-54)
#0 / 1187
Top 3%
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
7:02/mi
21:52
↑ 97↓ 3451.5%
10K· 6.21 mi
6:57/mi
43:28
↑ 79↓ 1380.4%
15K· 9.32 mi
7:00/mi
1:05:14
↑ 67↓ 78
20K· 12.43 mi
7:05/mi
1:27:15
↑ 106↓ 860.1%
Half· 13.11 mi
7:04/mi
1:32:04
↑ 19↓ 370.5%
25K· 15.53 mi
7:13/mi
1:49:33
↑ 66↓ 880.2%
30K· 18.64 mi
8:18/mi
2:15:20
↑ 181↓ 1480.2%
20M
8:05/mi
2:26:19
↑ 64↓ 500.2%
21M
8:53/mi
2:35:12
↑ 106↓ 241.6%
35K· 21.75 mi
7:18/mi
2:40:40
↑ 17↓ 861.7%
23M
8:39/mi
2:51:30
↑ 23↓ 630.6%
24M
7:46/mi
2:59:16
↓ 821.3%
40K· 24.85 mi
8:39/mi
3:06:40
↓ 200.3%
25.2M
12:25/mi
3:10:57
↑ 13↓ 160.2%
Finish· 26.22 mi
13:55/mi
3:25:08
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:04
Pace7:01 /mi
2nd Half
Distance13.11 mi
Time1:53:04
Pace8:38 /mi
📊Positive Split: 22.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:5221:527:0221:52
7:02
-
10K
6.21 mi11:09:2843:287:0021:36
6:57
-0:05
15K
9.32 mi11:31:141:05:147:0021:46
7:00
+0:03
20K
12.43 mi11:53:151:27:157:0122:01
7:05
+0:05
Half
13.11 mi11:58:041:32:047:014:49
7:04
-0:01
25K
15.53 mi12:15:331:49:337:0317:29
7:13
+0:09
30K
18.64 mi12:41:202:15:207:1625:47
8:18
+1:05
20M
20.00 mi12:52:192:26:197:1910:59
8:05
-0:13
21M
21.00 mi13:01:122:35:127:238:53
8:53
+0:48
35K
21.75 mi13:06:402:40:407:235:28
7:18
-1:35
23M
23.00 mi13:17:302:51:307:2710:50
8:39
+1:21
24M
24.00 mi13:25:162:59:167:287:46
7:46
-0:53
40K
24.85 mi13:32:403:06:407:317:24
8:39
+0:53
25.2M
25.20 mi13:36:573:10:577:354:17
12:25
+3:46
Finish
26.22 mi13:51:083:25:087:5014:11
13:55
+1:30

