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BOSTON MARATHON 2023

Alison Steer

Bib: 17471•F

TX

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 43%
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
8:11/mi
25:25
↑ 97↓ 3451.5%
10K· 6.21 mi
8:14/mi
51:00
↑ 79↓ 1380.4%
15K· 9.32 mi
8:17/mi
1:16:43
↑ 67↓ 78
20K· 12.43 mi
8:18/mi
1:42:30
↑ 106↓ 860.1%
Half· 13.11 mi
8:26/mi
1:48:15
↑ 19↓ 370.5%
25K· 15.53 mi
8:28/mi
2:08:47
↑ 66↓ 880.2%
30K· 18.64 mi
8:40/mi
2:35:44
↑ 181↓ 1480.2%
20M
8:51/mi
2:47:45
↑ 64↓ 500.2%
21M
9:04/mi
2:56:49
↑ 106↓ 241.6%
35K· 21.75 mi
8:19/mi
3:03:02
↑ 17↓ 861.7%
23M
8:41/mi
3:13:54
↑ 23↓ 630.6%
24M
8:17/mi
3:22:11
↓ 821.3%
40K· 24.85 mi
8:30/mi
3:29:27
↓ 200.3%
25.2M
8:54/mi
3:32:31
↑ 13↓ 160.2%
Finish· 26.22 mi
7:54/mi
3:40:34
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:15
Pace8:15 /mi
2nd Half
Distance13.11 mi
Time1:52:19
Pace8:34 /mi
📊Positive Split: 3.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:5725:258:1125:25
8:11
-
10K
6.21 mi11:41:3251:008:1225:35
8:14
+0:03
15K
9.32 mi12:07:151:16:438:1425:43
8:17
+0:03
20K
12.43 mi12:33:021:42:308:1525:47
8:18
+0:01
Half
13.11 mi12:38:471:48:158:155:45
8:26
+0:08
25K
15.53 mi12:59:192:08:478:1720:32
8:28
+0:02
30K
18.64 mi13:26:162:35:448:2126:57
8:40
+0:12
20M
20.00 mi13:38:172:47:458:2312:01
8:51
+0:11
21M
21.00 mi13:47:212:56:498:259:04
9:04
+0:13
35K
21.75 mi13:53:343:03:028:256:13
8:19
-0:45
23M
23.00 mi14:04:263:13:548:2610:52
8:41
+0:22
24M
24.00 mi14:12:433:22:118:258:17
8:17
-0:24
40K
24.85 mi14:19:593:29:278:267:16
8:30
+0:13
25.2M
25.20 mi14:23:033:32:318:263:04
8:54
+0:24
Finish
26.22 mi14:31:063:40:348:258:03
7:54
-1:00

