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BOSTON MARATHON 2023

Sarah Welch

Bib: 15061•F

OH

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 39%
Gender (Female)
#0 / 11423
Top 20%
Division (F18-39)
#0 / 4884
Top 35%
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
7:44/mi
24:02
↑ 97↓ 3451.5%
10K· 6.21 mi
7:40/mi
47:50
↑ 79↓ 1380.4%
15K· 9.32 mi
7:42/mi
1:11:44
↑ 67↓ 78
20K· 12.43 mi
7:47/mi
1:35:55
↑ 106↓ 860.1%
Half· 13.11 mi
7:42/mi
1:41:10
↑ 19↓ 370.5%
25K· 15.53 mi
7:51/mi
2:00:12
↑ 66↓ 880.2%
30K· 18.64 mi
7:54/mi
2:24:45
↑ 181↓ 1480.2%
20M
7:55/mi
2:35:30
↑ 64↓ 500.2%
21M
8:13/mi
2:43:43
↑ 106↓ 241.6%
35K· 21.75 mi
7:40/mi
2:49:27
↑ 17↓ 861.7%
23M
7:58/mi
2:59:25
↑ 23↓ 630.6%
24M
7:42/mi
3:07:07
↓ 821.3%
40K· 24.85 mi
7:40/mi
3:13:40
↓ 200.3%
25.2M
8:04/mi
3:16:27
↑ 13↓ 160.2%
Finish· 26.22 mi
7:23/mi
3:23:58
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:10
Pace7:43 /mi
2nd Half
Distance13.11 mi
Time1:42:48
Pace7:51 /mi
📊Positive Split: 1.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:1424:027:4424:02
7:44
-
10K
6.21 mi11:19:0247:507:4223:48
7:40
-0:04
15K
9.32 mi11:42:561:11:447:4223:54
7:42
+0:02
20K
12.43 mi12:07:071:35:557:4324:11
7:47
+0:05
Half
13.11 mi12:12:221:41:107:435:15
7:42
-0:05
25K
15.53 mi12:31:242:00:127:4419:02
7:51
+0:09
30K
18.64 mi12:55:572:24:457:4624:33
7:54
+0:03
20M
20.00 mi13:06:422:35:307:4610:45
7:55
+0:01
21M
21.00 mi13:14:552:43:437:488:13
8:13
+0:18
35K
21.75 mi13:20:392:49:277:475:44
7:40
-0:33
23M
23.00 mi13:30:372:59:257:489:58
7:58
+0:18
24M
24.00 mi13:38:193:07:077:487:42
7:42
-0:16
40K
24.85 mi13:44:523:13:407:486:33
7:40
-0:02
25.2M
25.20 mi13:47:393:16:277:482:47
8:04
+0:24
Finish
26.22 mi13:55:103:23:587:477:31
7:23
-0:41

