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BOSTON MARATHON 2024

Samantha Sarafin

Bib: 11104•F

MA

0:00
0:00
/ mi
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Overall
#0 / 25550
Top 42%
Gender (Female)
#0 / 10924
Top 28%
Division (F18-39)
#0 / 4660
Top 44%
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
7:00/mi
21:46
↑ 97↓ 3451.5%
10K· 6.21 mi
7:03/mi
43:41
↑ 79↓ 1380.4%
15K· 9.32 mi
7:17/mi
1:06:19
↑ 67↓ 78
20K· 12.43 mi
7:40/mi
1:30:08
↑ 106↓ 860.1%
Half· 13.11 mi
7:45/mi
1:35:25
↑ 19↓ 370.5%
25K· 15.53 mi
8:05/mi
1:55:00
↑ 66↓ 880.2%
30K· 18.64 mi
9:45/mi
2:25:16
↑ 181↓ 1480.2%
20M
8:37/mi
2:36:59
↑ 64↓ 500.2%
21M
10:09/mi
2:47:08
↑ 106↓ 241.6%
35K· 21.75 mi
8:27/mi
2:53:27
↑ 17↓ 861.7%
23M
10:09/mi
3:06:09
↑ 23↓ 630.6%
24M
8:57/mi
3:15:06
↓ 821.3%
40K· 24.85 mi
9:34/mi
3:23:17
↓ 200.3%
25.2M
9:37/mi
3:26:36
↑ 13↓ 160.2%
Finish· 26.22 mi
7:50/mi
3:34:35
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:25
Pace7:17 /mi
2nd Half
Distance13.11 mi
Time1:59:10
Pace9:05 /mi
📊Positive Split: 24.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:3421:467:0021:46
7:00
-
10K
6.21 mi11:11:2943:417:0221:55
7:03
+0:03
15K
9.32 mi11:34:071:06:197:0722:38
7:17
+0:14
20K
12.43 mi11:57:561:30:087:1523:49
7:40
+0:23
Half
13.11 mi12:03:131:35:257:175:17
7:45
+0:05
25K
15.53 mi12:22:481:55:007:2419:35
8:05
+0:20
30K
18.64 mi12:53:042:25:167:4830:16
9:45
+1:40
20M
20.00 mi13:04:472:36:597:5111:43
8:37
-1:08
21M
21.00 mi13:14:562:47:087:5810:09
10:09
+1:32
35K
21.75 mi13:21:152:53:277:596:19
8:27
-1:42
23M
23.00 mi13:33:573:06:098:0612:42
10:09
+1:42
24M
24.00 mi13:42:543:15:068:088:57
8:57
-1:12
40K
24.85 mi13:51:053:23:178:118:11
9:34
+0:37
25.2M
25.20 mi13:54:243:26:368:123:19
9:37
+0:03
Finish
26.22 mi14:02:233:34:358:117:59
7:50
-1:47

