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BOSTON MARATHON 2023

Alison Baker

Bib: 16863•F

MB

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 38%
Gender (Female)
#0 / 11423
Top 19%
Masters (Masters Women)
#0 / 6539
Top 8%
Division (F45-49)
#0 / 1817
Top 8%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:55
Rank: #11435
Start → 5K
7:42/mi
23:55 split
10K· 6.21 mi
47:17
Rank: #11002 (+433)
5K → 10K
7:31/mi
23:22 split
15K· 9.32 mi
1:10:35
Rank: #10696 (+306)
10K → 15K
7:30/mi
23:18 split
20K· 12.43 mi
1:34:01
Rank: #10397 (+299)
15K → 20K
7:33/mi
23:26 split
Half· 13.11 mi
1:39:02
Rank: #10316 (+81)
20K → Half
7:21/mi
5:01 split
25K· 15.53 mi
1:57:32
Rank: #10199 (+117)
Half → 25K
7:38/mi
18:30 split
30K· 18.64 mi
2:21:40
Rank: #9971 (+228)
25K → 30K
7:46/mi
24:08 split
20M
2:32:29
Rank: #9931 (+40)
30K → 20M
7:58/mi
10:49 split
21M
2:40:42
Rank: #9830 (+101)
20M → 21M
8:13/mi
8:13 split
35K· 21.75 mi
2:46:44
Rank: #9928 (-98)
21M → 35K
8:04/mi
6:02 split
23M
2:57:12
Rank: #10039 (-111)
35K → 23M
8:22/mi
10:28 split
24M
3:05:29
Rank: #10163 (-124)
23M → 24M
8:17/mi
8:17 split
40K· 24.85 mi
3:12:32
Rank: #10198 (-35)
24M → 40K
8:15/mi
7:03 split
25.2M
3:15:33
Rank: #10201 (-3)
40K → 25.2M
8:45/mi
3:01 split
Finish· 26.22 mi
3:23:20
Rank: #10150 (+51)
25.2M → Finish
7:38/mi
7:47 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:02
Pace7:33 /mi
2nd Half
Distance13.11 mi
Time1:44:18
Pace7:57 /mi
📊Positive Split: 5.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:0223:557:4223:55
7:42
-
10K
6.21 mi11:37:2447:177:3723:22
7:31
-0:11
15K
9.32 mi12:00:421:10:357:3423:18
7:30
-0:01
20K
12.43 mi12:24:081:34:017:3423:26
7:33
+0:03
Half
13.11 mi12:29:091:39:027:335:01
7:21
-0:12
25K
15.53 mi12:47:391:57:327:3418:30
7:38
+0:17
30K
18.64 mi13:11:472:21:407:3624:08
7:46
+0:08
20M
20.00 mi13:22:362:32:297:3710:49
7:58
+0:12
21M
21.00 mi13:30:492:40:427:398:13
8:13
+0:15
35K
21.75 mi13:36:512:46:447:406:02
8:04
-0:09
23M
23.00 mi13:47:192:57:127:4210:28
8:22
+0:18
24M
24.00 mi13:55:363:05:297:448:17
8:17
-0:05
40K
24.85 mi14:02:393:12:327:457:03
8:15
-0:02
25.2M
25.20 mi14:05:403:15:337:463:01
8:45
+0:30
Finish
26.22 mi14:13:273:23:207:467:47
7:38
-1:07

