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BOSTON MARATHON 2023

Lea Rolfes

Bib: 21972•F

GA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 46%
Division (F45-49)
#0 / 1817
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:15
Rank: #17231
Start → 5K
26:15 | 8:27/mi
10K· 6.21 mi
52:14
Rank: #17261 (-30)
5K → 10K
25:59 | 8:22/mi
15K· 9.32 mi
1:18:15
Rank: #17175 (+86)
10K → 15K
26:01 | 8:22/mi
20K· 12.43 mi
1:45:00
Rank: #17253 (-78)
15K → 20K
26:45 | 8:37/mi
Half· 13.11 mi
1:50:47
Rank: #17260 (-7)
20K → Half
5:47 | 8:29/mi
25K· 15.53 mi
2:11:51
Rank: #17252 (+8)
Half → 25K
21:04 | 8:41/mi
30K· 18.64 mi
2:40:06
Rank: #17289 (-37)
25K → 30K
28:15 | 9:06/mi
20M
2:52:24
Rank: #17252 (+37)
30K → 20M
12:18 | 9:03/mi
21M
3:02:08
Rank: #17227 (+25)
20M → 21M
9:44 | 9:44/mi
35K· 21.75 mi
3:08:41
Rank: #17203 (+24)
21M → 35K
6:33 | 8:45/mi
23M
3:19:57
Rank: #17130 (+73)
35K → 23M
11:16 | 9:00/mi
24M
3:28:42
Rank: #17065 (+65)
23M → 24M
8:45 | 8:45/mi
40K· 24.85 mi
3:36:21
Rank: #17030 (+35)
24M → 40K
7:39 | 8:57/mi
25.2M
3:39:58
Rank: #17079 (-49)
40K → 25.2M
3:37 | 10:29/mi
Finish· 26.22 mi
3:49:24
Rank: #17213 (-134)
25.2M → Finish
9:26 | 9:15/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:47
Pace8:27 /mi
2nd Half
Distance13.11 mi
Time1:58:37
Pace9:03 /mi
📊Positive Split: 7.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:4126:158:2726:15
8:27
-
10K
6.21 mi11:46:4052:148:2425:59
8:22
-0:05
15K
9.32 mi12:12:411:18:158:2426:01
8:22
0:00
20K
12.43 mi12:39:261:45:008:2726:45
8:37
+0:15
Half
13.11 mi12:45:131:50:478:275:47
8:29
-0:08
25K
15.53 mi13:06:172:11:518:2921:04
8:41
+0:12
30K
18.64 mi13:34:322:40:068:3528:15
9:06
+0:25
20M
20.00 mi13:46:502:52:248:3712:18
9:03
-0:03
21M
21.00 mi13:56:343:02:088:409:44
9:44
+0:41
35K
21.75 mi14:03:073:08:418:416:33
8:45
-0:59
23M
23.00 mi14:14:233:19:578:4211:16
9:00
+0:15
24M
24.00 mi14:23:083:28:428:428:45
8:45
-0:15
40K
24.85 mi14:30:473:36:218:427:39
8:57
+0:12
25.2M
25.20 mi14:34:243:39:588:443:37
10:29
+1:32
Finish
26.22 mi14:43:503:49:248:459:26
9:15
-1:14

