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BOSTON MARATHON 2023

Rachela Lack

Bib: 12006•F

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 32%
Gender (Female)
#0 / 11423
Top 12%
Masters (Masters Women)
#0 / 6539
Top 5%
Division (F45-49)
#0 / 1817
Top 4%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:22
Rank: #9818
Start → 5K
7:31/mi
23:22 split
10K· 6.21 mi
45:04
Rank: #8146 (+1672)
5K → 10K
6:59/mi
21:42 split
15K· 9.32 mi
1:06:43
Rank: #7476 (+670)
10K → 15K
6:58/mi
21:39 split
20K· 12.43 mi
1:28:52
Rank: #7233 (+243)
15K → 20K
7:08/mi
22:09 split
Half· 13.11 mi
1:33:38
Rank: #7188 (+45)
20K → Half
6:59/mi
4:46 split
25K· 15.53 mi
1:51:21
Rank: #7183 (+5)
Half → 25K
7:18/mi
17:43 split
30K· 18.64 mi
2:15:14
Rank: #7330 (-147)
25K → 30K
7:41/mi
23:53 split
20M
2:26:01
Rank: #7443 (-113)
30K → 20M
7:56/mi
10:47 split
21M
2:34:28
Rank: #7566 (-123)
20M → 21M
8:27/mi
8:27 split
35K· 21.75 mi
2:40:24
Rank: #7672 (-106)
21M → 35K
7:56/mi
5:56 split
23M
2:51:03
Rank: #7979 (-307)
35K → 23M
8:30/mi
10:39 split
24M
2:59:19
Rank: #8175 (-196)
23M → 24M
8:16/mi
8:16 split
40K· 24.85 mi
3:06:22
Rank: #8294 (-119)
24M → 40K
8:15/mi
7:03 split
25.2M
3:09:28
Rank: #8355 (-61)
40K → 25.2M
8:59/mi
3:06 split
Finish· 26.22 mi
3:17:29
Rank: #8465 (-110)
25.2M → Finish
7:52/mi
8:01 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:38
Pace7:09 /mi
2nd Half
Distance13.11 mi
Time1:43:51
Pace7:55 /mi
📊Positive Split: 10.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:4223:227:3123:22
7:31
-
10K
6.21 mi11:12:2445:047:1521:42
6:59
-0:32
15K
9.32 mi11:34:031:06:437:0921:39
6:58
-0:01
20K
12.43 mi11:56:121:28:527:0922:09
7:08
+0:10
Half
13.11 mi12:00:581:33:387:094:46
6:59
-0:09
25K
15.53 mi12:18:411:51:217:1017:43
7:18
+0:19
30K
18.64 mi12:42:342:15:147:1523:53
7:41
+0:23
20M
20.00 mi12:53:212:26:017:1810:47
7:56
+0:15
21M
21.00 mi13:01:482:34:287:218:27
8:27
+0:31
35K
21.75 mi13:07:442:40:247:235:56
7:56
-0:31
23M
23.00 mi13:18:232:51:037:2610:39
8:30
+0:34
24M
24.00 mi13:26:392:59:197:288:16
8:16
-0:14
40K
24.85 mi13:33:423:06:227:307:03
8:15
-0:01
25.2M
25.20 mi13:36:483:09:287:313:06
8:59
+0:44
Finish
26.22 mi13:44:493:17:297:328:01
7:52
-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

