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BOSTON MARATHON 2023

Florence Lee

Bib: 23139•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 49%
Division (F50-54)
#0 / 1207
Top 45%
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
8:49/mi
27:22
↑ 97↓ 3451.5%
10K· 6.21 mi
8:38/mi
54:12
↑ 79↓ 1380.4%
15K· 9.32 mi
8:40/mi
1:21:09
↑ 67↓ 78
20K· 12.43 mi
8:51/mi
1:48:40
↑ 106↓ 860.1%
Half· 13.11 mi
8:48/mi
1:54:40
↑ 19↓ 370.5%
25K· 15.53 mi
8:41/mi
2:15:43
↑ 66↓ 880.2%
30K· 18.64 mi
9:02/mi
2:43:47
↑ 181↓ 1480.2%
20M
9:11/mi
2:56:16
↑ 64↓ 500.2%
21M
9:34/mi
3:05:50
↑ 106↓ 241.6%
35K· 21.75 mi
8:48/mi
3:12:25
↑ 17↓ 861.7%
23M
8:56/mi
3:23:36
↑ 23↓ 630.6%
24M
8:36/mi
3:32:12
↓ 821.3%
40K· 24.85 mi
8:43/mi
3:39:39
↓ 200.3%
25.2M
9:49/mi
3:43:02
↑ 13↓ 160.2%
Finish· 26.22 mi
8:18/mi
3:51:29
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:40
Pace8:45 /mi
2nd Half
Distance13.11 mi
Time1:56:49
Pace8:55 /mi
📊Positive Split: 1.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:4627:228:4927:22
8:49
-
10K
6.21 mi11:50:3654:128:4326:50
8:38
-0:11
15K
9.32 mi12:17:331:21:098:4226:57
8:40
+0:02
20K
12.43 mi12:45:041:48:408:4527:31
8:51
+0:11
Half
13.11 mi12:51:041:54:408:456:00
8:48
-0:03
25K
15.53 mi13:12:072:15:438:4421:03
8:41
-0:07
30K
18.64 mi13:40:112:43:478:4728:04
9:02
+0:21
20M
20.00 mi13:52:402:56:168:4912:29
9:11
+0:09
21M
21.00 mi14:02:143:05:508:519:34
9:34
+0:23
35K
21.75 mi14:08:493:12:258:516:35
8:48
-0:46
23M
23.00 mi14:20:003:23:368:5111:11
8:56
+0:08
24M
24.00 mi14:28:363:32:128:518:36
8:36
-0:20
40K
24.85 mi14:36:033:39:398:507:27
8:43
+0:07
25.2M
25.20 mi14:39:263:43:028:513:23
9:49
+1:06
Finish
26.22 mi14:47:533:51:298:508:27
8:18
-1:31