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

7:00 /mi

Average Pace

8:11 /mi

Slowest Pace

10:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:43:24

48% of race

Time at Steady Pace

46:34

22% of race

Time at Slower Pace

1:04:37

30% of race

Average Pace: 8:11 /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 mi10:49:3421:467:0021:46
7:00
#7104
10K
6.21 mi11:11:2943:417:0221:55
7:03
#7037
15K
9.32 mi11:34:071:06:197:0722:38
7:17
#7303
20K
12.43 mi11:57:561:30:087:1523:49
7:40
#7792
Half
13.11 mi12:03:131:35:257:175:17
7:45
#7935
25K
15.53 mi12:22:481:55:007:2419:35
8:05
#8350
30K
18.64 mi12:53:042:25:167:4830:16
9:45
#10202
20M
20.00 mi13:04:472:36:597:5111:43
8:37
#10136
21M
21.00 mi13:14:562:47:087:5810:09
10:09
#10360
35K
21.75 mi13:21:152:53:277:596:19
8:27
#10328
23M
23.00 mi13:33:573:06:098:0612:42
10:09
#10740
24M
24.00 mi13:42:543:15:068:088:57
8:57
#10780
40K
24.85 mi13:51:053:23:178:118:11
9:34
#10866
25.2M
25.20 mi13:54:243:26:368:123:19
9:37
#10818
Finish
26.22 mi14:02:233:34:358:117:59
7:50
#10671
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi71048488488082(Top 32%)1305(Top 12%)1305(Top 28%)
10K6.21 mi3.10 mi7037+67854-6854-67036(Top 28%)888(Top 8%)888(Top 19%)
15K9.32 mi3.11 mi7303-266956-102956-1028082(Top 32%)1305(Top 12%)1305(Top 28%)
20K12.43 mi3.11 mi7792-4891169-2131169-2139524(Top 37%)2091(Top 19%)2091(Top 45%)
Half13.11 mi0.68 mi7935-1431223-541223-5410977(Top 43%)2797(Top 26%)2797(Top 60%)
25K15.53 mi2.42 mi8350-4151442-2191442-21910685(Top 42%)2814(Top 26%)2814(Top 60%)
30K18.64 mi3.11 mi10202-18522426-9842426-98416396(Top 64%)6180(Top 57%)6180(Top 133%)
20M20.00 mi1.36 mi10136+662449-232449-2310121(Top 40%)3012(Top 28%)3012(Top 65%)
21M21.00 mi1.00 mi10360-2242614-1652614-16513560(Top 53%)5070(Top 46%)5070(Top 109%)
35K21.75 mi0.75 mi10328+322632-182632-1810425(Top 41%)3450(Top 32%)3450(Top 74%)
23M23.00 mi1.25 mi10740-4122900-2682900-26815932(Top 62%)6359(Top 58%)6359(Top 136%)
24M24.00 mi1.00 mi10780-402967-672967-6711894(Top 47%)4343(Top 40%)4343(Top 93%)
40K24.85 mi0.85 mi10866-863059-923059-9213393(Top 52%)5231(Top 48%)5231(Top 112%)
25.2M25.20 mi0.35 mi10818+483063-43063-49256(Top 36%)3271(Top 30%)3271(Top 70%)
Finish26.22 mi1.02 mi10671+1473033+303033+307574(Top 30%)2375(Top 22%)2375(Top 51%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 32%
×21story building
+97ft-345ft

Overall

8082

Females

1305

F18-39

1305

5K→10K

3.1 - 6.2 mi

Top 28%
×5story building
+79ft-138ft

Overall

7036

Females

888

F18-39

888

10K→15K

6.2 - 9.3 mi

Top 32%
×3story building
+67ft-78ft

Overall

8082

Females

1305

F18-39

1305

15K→20K

9.3 - 12.4 mi

Top 37%
×5story building
+106ft-86ft

Overall

9524

Females

2091

F18-39

2091

20K→Half

12.4 - 13.1 mi

Top 43%
×2story building
+19ft-37ft

Overall

10977

Females

2797

F18-39

2797

Half→25K

13.1 - 15.5 mi

Top 42%
×4story building
+66ft-88ft

Overall

10685

Females

2814

F18-39

2814

25K→30K

15.5 - 18.6 mi

Top 64%
×9story building
+181ft-148ft

Overall

16396

Females

6180

F18-39

6180

30K→20M

18.6 - 20.0 mi

Top 40%
×5story building
+64ft-50ft

Overall

10121

Females

3012

F18-39

3012

20M→21M

20.0 - 21.0 mi

Top 53%
×8story building
+106ft-24ft

Overall

13560

Females

5070

F18-39

5070

21M→35K

21.0 - 21.8 mi

Top 41%
×7story building
+17ft-86ft

Overall

10425

Females

3450

F18-39

3450

35K→23M

21.8 - 23.0 mi

Top 62%
×5story building
+23ft-63ft

Overall

15932

Females

6359

F18-39

6359

23M→24M

23.0 - 24.0 mi

Top 47%
×6story building
+12ft-82ft

Overall

11894

Females

4343

F18-39

4343

24M→40K

24.0 - 24.9 mi

Top 52%
×1story
+6ft-20ft

Overall

13393

Females

5231

F18-39

5231

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

9256

Females

3271

F18-39

3271

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2story building
+22ft-21ft

Overall

7574

Females

2375

F18-39

2375

Passing Analysis

Category:
Athletes Passed
1292
Passed By
4855
Net Change
-3567
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7104
5K → 10K220153+67#7104#7037
10K → 15K76342-266#7037#7303
15K → 20K81570-489#7303#7792
20K → Half6149-143#7792#7935
Half → 25K98513-415#7935#8350
25K → 30K241874-1852#8350#10202
30K → 20M170103+66#10202#10136
20M → 21M72295-224#10136#10360
21M → 35K9159+32#10360#10328
35K → 23M56468-412#10328#10740
23M → 24M98138-40#10740#10780
24M → 40K67153-86#10780#10866
40K → 25.2M6820+48#10866#10818
25.2M → Finish16518+147#10818#10671
TOTALS12924855-3567
📊

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