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

6:57 /mi

Average Pace

7:50 /mi

Slowest Pace

13:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:57:47

87% of race

Time at Slower Pace

27:21

13% of race

Average Pace: 7:49 /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 mi10:47:5221:527:0221:52
7:02
#7285
10K
6.21 mi11:09:2843:287:0021:36
6:57
#6807
15K
9.32 mi11:31:141:05:147:0021:46
7:00
#6609
20K
12.43 mi11:53:151:27:157:0122:01
7:05
#6314
Half
13.11 mi11:58:041:32:047:014:49
7:04
#6285
25K
15.53 mi12:15:331:49:337:0317:29
7:13
#6051
30K
18.64 mi12:41:202:15:207:1625:47
8:18
#6539
20M
20.00 mi12:52:192:26:197:1910:59
8:05
#6528
21M
21.00 mi13:01:122:35:127:238:53
8:53
#6515
35K
21.75 mi13:06:402:40:407:235:28
7:18
#6350
23M
23.00 mi13:17:302:51:307:2710:50
8:39
#6427
24M
24.00 mi13:25:162:59:167:287:46
7:46
#6297
40K
24.85 mi13:32:403:06:407:317:24
8:39
#6349
25.2M
25.20 mi13:36:573:10:577:354:17
12:25
#6629
Finish
26.22 mi13:51:083:25:087:5014:11
13:55
#8216
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi72859169166269(Top 25%)680(Top 6%)680(Top 57%)
10K6.21 mi3.10 mi6807+478786+130786+1306380(Top 25%)686(Top 6%)686(Top 58%)
15K9.32 mi3.11 mi6609+198749+37749+376269(Top 25%)680(Top 6%)680(Top 57%)
20K12.43 mi3.11 mi6314+295682+67682+675725(Top 22%)598(Top 5%)598(Top 50%)
Half13.11 mi0.68 mi6285+29686-4686-46175(Top 24%)735(Top 7%)735(Top 62%)
25K15.53 mi2.42 mi6051+234646+40646+405391(Top 21%)613(Top 6%)613(Top 52%)
30K18.64 mi3.11 mi6539-488840-194840-1949566(Top 37%)2483(Top 23%)2483(Top 209%)
20M20.00 mi1.36 mi6528+11884-44884-447253(Top 28%)1652(Top 15%)1652(Top 139%)
21M21.00 mi1.00 mi6515+13917-33917-338016(Top 31%)2180(Top 20%)2180(Top 184%)
35K21.75 mi0.75 mi6350+165884+33884+334231(Top 17%)610(Top 6%)610(Top 51%)
23M23.00 mi1.25 mi6427-77958-74958-749308(Top 36%)3027(Top 28%)3027(Top 255%)
24M24.00 mi1.00 mi6297+130950+8950+85407(Top 21%)1266(Top 12%)1266(Top 107%)
40K24.85 mi0.85 mi6349-521006-561006-569160(Top 36%)3154(Top 29%)3154(Top 266%)
25.2M25.20 mi0.35 mi6629-2801130-1241130-12418342(Top 72%)7683(Top 70%)7683(Top 647%)
Finish26.22 mi1.02 mi8216-15871840-7101840-71024896(Top 97%)10740(Top 98%)10740(Top 905%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 25%
×21story building
+97ft-345ft

Overall

6269

Females

680

F50-54

680

5K→10K

3.1 - 6.2 mi

Top 25%
×5story building
+79ft-138ft

Overall

6380

Females

686

F50-54

686

10K→15K

6.2 - 9.3 mi

Top 25%
×3story building
+67ft-78ft

Overall

6269

Females

680

F50-54

680

15K→20K

9.3 - 12.4 mi

Top 22%
×5story building
+106ft-86ft

Overall

5725

Females

598

F50-54

598

20K→Half

12.4 - 13.1 mi

Top 24%
×2story building
+19ft-37ft

Overall

6175

Females

735

F50-54

735

Half→25K

13.1 - 15.5 mi

Top 21%
×4story building
+66ft-88ft

Overall

5391

Females

613

F50-54

613

25K→30K

15.5 - 18.6 mi

Top 37%
×9story building
+181ft-148ft

Overall

9566

Females

2483

F50-54

2483

30K→20M

18.6 - 20.0 mi

Top 28%
×5story building
+64ft-50ft

Overall

7253

Females

1652

F50-54

1652

20M→21M

20.0 - 21.0 mi

Top 31%
×8story building
+106ft-24ft

Overall

8016

Females

2180

F50-54

2180

21M→35K

21.0 - 21.8 mi

Top 17%
×7story building
+17ft-86ft

Overall

4231

Females

610

F50-54

610

35K→23M

21.8 - 23.0 mi

Top 36%
×5story building
+23ft-63ft

Overall

9308

Females

3027

F50-54

3027

23M→24M

23.0 - 24.0 mi

Top 21%
×6story building
+12ft-82ft

Overall

5407

Females

1266

F50-54

1266

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

9160

Females

3154

F50-54

3154

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

18342

Females

7683

F50-54

7683

25.2M→Finish

25.2 - 26.2 mi

Top 97%
×2story building
+22ft-21ft

Overall

24896

Females

10740

F50-54

10740

Passing Analysis

Category:
Athletes Passed
2228
Passed By
3159
Net Change
-931
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7285
5K → 10K50931+478#7285#6807
10K → 15K26062+198#6807#6609
15K → 20K32631+295#6609#6314
20K → Half5021+29#6314#6285
Half → 25K27137+234#6285#6051
25K → 30K91579-488#6051#6539
30K → 20M124113+11#6539#6528
20M → 21M114101+13#6528#6515
21M → 35K1683+165#6515#6350
35K → 23M87164-77#6350#6427
23M → 24M14919+130#6427#6297
24M → 40K68120-52#6297#6349
40K → 25.2M5285-280#6349#6629
25.2M → Finish61593-1587#6629#8216
TOTALS22283159-931
📊

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