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BOSTON MARATHON 2023

Sarah Stevenson

Bib: 10391•F

TX

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 33%
Gender (Female)
#0 / 11423
Top 13%
Division (F18-39)
#0 / 4884
Top 24%
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
7:43/mi
23:59
↑ 97↓ 3451.5%
10K· 6.21 mi
7:32/mi
47:24
↑ 79↓ 1380.4%
15K· 9.32 mi
7:38/mi
1:11:07
↑ 67↓ 78
20K· 12.43 mi
7:52/mi
1:35:33
↑ 106↓ 860.1%
Half· 13.11 mi
7:23/mi
1:40:35
↑ 19↓ 370.5%
25K· 15.53 mi
7:25/mi
1:58:35
↑ 66↓ 880.2%
30K· 18.64 mi
7:26/mi
2:21:40
↑ 181↓ 1480.2%
20M
7:31/mi
2:31:53
↑ 64↓ 500.2%
21M
7:40/mi
2:39:33
↑ 106↓ 241.6%
35K· 21.75 mi
7:05/mi
2:44:51
↑ 17↓ 861.7%
23M
7:28/mi
2:54:12
↑ 23↓ 630.6%
24M
7:21/mi
3:01:33
↓ 821.3%
40K· 24.85 mi
7:28/mi
3:07:56
↓ 200.3%
25.2M
8:01/mi
3:10:42
↑ 13↓ 160.2%
Finish· 26.22 mi
7:25/mi
3:18:15
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:40:35
Pace7:40 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:37:40
Pace7:27 /mi
📊Negative Split: 2.9% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:3323:597:4323:59
7:43
-
10K
6.21 mi11:14:5847:247:3823:25
7:32
-0:11
15K
9.32 mi11:38:411:11:077:3823:43
7:38
+0:06
20K
12.43 mi12:03:071:35:337:4124:26
7:52
+0:14
Half
13.11 mi12:08:091:40:357:405:02
7:23
-0:29
25K
15.53 mi12:26:091:58:357:3818:00
7:25
+0:02
30K
18.64 mi12:49:142:21:407:3623:05
7:26
+0:01
20M
20.00 mi12:59:272:31:537:3610:13
7:31
+0:05
21M
21.00 mi13:07:072:39:337:367:40
7:40
+0:09
35K
21.75 mi13:12:252:44:517:355:18
7:05
-0:35
23M
23.00 mi13:21:462:54:127:349:21
7:28
+0:23
24M
24.00 mi13:29:073:01:337:347:21
7:21
-0:07
40K
24.85 mi13:35:303:07:567:346:23
7:28
+0:07
25.2M
25.20 mi13:38:163:10:427:342:46
8:01
+0:33
Finish
26.22 mi13:45:493:18:157:347:33
7:25
-0:36