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

7:23 /mi

Average Pace

7:47 /mi

Slowest Pace

8:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:15:45

96% of race

Time at Steady Pace

8:13

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:47 /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 mi10:55:1424:027:4424:02
7:44
#11787
10K
6.21 mi11:19:0247:507:4223:48
7:40
#11797
15K
9.32 mi11:42:561:11:447:4223:54
7:42
#11753
20K
12.43 mi12:07:071:35:557:4324:11
7:47
#11673
Half
13.11 mi12:12:221:41:107:435:15
7:42
#11690
25K
15.53 mi12:31:242:00:127:4419:02
7:51
#11596
30K
18.64 mi12:55:572:24:457:4624:33
7:54
#11294
20M
20.00 mi13:06:422:35:307:4610:45
7:55
#11146
21M
21.00 mi13:14:552:43:437:488:13
8:13
#10968
35K
21.75 mi13:20:392:49:277:475:44
7:40
#10909
23M
23.00 mi13:30:372:59:257:489:58
7:58
#10806
24M
24.00 mi13:38:193:07:077:487:42
7:42
#10714
40K
24.85 mi13:44:523:13:407:486:33
7:40
#10562
25.2M
25.20 mi13:47:393:16:277:482:47
8:04
#10501
Finish
26.22 mi13:55:103:23:587:477:31
7:23
#10344
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi117872743274311791(Top 44%)2785(Top 24%)2785(Top 57%)
10K6.21 mi3.10 mi11797-102763-202763-2011893(Top 45%)2800(Top 25%)2800(Top 57%)
15K9.32 mi3.11 mi11753+442757+62757+611791(Top 44%)2785(Top 24%)2785(Top 57%)
20K12.43 mi3.11 mi11673+802726+312726+3111610(Top 44%)2740(Top 24%)2740(Top 56%)
Half13.11 mi0.68 mi11690-172735-92735-911870(Top 45%)2822(Top 25%)2822(Top 58%)
25K15.53 mi2.42 mi11596+942694+412694+4111520(Top 43%)2775(Top 24%)2775(Top 57%)
30K18.64 mi3.11 mi11294+3022585+1092585+10910167(Top 38%)2239(Top 20%)2239(Top 46%)
20M20.00 mi1.36 mi11146+1482514+712514+719655(Top 36%)2090(Top 18%)2090(Top 43%)
21M21.00 mi1.00 mi10968+1782445+692445+698735(Top 33%)1820(Top 16%)1820(Top 37%)
35K21.75 mi0.75 mi10909+592431+142431+149741(Top 37%)2245(Top 20%)2245(Top 46%)
23M23.00 mi1.25 mi10806+1032408+232408+239503(Top 36%)2268(Top 20%)2268(Top 46%)
24M24.00 mi1.00 mi10714+922385+232385+239116(Top 34%)2160(Top 19%)2160(Top 44%)
40K24.85 mi0.85 mi10562+1522343+422343+427762(Top 29%)1669(Top 15%)1669(Top 34%)
25.2M25.20 mi0.35 mi10501+612319+242319+247015(Top 26%)1438(Top 13%)1438(Top 29%)
Finish26.22 mi1.02 mi10344+1572269+502269+507664(Top 29%)1693(Top 15%)1693(Top 35%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21story building
+97ft-345ft

Overall

11791

Females

2785

F18-39

2785

5K→10K

3.1 - 6.2 mi

Top 45%
×5story building
+79ft-138ft

Overall

11893

Females

2800

F18-39

2800

10K→15K

6.2 - 9.3 mi

Top 44%
×3story building
+67ft-78ft

Overall

11791

Females

2785

F18-39

2785

15K→20K

9.3 - 12.4 mi

Top 44%
×5story building
+106ft-86ft

Overall

11610

Females

2740

F18-39

2740

20K→Half

12.4 - 13.1 mi

Top 45%
×2story building
+19ft-37ft

Overall

11870

Females

2822

F18-39

2822

Half→25K

13.1 - 15.5 mi

Top 43%
×4story building
+66ft-88ft

Overall

11520

Females

2775

F18-39

2775

25K→30K

15.5 - 18.6 mi

Top 38%
×9story building
+181ft-148ft

Overall

10167

Females

2239

F18-39

2239

30K→20M

18.6 - 20.0 mi

Top 36%
×5story building
+64ft-50ft

Overall

9655

Females

2090

F18-39

2090

20M→21M

20.0 - 21.0 mi

Top 33%
×8story building
+106ft-24ft

Overall

8735

Females

1820

F18-39

1820

21M→35K

21.0 - 21.8 mi

Top 37%
×7story building
+17ft-86ft

Overall

9741

Females

2245

F18-39

2245

35K→23M

21.8 - 23.0 mi

Top 36%
×5story building
+23ft-63ft

Overall

9503

Females

2268

F18-39

2268

23M→24M

23.0 - 24.0 mi

Top 34%
×6story building
+12ft-82ft

Overall

9116

Females

2160

F18-39

2160

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

7762

Females

1669

F18-39

1669

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1story
+13ft-16ft

Overall

7015

Females

1438

F18-39

1438

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2story building
+22ft-21ft

Overall

7664

Females

1693

F18-39

1693

Passing Analysis

Category:
Athletes Passed
2359
Passed By
916
Net Change
+1443
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11787
5K → 10K295305-10#11787#11797
10K → 15K205161+44#11797#11753
15K → 20K207127+80#11753#11673
20K → Half1734-17#11673#11690
Half → 25K19096+94#11690#11596
25K → 30K35048+302#11596#11294
30K → 20M17426+148#11294#11146
20M → 21M19012+178#11146#10968
21M → 35K7718+59#10968#10909
35K → 23M14441+103#10909#10806
23M → 24M11422+92#10806#10714
24M → 40K1608+152#10714#10562
40K → 25.2M643+61#10562#10501
25.2M → Finish17215+157#10501#10344
TOTALS2359916+1443
📊

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