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

7:21 /mi

Average Pace

7:46 /mi

Slowest Pace

8:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:46:18

82% of race

Time at Steady Pace

34:01

17% of race

Time at Slower Pace

3:01

1% of race

Average Pace: 7:45 /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 mi11:14:0223:557:4223:55
7:42
#11435
10K
6.21 mi11:37:2447:177:3723:22
7:31
#11002
15K
9.32 mi12:00:421:10:357:3423:18
7:30
#10696
20K
12.43 mi12:24:081:34:017:3423:26
7:33
#10397
Half
13.11 mi12:29:091:39:027:335:01
7:21
#10316
25K
15.53 mi12:47:391:57:327:3418:30
7:38
#10199
30K
18.64 mi13:11:472:21:407:3624:08
7:46
#9971
20M
20.00 mi13:22:362:32:297:3710:49
7:58
#9931
21M
21.00 mi13:30:492:40:427:398:13
8:13
#9830
35K
21.75 mi13:36:512:46:447:406:02
8:04
#9928
23M
23.00 mi13:47:192:57:127:4210:28
8:22
#10039
24M
24.00 mi13:55:363:05:297:448:17
8:17
#10163
40K
24.85 mi14:02:393:12:327:457:03
8:15
#10198
25.2M
25.20 mi14:05:403:15:337:463:01
8:45
#10201
Finish
26.22 mi14:13:273:23:207:467:47
7:38
#10150
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi114352557255710188(Top 38%)1932(Top 17%)1932(Top 106%)
10K6.21 mi3.10 mi11002+4332326+2312326+23110635(Top 40%)2120(Top 19%)2120(Top 117%)
15K9.32 mi3.11 mi10696+3062168+1582168+15810188(Top 38%)1932(Top 17%)1932(Top 106%)
20K12.43 mi3.11 mi10397+2992021+1472021+1479670(Top 36%)1767(Top 15%)1767(Top 97%)
Half13.11 mi0.68 mi10316+811983+381983+389112(Top 34%)1536(Top 13%)1536(Top 85%)
25K15.53 mi2.42 mi10199+1171951+321951+329798(Top 37%)1917(Top 17%)1917(Top 106%)
30K18.64 mi3.11 mi9971+2281882+691882+699131(Top 34%)1769(Top 15%)1769(Top 97%)
20M20.00 mi1.36 mi9931+401889-71889-79984(Top 38%)2215(Top 19%)2215(Top 122%)
21M21.00 mi1.00 mi9830+1011868+211868+218732(Top 33%)1817(Top 16%)1817(Top 100%)
35K21.75 mi0.75 mi9928-981930-621930-6212578(Top 47%)3739(Top 33%)3739(Top 206%)
23M23.00 mi1.25 mi10039-1112012-822012-8212304(Top 46%)3682(Top 32%)3682(Top 203%)
24M24.00 mi1.00 mi10163-1242107-952107-9513171(Top 49%)4209(Top 37%)4209(Top 232%)
40K24.85 mi0.85 mi10198-352145-382145-3811675(Top 44%)3487(Top 31%)3487(Top 192%)
25.2M25.20 mi0.35 mi10201-32161-162161-1611046(Top 41%)3204(Top 28%)3204(Top 176%)
Finish26.22 mi1.02 mi10150+512170-92170-99567(Top 36%)2497(Top 22%)2497(Top 137%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21story building
+97ft-345ft

Overall

10188

Females

1932

F45-49

1932

5K→10K

3.1 - 6.2 mi

Top 40%
×5story building
+79ft-138ft

Overall

10635

Females

2120

F45-49

2120

10K→15K

6.2 - 9.3 mi

Top 38%
×3story building
+67ft-78ft

Overall

10188

Females

1932

F45-49

1932

15K→20K

9.3 - 12.4 mi

Top 36%
×5story building
+106ft-86ft

Overall

9670

Females

1767

F45-49

1767

20K→Half

12.4 - 13.1 mi

Top 34%
×2story building
+19ft-37ft

Overall

9112

Females

1536

F45-49

1536

Half→25K

13.1 - 15.5 mi

Top 37%
×4story building
+66ft-88ft

Overall

9798

Females

1917

F45-49

1917

25K→30K

15.5 - 18.6 mi

Top 34%
×9story building
+181ft-148ft

Overall

9131

Females

1769

F45-49

1769

30K→20M

18.6 - 20.0 mi

Top 38%
×5story building
+64ft-50ft

Overall

9984

Females

2215

F45-49

2215

20M→21M

20.0 - 21.0 mi

Top 33%
×8story building
+106ft-24ft

Overall

8732

Females

1817

F45-49

1817

21M→35K

21.0 - 21.8 mi

Top 47%
×7story building
+17ft-86ft

Overall

12578

Females

3739

F45-49

3739

35K→23M

21.8 - 23.0 mi

Top 46%
×5story building
+23ft-63ft

Overall

12304

Females

3682

F45-49

3682

23M→24M

23.0 - 24.0 mi

Top 49%
×6story building
+12ft-82ft

Overall

13171

Females

4209

F45-49

4209

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

11675

Females

3487

F45-49

3487

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

11046

Females

3204

F45-49

3204

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2story building
+22ft-21ft

Overall

9567

Females

2497

F45-49

2497

Passing Analysis

Category:
Athletes Passed
2358*
Passed By
1071
Net Change
+1285
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11435
5K → 10K564131+433#11435#11002
10K → 15K36862+306#11002#10696
15K → 20K33132+299#10696#10397
20K → Half865+81#10397#10316
Half → 25K19174+117#10316#10199
25K → 30K291*63+228#10199#9971
30K → 20M10666+40#9971#9931
20M → 21M13332+101#9931#9830
21M → 35K19117-98#9830#9928
35K → 23M43153-111#9928#10039
23M → 24M45168-124#10039#10163
24M → 40K5489-35#10163#10198
40K → 25.2M28*31-3#10198#10201
25.2M → Finish9948+51#10201#10150
TOTALS2358*1071+1285

* 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