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

8:18 /mi

Average Pace

8:50 /mi

Slowest Pace

9:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:26:03

89% of race

Time at Steady Pace

22:03

10% of race

Time at Slower Pace

3:23

1% of race

Average Pace: 8:50 /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 mi11:23:4627:228:4927:22
8:49
#19512
10K
6.21 mi11:50:3654:128:4326:50
8:38
#19257
15K
9.32 mi12:17:331:21:098:4226:57
8:40
#19080
20K
12.43 mi12:45:041:48:408:4527:31
8:51
#19037
Half
13.11 mi12:51:041:54:408:456:00
8:48
#19057
25K
15.53 mi13:12:072:15:438:4421:03
8:41
#18785
30K
18.64 mi13:40:112:43:478:4728:04
9:02
#18492
20M
20.00 mi13:52:402:56:168:4912:29
9:11
#18417
21M
21.00 mi14:02:143:05:508:519:34
9:34
#18275
35K
21.75 mi14:08:493:12:258:516:35
8:48
#18218
23M
23.00 mi14:20:003:23:368:5111:11
8:56
#18061
24M
24.00 mi14:28:363:32:128:518:36
8:36
#17943
40K
24.85 mi14:36:033:39:398:507:27
8:43
#17825
25.2M
25.20 mi14:39:263:43:028:513:23
9:49
#17809
Finish
26.22 mi14:47:533:51:298:508:27
8:18
#17667
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi195127520752018864(Top 71%)7021(Top 61%)7021(Top 582%)
10K6.21 mi3.10 mi19257+2557310+2107310+21019057(Top 72%)7113(Top 62%)7113(Top 589%)
15K9.32 mi3.11 mi19080+1777180+1307180+13018864(Top 71%)7021(Top 61%)7021(Top 582%)
20K12.43 mi3.11 mi19037+437142+387142+3818982(Top 71%)7074(Top 62%)7074(Top 586%)
Half13.11 mi0.68 mi19057-207155-137155-1319465(Top 73%)7343(Top 64%)7343(Top 608%)
25K15.53 mi2.42 mi18785+2727002+1537002+15317297(Top 65%)6170(Top 54%)6170(Top 511%)
30K18.64 mi3.11 mi18492+2936858+1446858+14417365(Top 65%)6283(Top 55%)6283(Top 521%)
20M20.00 mi1.36 mi18417+756821+376821+3717495(Top 66%)6448(Top 56%)6448(Top 534%)
21M21.00 mi1.00 mi18275+1426765+566765+5616306(Top 61%)5808(Top 51%)5808(Top 481%)
35K21.75 mi0.75 mi18218+576735+306735+3016971(Top 64%)6265(Top 55%)6265(Top 519%)
23M23.00 mi1.25 mi18061+1576645+906645+9015732(Top 59%)5601(Top 49%)5601(Top 464%)
24M24.00 mi1.00 mi17943+1186590+556590+5515102(Top 57%)5297(Top 46%)5297(Top 439%)
40K24.85 mi0.85 mi17825+1186526+646526+6414652(Top 55%)5126(Top 45%)5126(Top 425%)
25.2M25.20 mi0.35 mi17809+166523+36523+316651(Top 63%)6240(Top 55%)6240(Top 517%)
Finish26.22 mi1.02 mi17667+1426458+656458+6514106(Top 53%)4810(Top 42%)4810(Top 399%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21story building
+97ft-345ft

Overall

18864

Females

7021

F50-54

7021

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

19057

Females

7113

F50-54

7113

10K→15K

6.2 - 9.3 mi

Top 71%
×3story building
+67ft-78ft

Overall

18864

Females

7021

F50-54

7021

15K→20K

9.3 - 12.4 mi

Top 71%
×5story building
+106ft-86ft

Overall

18982

Females

7074

F50-54

7074

20K→Half

12.4 - 13.1 mi

Top 73%
×2story building
+19ft-37ft

Overall

19465

Females

7343

F50-54

7343

Half→25K

13.1 - 15.5 mi

Top 65%
×4story building
+66ft-88ft

Overall

17297

Females

6170

F50-54

6170

25K→30K

15.5 - 18.6 mi

Top 65%
×9story building
+181ft-148ft

Overall

17365

Females

6283

F50-54

6283

30K→20M

18.6 - 20.0 mi

Top 66%
×5story building
+64ft-50ft

Overall

17495

Females

6448

F50-54

6448

20M→21M

20.0 - 21.0 mi

Top 61%
×8story building
+106ft-24ft

Overall

16306

Females

5808

F50-54

5808

21M→35K

21.0 - 21.8 mi

Top 64%
×7story building
+17ft-86ft

Overall

16971

Females

6265

F50-54

6265

35K→23M

21.8 - 23.0 mi

Top 59%
×5story building
+23ft-63ft

Overall

15732

Females

5601

F50-54

5601

23M→24M

23.0 - 24.0 mi

Top 57%
×6story building
+12ft-82ft

Overall

15102

Females

5297

F50-54

5297

24M→40K

24.0 - 24.9 mi

Top 55%
×1story
+6ft-20ft

Overall

14652

Females

5126

F50-54

5126

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

16651

Females

6240

F50-54

6240

25.2M→Finish

25.2 - 26.2 mi

Top 53%
×2story building
+22ft-21ft

Overall

14106

Females

4810

F50-54

4810

Passing Analysis

Category:
Athletes Passed
2561
Passed By
716
Net Change
+1845
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19512
5K → 10K488233+255#19512#19257
10K → 15K281104+177#19257#19080
15K → 20K180137+43#19080#19037
20K → Half1737-20#19037#19057
Half → 25K2819+272#19057#18785
25K → 30K33845+293#18785#18492
30K → 20M12752+75#18492#18417
20M → 21M16826+142#18417#18275
21M → 35K8225+57#18275#18218
35K → 23M1669+157#18218#18061
23M → 24M1268+118#18061#17943
24M → 40K1224+118#17943#17825
40K → 25.2M3317+16#17825#17809
25.2M → Finish15210+142#17809#17667
TOTALS2561716+1845
📊

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