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BOSTON MARATHON 2023

Elizabeth Guerrini

Bib: 10801•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 44%
Masters (Masters Women)
#0 / 6539
Top 32%
Division (F50-54)
#0 / 1207
Top 24%
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
7:34/mi
47:33
↑ 79↓ 1380.4%
15K· 9.32 mi
7:41/mi
1:11:26
↑ 67↓ 78
20K· 12.43 mi
8:13/mi
1:36:59
↑ 106↓ 860.1%
Half· 13.11 mi
8:11/mi
1:42:34
↑ 19↓ 370.5%
25K· 15.53 mi
8:43/mi
2:03:41
↑ 66↓ 880.2%
30K· 18.64 mi
8:38/mi
2:30:29
↑ 181↓ 1480.2%
20M
8:47/mi
2:42:25
↑ 64↓ 500.2%
21M
9:51/mi
2:52:16
↑ 106↓ 241.6%
35K· 21.75 mi
9:52/mi
2:59:39
↑ 17↓ 861.7%
23M
10:22/mi
3:12:38
↑ 23↓ 630.6%
24M
9:03/mi
3:21:41
↓ 821.3%
40K· 24.85 mi
8:46/mi
3:29:11
↓ 200.3%
25.2M
9:34/mi
3:32:29
↑ 13↓ 160.2%
Finish· 26.22 mi
8:35/mi
3:41:14
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:34
Pace7:49 /mi
2nd Half
Distance13.11 mi
Time1:58:40
Pace9:03 /mi
📊Positive Split: 15.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:4024:027:4424:02
7:44
-
10K
6.21 mi11:45:1147:337:3923:31
7:34
-0:10
15K
9.32 mi12:09:041:11:267:4023:53
7:41
+0:07
20K
12.43 mi12:34:371:36:597:4825:33
8:13
+0:32
Half
13.11 mi12:40:121:42:347:495:35
8:11
-0:02
25K
15.53 mi13:01:192:03:417:5821:07
8:43
+0:32
30K
18.64 mi13:28:072:30:298:0426:48
8:38
-0:05
20M
20.00 mi13:40:032:42:258:0711:56
8:47
+0:09
21M
21.00 mi13:49:542:52:168:129:51
9:51
+1:04
35K
21.75 mi13:57:172:59:398:167:23
9:52
+0:01
23M
23.00 mi14:10:163:12:388:2312:59
10:22
+0:30
24M
24.00 mi14:19:193:21:418:249:03
9:03
-1:19
40K
24.85 mi14:26:493:29:118:257:30
8:46
-0:17
25.2M
25.20 mi14:30:073:32:298:263:18
9:34
+0:48
Finish
26.22 mi14:38:523:41:148:278:45
8:35
-0:59

