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BOSTON MARATHON 2023

Sarah Sandler

Bib: 27343•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
9:22/mi
29:07
↑ 97↓ 3451.5%
10K· 6.21 mi
9:01/mi
57:08
↑ 79↓ 1380.4%
15K· 9.32 mi
8:55/mi
1:24:50
↑ 67↓ 78
20K· 12.43 mi
9:06/mi
1:53:07
↑ 106↓ 860.1%
Half· 13.11 mi
8:59/mi
1:59:15
↑ 19↓ 370.5%
25K· 15.53 mi
9:07/mi
2:21:21
↑ 66↓ 880.2%
30K· 18.64 mi
9:16/mi
2:50:08
↑ 181↓ 1480.2%
20M
9:20/mi
3:02:49
↑ 64↓ 500.2%
21M
9:43/mi
3:12:32
↑ 106↓ 241.6%
35K· 21.75 mi
9:09/mi
3:19:23
↑ 17↓ 861.7%
23M
9:23/mi
3:31:08
↑ 23↓ 630.6%
24M
9:03/mi
3:40:11
↓ 821.3%
40K· 24.85 mi
9:07/mi
3:47:59
↓ 200.3%
25.2M
9:34/mi
3:51:17
↑ 13↓ 160.2%
Finish· 26.22 mi
8:23/mi
3:59:50
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:59:15
Pace9:06 /mi
2nd Half
Distance13.11 mi
Time2:00:35
Pace9:12 /mi
📊Positive Split: 1.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:4129:079:2229:07
9:22
-
10K
6.21 mi12:14:4257:089:1228:01
9:01
-0:21
15K
9.32 mi12:42:241:24:509:0627:42
8:55
-0:06
20K
12.43 mi13:10:411:53:079:0628:17
9:06
+0:11
Half
13.11 mi13:16:491:59:159:066:08
8:59
-0:07
25K
15.53 mi13:38:552:21:219:0622:06
9:07
+0:08
30K
18.64 mi14:07:422:50:089:0828:47
9:16
+0:09
20M
20.00 mi14:20:233:02:499:0812:41
9:20
+0:04
21M
21.00 mi14:30:063:12:329:109:43
9:43
+0:23
35K
21.75 mi14:36:573:19:239:106:51
9:09
-0:34
23M
23.00 mi14:48:423:31:089:1111:45
9:23
+0:14
24M
24.00 mi14:57:453:40:119:109:03
9:03
-0:20
40K
24.85 mi15:05:333:47:599:107:48
9:07
+0:04
25.2M
25.20 mi15:08:513:51:179:113:18
9:34
+0:27
Finish
26.22 mi15:17:243:59:509:098:33
8:23
-1:11

