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BOSTON MARATHON 2023

Sarah Jackson

Bib: 25278•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ 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
29:51
↑ 97↓ 3451.5%
10K· 6.21 mi
8:55/mi
57:33
↑ 79↓ 1380.4%
15K· 9.32 mi
8:56/mi
1:25:17
↑ 67↓ 78
20K· 12.43 mi
9:31/mi
1:54:51
↑ 106↓ 860.1%
Half· 13.11 mi
8:48/mi
2:00:51
↑ 19↓ 370.5%
25K· 15.53 mi
9:22/mi
2:23:33
↑ 66↓ 880.2%
30K· 18.64 mi
9:39/mi
2:53:33
↑ 181↓ 1480.2%
20M
10:38/mi
3:08:00
↑ 64↓ 500.2%
21M
11:46/mi
3:19:46
↑ 106↓ 241.6%
35K· 21.75 mi
10:19/mi
3:27:29
↑ 17↓ 861.7%
23M
12:51/mi
3:43:34
↑ 23↓ 630.6%
24M
9:53/mi
3:53:27
↓ 821.3%
40K· 24.85 mi
12:13/mi
4:03:54
↓ 200.3%
25.2M
10:26/mi
4:07:30
↑ 13↓ 160.2%
Finish· 26.22 mi
9:06/mi
4:16:46
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:00:51
Pace9:13 /mi
2nd Half
Distance13.11 mi
Time2:15:55
Pace10:22 /mi
📊Positive Split: 12.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:0129:519:3629:51
9:36
-
10K
6.21 mi12:18:4357:339:1627:42
8:55
-0:41
15K
9.32 mi12:46:271:25:179:0927:44
8:56
+0:01
20K
12.43 mi13:16:011:54:519:1429:34
9:31
+0:35
Half
13.11 mi13:22:012:00:519:136:00
8:48
-0:43
25K
15.53 mi13:44:432:23:339:1422:42
9:22
+0:34
30K
18.64 mi14:14:432:53:339:1930:00
9:39
+0:17
20M
20.00 mi14:29:103:08:009:2414:27
10:38
+0:59
21M
21.00 mi14:40:563:19:469:3111:46
11:46
+1:08
35K
21.75 mi14:48:393:27:299:327:43
10:19
-1:27
23M
23.00 mi15:04:443:43:349:4316:05
12:51
+2:32
24M
24.00 mi15:14:373:53:279:449:53
9:53
-2:58
40K
24.85 mi15:25:044:03:549:4910:27
12:13
+2:20
25.2M
25.20 mi15:28:404:07:309:493:36
10:26
-1:47
Finish
26.22 mi15:37:564:16:469:489:16
9:06
-1:20