6:58 /mi

Average Pace

7:32 /mi

Slowest Pace

8:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:51:21

56% of race

Time at Steady Pace

48:37

25% of race

Time at Slower Pace

37:31

19% of race

Average Pace: 7:32 /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 mi10:50:4223:227:3123:22
7:31
#9818
10K
6.21 mi11:12:2445:047:1521:42
6:59
#8146
15K
9.32 mi11:34:031:06:437:0921:39
6:58
#7476
20K
12.43 mi11:56:121:28:527:0922:09
7:08
#7233
Half
13.11 mi12:00:581:33:387:094:46
6:59
#7188
25K
15.53 mi12:18:411:51:217:1017:43
7:18
#7183
30K
18.64 mi12:42:342:15:147:1523:53
7:41
#7330
20M
20.00 mi12:53:212:26:017:1810:47
7:56
#7443
21M
21.00 mi13:01:482:34:287:218:27
8:27
#7566
35K
21.75 mi13:07:442:40:247:235:56
7:56
#7672
23M
23.00 mi13:18:232:51:037:2610:39
8:30
#7979
24M
24.00 mi13:26:392:59:197:288:16
8:16
#8175
40K
24.85 mi13:33:423:06:227:307:03
8:15
#8294
25.2M
25.20 mi13:36:483:09:287:313:06
8:59
#8355
Finish
26.22 mi13:44:493:17:297:328:01
7:52
#8465
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi9818176317636376(Top 24%)615(Top 5%)615(Top 34%)
10K6.21 mi3.10 mi8146+16721084+6791084+6796732(Top 25%)685(Top 6%)685(Top 38%)
15K9.32 mi3.11 mi7476+670863+221863+2216376(Top 24%)615(Top 5%)615(Top 34%)
20K12.43 mi3.11 mi7233+243806+57806+576721(Top 25%)712(Top 6%)712(Top 39%)
Half13.11 mi0.68 mi7188+45794+12794+126527(Top 25%)650(Top 6%)650(Top 36%)
25K15.53 mi2.42 mi7183+5805-11805-117349(Top 28%)963(Top 8%)963(Top 53%)
30K18.64 mi3.11 mi7330-147872-67872-678557(Top 32%)1532(Top 13%)1532(Top 84%)
20M20.00 mi1.36 mi7443-113932-60932-609803(Top 37%)2145(Top 19%)2145(Top 118%)
21M21.00 mi1.00 mi7566-123997-65997-6510182(Top 38%)2457(Top 22%)2457(Top 135%)
35K21.75 mi0.75 mi7672-1061037-401037-4011616(Top 44%)3195(Top 28%)3195(Top 176%)
23M23.00 mi1.25 mi7979-3071181-1441181-14413272(Top 50%)4214(Top 37%)4214(Top 232%)
24M24.00 mi1.00 mi8175-1961270-891270-8913061(Top 49%)4150(Top 36%)4150(Top 228%)
40K24.85 mi0.85 mi8294-1191336-661336-6611674(Top 44%)3486(Top 31%)3486(Top 192%)
25.2M25.20 mi0.35 mi8355-611369-331369-3312469(Top 47%)3928(Top 34%)3928(Top 216%)
Finish26.22 mi1.02 mi8465-1101424-551424-5511161(Top 42%)3267(Top 29%)3267(Top 180%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 24%
×21story building
+97ft-345ft

Overall

6376

Females

615

F45-49

615

5K→10K

3.1 - 6.2 mi

Top 25%
×5story building
+79ft-138ft

Overall

6732

Females

685

F45-49

685

10K→15K

6.2 - 9.3 mi

Top 24%
×3story building
+67ft-78ft

Overall

6376

Females

615

F45-49

615

15K→20K

9.3 - 12.4 mi

Top 25%
×5story building
+106ft-86ft

Overall

6721

Females

712

F45-49

712

20K→Half

12.4 - 13.1 mi

Top 25%
×2story building
+19ft-37ft

Overall

6527

Females

650

F45-49

650

Half→25K

13.1 - 15.5 mi

Top 28%
×4story building
+66ft-88ft

Overall

7349

Females

963

F45-49

963

25K→30K

15.5 - 18.6 mi

Top 32%
×9story building
+181ft-148ft

Overall

8557

Females

1532

F45-49

1532

30K→20M

18.6 - 20.0 mi

Top 37%
×5story building
+64ft-50ft

Overall

9803

Females

2145

F45-49

2145

20M→21M

20.0 - 21.0 mi

Top 38%
×8story building
+106ft-24ft

Overall

10182

Females

2457

F45-49

2457

21M→35K

21.0 - 21.8 mi

Top 44%
×7story building
+17ft-86ft

Overall

11616

Females

3195

F45-49

3195

35K→23M

21.8 - 23.0 mi

Top 50%
×5story building
+23ft-63ft

Overall

13272

Females

4214

F45-49

4214

23M→24M

23.0 - 24.0 mi

Top 49%
×6story building
+12ft-82ft

Overall

13061

Females

4150

F45-49

4150

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

11674

Females

3486

F45-49

3486

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

12469

Females

3928

F45-49

3928

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2story building
+22ft-21ft

Overall

11161

Females

3267

F45-49

3267

Passing Analysis

Category:
Athletes Passed
3052
Passed By
1699
Net Change
+1353
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9818
5K → 10K168210+1672#9818#8146
10K → 15K6733+670#8146#7476
15K → 20K25815+243#7476#7233
20K → Half483+45#7233#7188
Half → 25K9186+5#7188#7183
25K → 30K74221-147#7183#7330
30K → 20M42155-113#7330#7443
20M → 21M30153-123#7443#7566
21M → 35K18124-106#7566#7672
35K → 23M30337-307#7672#7979
23M → 24M24220-196#7979#8175
24M → 40K29148-119#8175#8294
40K → 25.2M1576-61#8294#8355
25.2M → Finish38148-110#8355#8465
TOTALS30521699+1353
📊

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