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

7:05 /mi

Average Pace

7:34 /mi

Slowest Pace

8:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:51:03

86% of race

Time at Steady Pace

27:12

14% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:34 /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 mi10:51:3323:597:4323:59
7:43
#11628
10K
6.21 mi11:14:5847:247:3823:25
7:32
#11174
15K
9.32 mi11:38:411:11:077:3823:43
7:38
#11195
20K
12.43 mi12:03:071:35:337:4124:26
7:52
#11426
Half
13.11 mi12:08:091:40:357:405:02
7:23
#11297
25K
15.53 mi12:26:091:58:357:3818:00
7:25
#10759
30K
18.64 mi12:49:142:21:407:3623:05
7:26
#9969
20M
20.00 mi12:59:272:31:537:3610:13
7:31
#9695
21M
21.00 mi13:07:072:39:337:367:40
7:40
#9415
35K
21.75 mi13:12:252:44:517:355:18
7:05
#9242
23M
23.00 mi13:21:462:54:127:349:21
7:28
#9025
24M
24.00 mi13:29:073:01:337:347:21
7:21
#8895
40K
24.85 mi13:35:303:07:567:346:23
7:28
#8795
25.2M
25.20 mi13:38:163:10:427:342:46
8:01
#8730
Finish
26.22 mi13:45:493:18:157:347:33
7:25
#8675
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi116282652265211301(Top 42%)2511(Top 22%)2511(Top 51%)
10K6.21 mi3.10 mi11174+4542422+2302422+23010787(Top 41%)2193(Top 19%)2193(Top 45%)
15K9.32 mi3.11 mi11195-212435-132435-1311301(Top 42%)2511(Top 22%)2511(Top 51%)
20K12.43 mi3.11 mi11426-2312568-1332568-13312284(Top 46%)3121(Top 27%)3121(Top 64%)
Half13.11 mi0.68 mi11297+1292497+712497+719295(Top 35%)1587(Top 14%)1587(Top 32%)
25K15.53 mi2.42 mi10759+5382228+2692228+2698216(Top 31%)1260(Top 11%)1260(Top 26%)
30K18.64 mi3.11 mi9969+7901880+3481880+3486784(Top 25%)862(Top 8%)862(Top 18%)
20M20.00 mi1.36 mi9695+2741791+891791+896946(Top 26%)1014(Top 9%)1014(Top 21%)
21M21.00 mi1.00 mi9415+2801699+921699+925485(Top 21%)667(Top 6%)667(Top 14%)
35K21.75 mi0.75 mi9242+1731647+521647+525876(Top 22%)739(Top 6%)739(Top 15%)
23M23.00 mi1.25 mi9025+2171579+681579+686272(Top 24%)914(Top 8%)914(Top 19%)
24M24.00 mi1.00 mi8895+1301558+211558+216762(Top 25%)1184(Top 10%)1184(Top 24%)
40K24.85 mi0.85 mi8795+1001536+221536+226547(Top 25%)1183(Top 10%)1183(Top 24%)
25.2M25.20 mi0.35 mi8730+651520+161520+166734(Top 25%)1320(Top 12%)1320(Top 27%)
Finish26.22 mi1.02 mi8675+551518+21518+27879(Top 30%)1778(Top 16%)1778(Top 36%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21story building
+97ft-345ft

Overall

11301

Females

2511

F18-39

2511

5K→10K

3.1 - 6.2 mi

Top 41%
×5story building
+79ft-138ft

Overall

10787

Females

2193

F18-39

2193

10K→15K

6.2 - 9.3 mi

Top 42%
×3story building
+67ft-78ft

Overall

11301

Females

2511

F18-39

2511

15K→20K

9.3 - 12.4 mi

Top 46%
×5story building
+106ft-86ft

Overall

12284

Females

3121

F18-39

3121

20K→Half

12.4 - 13.1 mi

Top 35%
×2story building
+19ft-37ft

Overall

9295

Females

1587

F18-39

1587

Half→25K

13.1 - 15.5 mi

Top 31%
×4story building
+66ft-88ft

Overall

8216

Females

1260

F18-39

1260

25K→30K

15.5 - 18.6 mi

Top 25%
×9story building
+181ft-148ft

Overall

6784

Females

862

F18-39

862

30K→20M

18.6 - 20.0 mi

Top 26%
×5story building
+64ft-50ft

Overall

6946

Females

1014

F18-39

1014

20M→21M

20.0 - 21.0 mi

Top 21%
×8story building
+106ft-24ft

Overall

5485

Females

667

F18-39

667

21M→35K

21.0 - 21.8 mi

Top 22%
×7story building
+17ft-86ft

Overall

5876

Females

739

F18-39

739

35K→23M

21.8 - 23.0 mi

Top 24%
×5story building
+23ft-63ft

Overall

6272

Females

914

F18-39

914

23M→24M

23.0 - 24.0 mi

Top 25%
×6story building
+12ft-82ft

Overall

6762

Females

1184

F18-39

1184

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

6547

Females

1183

F18-39

1183

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

6734

Females

1320

F18-39

1320

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2story building
+22ft-21ft

Overall

7879

Females

1778

F18-39

1778

Passing Analysis

Category:
Athletes Passed
3693*
Passed By
740
Net Change
+2953
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11628
5K → 10K584130+454#11628#11174
10K → 15K181202-21#11174#11195
15K → 20K98329-231#11195#11426
20K → Half1301+129#11426#11297
Half → 25K5380+538#11297#10759
25K → 30K791*1+790#10759#9969
30K → 20M2740+274#9969#9695
20M → 21M2800+280#9695#9415
21M → 35K1752+173#9415#9242
35K → 23M2225+217#9242#9025
23M → 24M14818+130#9025#8895
24M → 40K11313+100#8895#8795
40K → 25.2M705+65#8795#8730
25.2M → Finish8934+55#8730#8675
TOTALS3693*740+2953

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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