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

7:34 /mi

Average Pace

8:27 /mi

Slowest Pace

10:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:42:34

46% of race

Time at Steady Pace

1:25:09

38% of race

Time at Slower Pace

33:31

15% of race

Average Pace: 8:26 /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 mi11:21:4024:027:4424:02
7:44
#11800
10K
6.21 mi11:45:1147:337:3923:31
7:34
#11376
15K
9.32 mi12:09:041:11:267:4023:53
7:41
#11495
20K
12.43 mi12:34:371:36:597:4825:33
8:13
#12440
Half
13.11 mi12:40:121:42:347:495:35
8:11
#12616
25K
15.53 mi13:01:192:03:417:5821:07
8:43
#13575
30K
18.64 mi13:28:072:30:298:0426:48
8:38
#13869
20M
20.00 mi13:40:032:42:258:0711:56
8:47
#14012
21M
21.00 mi13:49:542:52:168:129:51
9:51
#14243
35K
21.75 mi13:57:172:59:398:167:23
9:52
#14592
23M
23.00 mi14:10:163:12:388:2312:59
10:22
#15125
24M
24.00 mi14:19:193:21:418:249:03
9:03
#15233
40K
24.85 mi14:26:493:29:118:257:30
8:46
#15220
25.2M
25.20 mi14:30:073:32:298:263:18
9:34
#15227
Finish
26.22 mi14:38:523:41:148:278:45
8:35
#15241
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi118002756275611773(Top 44%)2776(Top 24%)2776(Top 230%)
10K6.21 mi3.10 mi11376+4242535+2212535+22111073(Top 42%)2360(Top 21%)2360(Top 196%)
15K9.32 mi3.11 mi11495-1192600-652600-6511773(Top 44%)2776(Top 24%)2776(Top 230%)
20K12.43 mi3.11 mi12440-9453171-5713171-57115125(Top 57%)4788(Top 42%)4788(Top 397%)
Half13.11 mi0.68 mi12616-1763273-1023273-10215730(Top 59%)5136(Top 45%)5136(Top 426%)
25K15.53 mi2.42 mi13575-9593848-5753848-57517425(Top 65%)6236(Top 55%)6236(Top 517%)
30K18.64 mi3.11 mi13869-2944059-2114059-21115081(Top 57%)4984(Top 44%)4984(Top 413%)
20M20.00 mi1.36 mi14012-1434174-1154174-11515328(Top 58%)5177(Top 45%)5177(Top 429%)
21M21.00 mi1.00 mi14243-2314341-1674341-16717450(Top 66%)6452(Top 56%)6452(Top 535%)
35K21.75 mi0.75 mi14592-3494558-2174558-21720916(Top 79%)8440(Top 74%)8440(Top 699%)
23M23.00 mi1.25 mi15125-5334916-3584916-35820998(Top 79%)8520(Top 75%)8520(Top 706%)
24M24.00 mi1.00 mi15233-1084997-814997-8117455(Top 66%)6603(Top 58%)6603(Top 547%)
40K24.85 mi0.85 mi15220+135005-85005-814956(Top 56%)5271(Top 46%)5271(Top 437%)
25.2M25.20 mi0.35 mi15227-75020-155020-1515546(Top 58%)5607(Top 49%)5607(Top 465%)
Finish26.22 mi1.02 mi15241-145046-265046-2615929(Top 60%)5764(Top 50%)5764(Top 478%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21story building
+97ft-345ft

Overall

11773

Females

2776

F50-54

2776

5K→10K

3.1 - 6.2 mi

Top 42%
×5story building
+79ft-138ft

Overall

11073

Females

2360

F50-54

2360

10K→15K

6.2 - 9.3 mi

Top 44%
×3story building
+67ft-78ft

Overall

11773

Females

2776

F50-54

2776

15K→20K

9.3 - 12.4 mi

Top 57%
×5story building
+106ft-86ft

Overall

15125

Females

4788

F50-54

4788

20K→Half

12.4 - 13.1 mi

Top 59%
×2story building
+19ft-37ft

Overall

15730

Females

5136

F50-54

5136

Half→25K

13.1 - 15.5 mi

Top 65%
×4story building
+66ft-88ft

Overall

17425

Females

6236

F50-54

6236

25K→30K

15.5 - 18.6 mi

Top 57%
×9story building
+181ft-148ft

Overall

15081

Females

4984

F50-54

4984

30K→20M

18.6 - 20.0 mi

Top 58%
×5story building
+64ft-50ft

Overall

15328

Females

5177

F50-54

5177

20M→21M

20.0 - 21.0 mi

Top 66%
×8story building
+106ft-24ft

Overall

17450

Females

6452

F50-54

6452

21M→35K

21.0 - 21.8 mi

Top 79%
×7story building
+17ft-86ft

Overall

20916

Females

8440

F50-54

8440

35K→23M

21.8 - 23.0 mi

Top 79%
×5story building
+23ft-63ft

Overall

20998

Females

8520

F50-54

8520

23M→24M

23.0 - 24.0 mi

Top 66%
×6story building
+12ft-82ft

Overall

17455

Females

6603

F50-54

6603

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

14956

Females

5271

F50-54

5271

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

15546

Females

5607

F50-54

5607

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2story building
+22ft-21ft

Overall

15929

Females

5764

F50-54

5764

Passing Analysis

Category:
Athletes Passed
1159
Passed By
4600
Net Change
-3441
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11800
5K → 10K563139+424#11800#11376
10K → 15K141260-119#11376#11495
15K → 20K23968-945#11495#12440
20K → Half6182-176#12440#12616
Half → 25K20979-959#12616#13575
25K → 30K110404-294#13575#13869
30K → 20M55198-143#13869#14012
20M → 21M27258-231#14012#14243
21M → 35K4353-349#14243#14592
35K → 23M13546-533#14592#15125
23M → 24M36144-108#15125#15233
24M → 40K6350+13#15233#15220
40K → 25.2M3744-7#15220#15227
25.2M → Finish6175-14#15227#15241
TOTALS11594600-3441
📊

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