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

8:22 /mi

Average Pace

8:45 /mi

Slowest Pace

10:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:18:15

34% of race

Time at Steady Pace

1:27:49

38% of race

Time at Slower Pace

1:03:20

28% of race

Average Pace: 8:45 /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 mi11:20:4126:158:2726:15
8:27
#17231
10K
6.21 mi11:46:4052:148:2425:59
8:22
#17261
15K
9.32 mi12:12:411:18:158:2426:01
8:22
#17175
20K
12.43 mi12:39:261:45:008:2726:45
8:37
#17253
Half
13.11 mi12:45:131:50:478:275:47
8:29
#17260
25K
15.53 mi13:06:172:11:518:2921:04
8:41
#17252
30K
18.64 mi13:34:322:40:068:3528:15
9:06
#17289
20M
20.00 mi13:46:502:52:248:3712:18
9:03
#17252
21M
21.00 mi13:56:343:02:088:409:44
9:44
#17227
35K
21.75 mi14:03:073:08:418:416:33
8:45
#17203
23M
23.00 mi14:14:233:19:578:4211:16
9:00
#17130
24M
24.00 mi14:23:083:28:428:428:45
8:45
#17065
40K
24.85 mi14:30:473:36:218:427:39
8:57
#17030
25.2M
25.20 mi14:34:243:39:588:443:37
10:29
#17079
Finish
26.22 mi14:43:503:49:248:459:26
9:15
#17213
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi172316090609017014(Top 64%)5927(Top 52%)5927(Top 326%)
10K6.21 mi3.10 mi17261-306097-76097-717348(Top 65%)6094(Top 53%)6094(Top 335%)
15K9.32 mi3.11 mi17175+866017+806017+8017014(Top 64%)5927(Top 52%)5927(Top 326%)
20K12.43 mi3.11 mi17253-786082-656082-6517577(Top 66%)6278(Top 55%)6278(Top 346%)
Half13.11 mi0.68 mi17260-76085-36085-317658(Top 66%)6291(Top 55%)6291(Top 346%)
25K15.53 mi2.42 mi17252+86089-46089-417338(Top 65%)6199(Top 54%)6199(Top 341%)
30K18.64 mi3.11 mi17289-376131-426131-4217662(Top 66%)6449(Top 56%)6449(Top 355%)
20M20.00 mi1.36 mi17252+376129+26129+216843(Top 63%)6066(Top 53%)6066(Top 334%)
21M21.00 mi1.00 mi17227+256129612917017(Top 64%)6210(Top 54%)6210(Top 342%)
35K21.75 mi0.75 mi17203+246122+76122+716784(Top 63%)6170(Top 54%)6170(Top 340%)
23M23.00 mi1.25 mi17130+736095+276095+2716098(Top 60%)5805(Top 51%)5805(Top 319%)
24M24.00 mi1.00 mi17065+656081+146081+1415984(Top 60%)5811(Top 51%)5811(Top 320%)
40K24.85 mi0.85 mi17030+356082-16082-115921(Top 60%)5819(Top 51%)5819(Top 320%)
25.2M25.20 mi0.35 mi17079-496109-276109-2719144(Top 72%)7603(Top 67%)7603(Top 418%)
Finish26.22 mi1.02 mi17213-1346194-856194-8519228(Top 72%)7581(Top 66%)7581(Top 417%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21stories
+97ft-345ft

Overall

17014

Females

5927

F45-49

5927

5K→10K

3.1 - 6.2 mi

Top 65%
×5stories
+79ft-138ft

Overall

17348

Females

6094

F45-49

6094

10K→15K

6.2 - 9.3 mi

Top 64%
×3stories
+67ft-78ft

Overall

17014

Females

5927

F45-49

5927

15K→20K

9.3 - 12.4 mi

Top 66%
×5stories
+106ft-86ft

Overall

17577

Females

6278

F45-49

6278

20K→Half

12.4 - 13.1 mi

Top 66%
×2stories
+19ft-37ft

Overall

17658

Females

6291

F45-49

6291

Half→25K

13.1 - 15.5 mi

Top 65%
×4stories
+66ft-88ft

Overall

17338

Females

6199

F45-49

6199

25K→30K

15.5 - 18.6 mi

Top 66%
×9stories
+181ft-148ft

Overall

17662

Females

6449

F45-49

6449

30K→20M

18.6 - 20.0 mi

Top 63%
×5stories
+64ft-50ft

Overall

16843

Females

6066

F45-49

6066

20M→21M

20.0 - 21.0 mi

Top 64%
×8stories
+106ft-24ft

Overall

17017

Females

6210

F45-49

6210

21M→35K

21.0 - 21.8 mi

Top 63%
×7stories
+17ft-86ft

Overall

16784

Females

6170

F45-49

6170

35K→23M

21.8 - 23.0 mi

Top 60%
×5stories
+23ft-63ft

Overall

16098

Females

5805

F45-49

5805

23M→24M

23.0 - 24.0 mi

Top 60%
×6stories
+12ft-82ft

Overall

15984

Females

5811

F45-49

5811

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

15921

Females

5819

F45-49

5819

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

19144

Females

7603

F45-49

7603

25.2M→Finish

25.2 - 26.2 mi

Top 72%
×2stories
+22ft-21ft

Overall

19228

Females

7581

F45-49

7581

Passing Analysis

Category:
Athletes Passed
1569
Passed By
1551
Net Change
+18
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17231
5K → 10K306336-30#17231#17261
10K → 15K228142+86#17261#17175
15K → 20K144222-78#17175#17253
20K → Half2936-7#17253#17260
Half → 25K125117+8#17260#17252
25K → 30K158195-37#17252#17289
30K → 20M9861+37#17289#17252
20M → 21M10681+25#17252#17227
21M → 35K5228+24#17227#17203
35K → 23M11946+73#17203#17130
23M → 24M9732+65#17130#17065
24M → 40K7338+35#17065#17030
40K → 25.2M857-49#17030#17079
25.2M → Finish26160-134#17079#17213
TOTALS15691551+18
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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