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BOSTON MARATHON 2023

Rachel Lim

Bib: 22922•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F50-54)
#0 / 1207
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
9:26/mi
29:18
↑ 97↓ 3451.5%
10K· 6.21 mi
9:27/mi
58:41
↑ 79↓ 1380.4%
15K· 9.32 mi
9:32/mi
1:28:18
↑ 67↓ 78
20K· 12.43 mi
9:11/mi
1:56:49
↑ 106↓ 860.1%
Half· 13.11 mi
8:49/mi
2:02:50
↑ 19↓ 370.5%
25K· 15.53 mi
9:40/mi
2:26:16
↑ 66↓ 880.2%
30K· 18.64 mi
10:41/mi
2:59:27
↑ 181↓ 1480.2%
20M
10:31/mi
3:13:44
↑ 64↓ 500.2%
21M
11:43/mi
3:25:27
↑ 106↓ 241.6%
35K· 21.75 mi
10:38/mi
3:33:24
↑ 17↓ 861.7%
23M
11:00/mi
3:47:10
↑ 23↓ 630.6%
24M
10:56/mi
3:58:06
↓ 821.3%
40K· 24.85 mi
11:22/mi
4:07:49
↓ 200.3%
25.2M
12:05/mi
4:11:59
↑ 13↓ 160.2%
Finish· 26.22 mi
10:57/mi
4:23:09
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:02:50
Pace9:22 /mi
2nd Half
Distance13.11 mi
Time2:20:19
Pace10:42 /mi
📊Positive Split: 14.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:26:0629:189:2629:18
9:26
-
10K
6.21 mi11:55:2958:419:2729:23
9:27
+0:01
15K
9.32 mi12:25:061:28:189:2829:37
9:32
+0:05
20K
12.43 mi12:53:371:56:499:2428:31
9:11
-0:21
Half
13.11 mi12:59:382:02:509:226:01
8:49
-0:22
25K
15.53 mi13:23:042:26:169:2523:26
9:40
+0:51
30K
18.64 mi13:56:152:59:279:3833:11
10:41
+1:01
20M
20.00 mi14:10:323:13:449:4114:17
10:31
-0:10
21M
21.00 mi14:22:153:25:279:4711:43
11:43
+1:12
35K
21.75 mi14:30:123:33:249:497:57
10:38
-1:05
23M
23.00 mi14:43:583:47:109:5313:46
11:00
+0:22
24M
24.00 mi14:54:543:58:069:5510:56
10:56
-0:04
40K
24.85 mi15:04:374:07:499:589:43
11:22
+0:26
25.2M
25.20 mi15:08:474:11:5910:004:10
12:05
+0:43
Finish
26.22 mi15:19:574:23:0910:0311:10
10:57
-1:08