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

8:48 /mi

Average Pace

9:48 /mi

Slowest Pace

12:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:01:26

24% of race

Time at Steady Pace

2:11:16

51% of race

Time at Slower Pace

1:04:04

25% of race

Average Pace: 9:48 /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 mi11:51:0129:519:3629:51
9:36
#22400
10K
6.21 mi12:18:4357:339:1627:42
8:55
#21614
15K
9.32 mi12:46:271:25:179:0927:44
8:56
#21212
20K
12.43 mi13:16:011:54:519:1429:34
9:31
#21318
Half
13.11 mi13:22:012:00:519:136:00
8:48
#21244
25K
15.53 mi13:44:432:23:339:1422:42
9:22
#21094
30K
18.64 mi14:14:432:53:339:1930:00
9:39
#20870
20M
20.00 mi14:29:103:08:009:2414:27
10:38
#20960
21M
21.00 mi14:40:563:19:469:3111:46
11:46
#21068
35K
21.75 mi14:48:393:27:299:327:43
10:19
#21109
23M
23.00 mi15:04:443:43:349:4316:05
12:51
#21518
24M
24.00 mi15:14:373:53:279:449:53
9:53
#21465
40K
24.85 mi15:25:044:03:549:4910:27
12:13
#21652
25.2M
25.20 mi15:28:404:07:309:493:36
10:26
#21598
Finish
26.22 mi15:37:564:16:469:489:16
9:06
#21486
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi224009073907320175(Top 76%)7768(Top 68%)7768(Top 159%)
10K6.21 mi3.10 mi21614+7868643+4308643+43020507(Top 77%)7986(Top 70%)7986(Top 164%)
15K9.32 mi3.11 mi21212+4028395+2488395+24820175(Top 76%)7768(Top 68%)7768(Top 159%)
20K12.43 mi3.11 mi21318-1068443-488443-4821613(Top 81%)8581(Top 75%)8581(Top 176%)
Half13.11 mi0.68 mi21244+748396+478396+4719531(Top 73%)7409(Top 65%)7409(Top 152%)
25K15.53 mi2.42 mi21094+1508321+758321+7520401(Top 77%)7929(Top 69%)7929(Top 162%)
30K18.64 mi3.11 mi20870+2248198+1238198+12319996(Top 75%)7768(Top 68%)7768(Top 159%)
20M20.00 mi1.36 mi20960-908273-758273-7522013(Top 83%)8986(Top 79%)8986(Top 184%)
21M21.00 mi1.00 mi21068-1088360-878360-8722359(Top 84%)9196(Top 81%)9196(Top 188%)
35K21.75 mi0.75 mi21109-418382-228382-2222039(Top 83%)9070(Top 79%)9070(Top 186%)
23M23.00 mi1.25 mi21518-4098611-2298611-22924934(Top 94%)10596(Top 93%)10596(Top 217%)
24M24.00 mi1.00 mi21465+538593+188593+1820479(Top 77%)8253(Top 72%)8253(Top 169%)
40K24.85 mi0.85 mi21652-1878708-1158708-11524145(Top 91%)10251(Top 90%)10251(Top 210%)
25.2M25.20 mi0.35 mi21598+548684+248684+2418964(Top 71%)7505(Top 66%)7505(Top 154%)
Finish26.22 mi1.02 mi21486+1128630+548630+5418467(Top 69%)7163(Top 63%)7163(Top 147%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21story building
+97ft-345ft

Overall

20175

Females

7768

F18-39

7768

5K→10K

3.1 - 6.2 mi

Top 77%
×5story building
+79ft-138ft

Overall

20507

Females

7986

F18-39

7986

10K→15K

6.2 - 9.3 mi

Top 76%
×3story building
+67ft-78ft

Overall

20175

Females

7768

F18-39

7768

15K→20K

9.3 - 12.4 mi

Top 81%
×5story building
+106ft-86ft

Overall

21613

Females

8581

F18-39

8581

20K→Half

12.4 - 13.1 mi

Top 73%
×2story building
+19ft-37ft

Overall

19531

Females

7409

F18-39

7409

Half→25K

13.1 - 15.5 mi

Top 77%
×4story building
+66ft-88ft

Overall

20401

Females

7929

F18-39

7929

25K→30K

15.5 - 18.6 mi

Top 75%
×9story building
+181ft-148ft

Overall

19996

Females

7768

F18-39

7768

30K→20M

18.6 - 20.0 mi

Top 83%
×5story building
+64ft-50ft

Overall

22013

Females

8986

F18-39

8986

20M→21M

20.0 - 21.0 mi

Top 84%
×8story building
+106ft-24ft

Overall

22359

Females

9196

F18-39

9196

21M→35K

21.0 - 21.8 mi

Top 83%
×7story building
+17ft-86ft

Overall

22039

Females

9070

F18-39

9070

35K→23M

21.8 - 23.0 mi

Top 94%
×5story building
+23ft-63ft

Overall

24934

Females

10596

F18-39

10596

23M→24M

23.0 - 24.0 mi

Top 77%
×6story building
+12ft-82ft

Overall

20479

Females

8253

F18-39

8253

24M→40K

24.0 - 24.9 mi

Top 91%
×1story
+6ft-20ft

Overall

24145

Females

10251

F18-39

10251

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

18964

Females

7505

F18-39

7505

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2story building
+22ft-21ft

Overall

18467

Females

7163

F18-39

7163

Passing Analysis

Category:
Athletes Passed
2279
Passed By
1365
Net Change
+914
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22400
5K → 10K82943+786#22400#21614
10K → 15K42826+402#21614#21212
15K → 20K105211-106#21212#21318
20K → Half751+74#21318#21244
Half → 25K19444+150#21244#21094
25K → 30K27652+224#21094#20870
30K → 20M48138-90#20870#20960
20M → 21M30138-108#20960#21068
21M → 35K2970-41#21068#21109
35K → 23M9418-409#21109#21518
23M → 24M7320+53#21518#21465
24M → 40K9196-187#21465#21652
40K → 25.2M551+54#21652#21598
25.2M → Finish1197+112#21598#21486
TOTALS22791365+914
📊

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