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

8:23 /mi

Average Pace

9:09 /mi

Slowest Pace

9:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:24:29

60% of race

Time at Steady Pace

1:35:21

40% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:09 /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 mi11:46:4129:079:2229:07
9:22
#21729
10K
6.21 mi12:14:4257:089:1228:01
9:01
#21376
15K
9.32 mi12:42:241:24:509:0627:42
8:55
#21035
20K
12.43 mi13:10:411:53:079:0628:17
9:06
#20790
Half
13.11 mi13:16:491:59:159:066:08
8:59
#20763
25K
15.53 mi13:38:552:21:219:0622:06
9:07
#20560
30K
18.64 mi14:07:422:50:089:0828:47
9:16
#20177
20M
20.00 mi14:20:233:02:499:0812:41
9:20
#20000
21M
21.00 mi14:30:063:12:329:109:43
9:43
#19797
35K
21.75 mi14:36:573:19:239:106:51
9:09
#19757
23M
23.00 mi14:48:423:31:089:1111:45
9:23
#19661
24M
24.00 mi14:57:453:40:119:109:03
9:03
#19562
40K
24.85 mi15:05:333:47:599:107:48
9:07
#19468
25.2M
25.20 mi15:08:513:51:179:113:18
9:34
#19424
Finish
26.22 mi15:17:243:59:509:098:33
8:23
#19280
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi217298753875320115(Top 76%)7738(Top 68%)7738(Top 158%)
10K6.21 mi3.10 mi21376+3538518+2358518+23520952(Top 79%)8232(Top 72%)8232(Top 169%)
15K9.32 mi3.11 mi21035+3418304+2148304+21420115(Top 76%)7738(Top 68%)7738(Top 158%)
20K12.43 mi3.11 mi20790+2458158+1468158+14620159(Top 76%)7752(Top 68%)7752(Top 159%)
Half13.11 mi0.68 mi20763+278141+178141+1720411(Top 77%)7909(Top 69%)7909(Top 162%)
25K15.53 mi2.42 mi20560+2038015+1268015+12619498(Top 73%)7424(Top 65%)7424(Top 152%)
30K18.64 mi3.11 mi20177+3837829+1867829+18618474(Top 69%)6904(Top 60%)6904(Top 141%)
20M20.00 mi1.36 mi20000+1777744+857744+8518179(Top 68%)6842(Top 60%)6842(Top 140%)
21M21.00 mi1.00 mi19797+2037620+1247620+12416947(Top 64%)6163(Top 54%)6163(Top 126%)
35K21.75 mi0.75 mi19757+407609+117609+1118602(Top 70%)7171(Top 63%)7171(Top 147%)
23M23.00 mi1.25 mi19661+967561+487561+4817902(Top 67%)6813(Top 60%)6813(Top 139%)
24M24.00 mi1.00 mi19562+997516+457516+4517485(Top 66%)6633(Top 58%)6633(Top 136%)
40K24.85 mi0.85 mi19468+947473+437473+4316772(Top 63%)6284(Top 55%)6284(Top 129%)
25.2M25.20 mi0.35 mi19424+447447+267447+2615619(Top 59%)5680(Top 50%)5680(Top 116%)
Finish26.22 mi1.02 mi19280+1447368+797368+7914731(Top 55%)5128(Top 45%)5128(Top 105%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21story building
+97ft-345ft

Overall

20115

Females

7738

F18-39

7738

5K→10K

3.1 - 6.2 mi

Top 79%
×5story building
+79ft-138ft

Overall

20952

Females

8232

F18-39

8232

10K→15K

6.2 - 9.3 mi

Top 76%
×3story building
+67ft-78ft

Overall

20115

Females

7738

F18-39

7738

15K→20K

9.3 - 12.4 mi

Top 76%
×5story building
+106ft-86ft

Overall

20159

Females

7752

F18-39

7752

20K→Half

12.4 - 13.1 mi

Top 77%
×2story building
+19ft-37ft

Overall

20411

Females

7909

F18-39

7909

Half→25K

13.1 - 15.5 mi

Top 73%
×4story building
+66ft-88ft

Overall

19498

Females

7424

F18-39

7424

25K→30K

15.5 - 18.6 mi

Top 69%
×9story building
+181ft-148ft

Overall

18474

Females

6904

F18-39

6904

30K→20M

18.6 - 20.0 mi

Top 68%
×5story building
+64ft-50ft

Overall

18179

Females

6842

F18-39

6842

20M→21M

20.0 - 21.0 mi

Top 64%
×8story building
+106ft-24ft

Overall

16947

Females

6163

F18-39

6163

21M→35K

21.0 - 21.8 mi

Top 70%
×7story building
+17ft-86ft

Overall

18602

Females

7171

F18-39

7171

35K→23M

21.8 - 23.0 mi

Top 67%
×5story building
+23ft-63ft

Overall

17902

Females

6813

F18-39

6813

23M→24M

23.0 - 24.0 mi

Top 66%
×6story building
+12ft-82ft

Overall

17485

Females

6633

F18-39

6633

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

16772

Females

6284

F18-39

6284

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

15619

Females

5680

F18-39

5680

25.2M→Finish

25.2 - 26.2 mi

Top 55%
×2story building
+22ft-21ft

Overall

14731

Females

5128

F18-39

5128

Passing Analysis

Category:
Athletes Passed
2839
Passed By
390
Net Change
+2449
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21729
5K → 10K489136+353#21729#21376
10K → 15K39150+341#21376#21035
15K → 20K29752+245#21035#20790
20K → Half4114+27#20790#20763
Half → 25K23027+203#20763#20560
25K → 30K39310+383#20560#20177
30K → 20M19417+177#20177#20000
20M → 21M2118+203#20000#19797
21M → 35K6222+40#19797#19757
35K → 23M11721+96#19757#19661
23M → 24M11314+99#19661#19562
24M → 40K1039+94#19562#19468
40K → 25.2M473+44#19468#19424
25.2M → Finish1517+144#19424#19280
TOTALS2839390+2449
📊

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