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

8:49 /mi

Average Pace

10:03 /mi

Slowest Pace

12:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:26:16

56% of race

Time at Steady Pace

1:31:17

35% of race

Time at Slower Pace

25:36

10% of race

Average Pace: 10:02 /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 mi11:26:0629:189:2629:18
9:26
#21886
10K
6.21 mi11:55:2958:419:2729:23
9:27
#22189
15K
9.32 mi12:25:061:28:189:2829:37
9:32
#22216
20K
12.43 mi12:53:371:56:499:2428:31
9:11
#21806
Half
13.11 mi12:59:382:02:509:226:01
8:49
#21729
25K
15.53 mi13:23:042:26:169:2523:26
9:40
#21632
30K
18.64 mi13:56:152:59:279:3833:11
10:41
#21845
20M
20.00 mi14:10:323:13:449:4114:17
10:31
#21835
21M
21.00 mi14:22:153:25:279:4711:43
11:43
#21888
35K
21.75 mi14:30:123:33:249:497:57
10:38
#21930
23M
23.00 mi14:43:583:47:109:5313:46
11:00
#21962
24M
24.00 mi14:54:543:58:069:5510:56
10:56
#21993
40K
24.85 mi15:04:374:07:499:589:43
11:22
#22027
25.2M
25.20 mi15:08:474:11:5910:004:10
12:05
#22049
Finish
26.22 mi15:19:574:23:0910:0311:10
10:57
#22122
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi218868827882722356(Top 84%)8987(Top 79%)8987(Top 745%)
10K6.21 mi3.10 mi22189-3038946-1198946-11922392(Top 84%)9027(Top 79%)9027(Top 748%)
15K9.32 mi3.11 mi22216-278944+28944+222356(Top 84%)8987(Top 79%)8987(Top 745%)
20K12.43 mi3.11 mi21806+4108714+2308714+23020493(Top 77%)7957(Top 70%)7957(Top 659%)
Half13.11 mi0.68 mi21729+778674+408674+4019663(Top 74%)7491(Top 66%)7491(Top 621%)
25K15.53 mi2.42 mi21632+978618+568618+5621350(Top 80%)8469(Top 74%)8469(Top 702%)
30K18.64 mi3.11 mi21845-2138745-1278745-12722573(Top 85%)9223(Top 81%)9223(Top 764%)
20M20.00 mi1.36 mi21835+108751-68751-621764(Top 82%)8853(Top 78%)8853(Top 733%)
21M21.00 mi1.00 mi21888-538792-418792-4122268(Top 84%)9148(Top 80%)9148(Top 758%)
35K21.75 mi0.75 mi21930-428814-228814-2222641(Top 85%)9387(Top 82%)9387(Top 778%)
23M23.00 mi1.25 mi21962-328844-308844-3022335(Top 84%)9235(Top 81%)9235(Top 765%)
24M24.00 mi1.00 mi21993-318876-328876-3222925(Top 86%)9593(Top 84%)9593(Top 795%)
40K24.85 mi0.85 mi22027-348902-268902-2623012(Top 86%)9665(Top 85%)9665(Top 801%)
25.2M25.20 mi0.35 mi22049-228918-168918-1622665(Top 85%)9483(Top 83%)9483(Top 786%)
Finish26.22 mi1.02 mi22122-738972-548972-5423893(Top 90%)10101(Top 88%)10101(Top 837%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 84%
×21story building
+97ft-345ft

Overall

22356

Females

8987

F50-54

8987

5K→10K

3.1 - 6.2 mi

Top 84%
×5story building
+79ft-138ft

Overall

22392

Females

9027

F50-54

9027

10K→15K

6.2 - 9.3 mi

Top 84%
×3story building
+67ft-78ft

Overall

22356

Females

8987

F50-54

8987

15K→20K

9.3 - 12.4 mi

Top 77%
×5story building
+106ft-86ft

Overall

20493

Females

7957

F50-54

7957

20K→Half

12.4 - 13.1 mi

Top 74%
×2story building
+19ft-37ft

Overall

19663

Females

7491

F50-54

7491

Half→25K

13.1 - 15.5 mi

Top 80%
×4story building
+66ft-88ft

Overall

21350

Females

8469

F50-54

8469

25K→30K

15.5 - 18.6 mi

Top 85%
×9story building
+181ft-148ft

Overall

22573

Females

9223

F50-54

9223

30K→20M

18.6 - 20.0 mi

Top 82%
×5story building
+64ft-50ft

Overall

21764

Females

8853

F50-54

8853

20M→21M

20.0 - 21.0 mi

Top 84%
×8story building
+106ft-24ft

Overall

22268

Females

9148

F50-54

9148

21M→35K

21.0 - 21.8 mi

Top 85%
×7story building
+17ft-86ft

Overall

22641

Females

9387

F50-54

9387

35K→23M

21.8 - 23.0 mi

Top 84%
×5story building
+23ft-63ft

Overall

22335

Females

9235

F50-54

9235

23M→24M

23.0 - 24.0 mi

Top 86%
×6story building
+12ft-82ft

Overall

22925

Females

9593

F50-54

9593

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

23012

Females

9665

F50-54

9665

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

22665

Females

9483

F50-54

9483

25.2M→Finish

25.2 - 26.2 mi

Top 90%
×2story building
+22ft-21ft

Overall

23893

Females

10101

F50-54

10101

Passing Analysis

Category:
Athletes Passed
1284
Passed By
1520
Net Change
-236
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21886
5K → 10K128431-303#21886#22189
10K → 15K159186-27#22189#22216
15K → 20K42313+410#22216#21806
20K → Half803+77#21806#21729
Half → 25K15053+97#21729#21632
25K → 30K80293-213#21632#21845
30K → 20M7262+10#21845#21835
20M → 21M3992-53#21835#21888
21M → 35K1456-42#21888#21930
35K → 23M4880-32#21930#21962
23M → 24M3263-31#21962#21993
24M → 40K2963-34#21993#22027
40K → 25.2M1032-22#22027#22049
25.2M → Finish2093-73#22049#22122
TOTALS12841520-236
📊

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