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

7:54 /mi

Average Pace

8:25 /mi

Slowest Pace

9:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:16:25

89% of race

Time at Steady Pace

24:09

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:25 /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 mi11:15:5725:258:1125:25
8:11
#15336
10K
6.21 mi11:41:3251:008:1225:35
8:14
#15879
15K
9.32 mi12:07:151:16:438:1425:43
8:17
#16049
20K
12.43 mi12:33:021:42:308:1525:47
8:18
#15905
Half
13.11 mi12:38:471:48:158:155:45
8:26
#15966
25K
15.53 mi12:59:192:08:478:1720:32
8:28
#15968
30K
18.64 mi13:26:162:35:448:2126:57
8:40
#15836
20M
20.00 mi13:38:172:47:458:2312:01
8:51
#15801
21M
21.00 mi13:47:212:56:498:259:04
9:04
#15664
35K
21.75 mi13:53:343:03:028:256:13
8:19
#15598
23M
23.00 mi14:04:263:13:548:2610:52
8:41
#15501
24M
24.00 mi14:12:433:22:118:258:17
8:17
#15392
40K
24.85 mi14:19:593:29:278:267:16
8:30
#15310
25.2M
25.20 mi14:23:033:32:318:263:04
8:54
#15235
Finish
26.22 mi14:31:063:40:348:258:03
7:54
#15083
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi153364856485616400(Top 62%)5532(Top 48%)5532(Top 113%)
10K6.21 mi3.10 mi15879-5435207-3515207-35116500(Top 62%)5575(Top 49%)5575(Top 114%)
15K9.32 mi3.11 mi16049-1705315-1085315-10816400(Top 62%)5532(Top 48%)5532(Top 113%)
20K12.43 mi3.11 mi15905+1445247+685247+6815607(Top 59%)5099(Top 45%)5099(Top 104%)
Half13.11 mi0.68 mi15966-615288-415288-4117304(Top 65%)6050(Top 53%)6050(Top 124%)
25K15.53 mi2.42 mi15968-25315-275315-2716012(Top 60%)5446(Top 48%)5446(Top 112%)
30K18.64 mi3.11 mi15836+1325274+415274+4115359(Top 58%)5145(Top 45%)5145(Top 105%)
20M20.00 mi1.36 mi15801+355272+25272+215676(Top 59%)5375(Top 47%)5375(Top 110%)
21M21.00 mi1.00 mi15664+1375222+505222+5013821(Top 52%)4399(Top 39%)4399(Top 90%)
35K21.75 mi0.75 mi15598+665196+265196+2614194(Top 53%)4674(Top 41%)4674(Top 96%)
23M23.00 mi1.25 mi15501+975163+335163+3314276(Top 54%)4776(Top 42%)4776(Top 98%)
24M24.00 mi1.00 mi15392+1095102+615102+6113197(Top 50%)4235(Top 37%)4235(Top 87%)
40K24.85 mi0.85 mi15310+825066+365066+3613370(Top 50%)4406(Top 39%)4406(Top 90%)
25.2M25.20 mi0.35 mi15235+755025+415025+4112020(Top 45%)3758(Top 33%)3758(Top 77%)
Finish26.22 mi1.02 mi15083+1524958+674958+6711443(Top 43%)3431(Top 30%)3431(Top 70%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21story building
+97ft-345ft

Overall

16400

Females

5532

F18-39

5532

5K→10K

3.1 - 6.2 mi

Top 62%
×5story building
+79ft-138ft

Overall

16500

Females

5575

F18-39

5575

10K→15K

6.2 - 9.3 mi

Top 62%
×3story building
+67ft-78ft

Overall

16400

Females

5532

F18-39

5532

15K→20K

9.3 - 12.4 mi

Top 59%
×5story building
+106ft-86ft

Overall

15607

Females

5099

F18-39

5099

20K→Half

12.4 - 13.1 mi

Top 65%
×2story building
+19ft-37ft

Overall

17304

Females

6050

F18-39

6050

Half→25K

13.1 - 15.5 mi

Top 60%
×4story building
+66ft-88ft

Overall

16012

Females

5446

F18-39

5446

25K→30K

15.5 - 18.6 mi

Top 58%
×9story building
+181ft-148ft

Overall

15359

Females

5145

F18-39

5145

30K→20M

18.6 - 20.0 mi

Top 59%
×5story building
+64ft-50ft

Overall

15676

Females

5375

F18-39

5375

20M→21M

20.0 - 21.0 mi

Top 52%
×8story building
+106ft-24ft

Overall

13821

Females

4399

F18-39

4399

21M→35K

21.0 - 21.8 mi

Top 53%
×7story building
+17ft-86ft

Overall

14194

Females

4674

F18-39

4674

35K→23M

21.8 - 23.0 mi

Top 54%
×5story building
+23ft-63ft

Overall

14276

Females

4776

F18-39

4776

23M→24M

23.0 - 24.0 mi

Top 50%
×6story building
+12ft-82ft

Overall

13197

Females

4235

F18-39

4235

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

13370

Females

4406

F18-39

4406

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

12020

Females

3758

F18-39

3758

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2story building
+22ft-21ft

Overall

11443

Females

3431

F18-39

3431

Passing Analysis

Category:
Athletes Passed
1836
Passed By
1583
Net Change
+253
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15336
5K → 10K122665-543#15336#15879
10K → 15K128298-170#15879#16049
15K → 20K23692+144#16049#15905
20K → Half1273-61#15905#15966
Half → 25K142144-2#15966#15968
25K → 30K234102+132#15968#15836
30K → 20M10974+35#15836#15801
20M → 21M16831+137#15801#15664
21M → 35K7913+66#15664#15598
35K → 23M13538+97#15598#15501
23M → 24M12314+109#15501#15392
24M → 40K10523+82#15392#15310
40K → 25.2M805+75#15310#15235
25.2M → Finish16311+152#15235#15083
TOTALS18361583+253
📊

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