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BOSTON MARATHON 2024

Catherine Lui

ON

Bib: 14517 F

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 48%
Gender (Female)
#0 / 10924
Top 36%
Masters (Masters Women)
#0 / 6263
Top 24%
Division (F45-49)
#0 / 1753
Top 29%
Race Day Weather
55°/45°F
scattered clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:00/mi
24:51
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:04/mi
49:54
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:01/mi
1:14:48
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:10/mi
1:40:11
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:08/mi
1:45:44
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:24/mi
2:06:07
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:00/mi
2:34:06
↑ 181↓ 1480.2%
138 ft elev
20M
9:12/mi
2:46:36
↑ 64↓ 500.2%
148 ft elev
21M
9:43/mi
2:56:19
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
9:15/mi
3:03:14
↑ 17↓ 861.7%
156 ft elev
23M
8:56/mi
3:14:25
↑ 23↓ 630.6%
116 ft elev
24M
8:34/mi
3:22:59
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:33/mi
3:30:18
↓ 200.3%
20 ft elev
25.2M
9:46/mi
3:33:40
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:57/mi
3:41:46
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:45:448:04 /mi⚡ faster
2nd Half
1:56:028:51 /mi+9.7%
Positive split — 9.7% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:0824:518:0024:51
8:00
-
10K
6.21 mi11:18:1149:548:0225:03
8:04
+0:04
15K
9.32 mi11:43:051:14:488:0224:54
8:01
-0:03
20K
12.43 mi12:08:281:40:118:0425:23
8:10
+0:09
Half
13.11 mi12:14:011:45:448:045:33
8:08
-0:02
25K
15.53 mi12:34:242:06:078:0720:23
8:24
+0:16
30K
18.64 mi13:02:232:34:068:1627:59
9:00
+0:36
20M
20.00 mi13:14:532:46:368:2012:30
9:12
+0:12
21M
21.00 mi13:24:362:56:198:249:43
9:43
+0:31
35K
21.75 mi13:31:313:03:148:266:55
9:15
-0:28
23M
23.00 mi13:42:423:14:258:2711:11
8:56
-0:19
24M
24.00 mi13:51:163:22:598:278:34
8:34
-0:22
40K
24.85 mi13:58:353:30:188:287:19
8:33
-0:01
25.2M
25.20 mi14:01:573:33:408:293:22
9:46
+1:13
Finish
26.22 mi14:10:033:41:468:288:06
7:57
-1:49

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

7:57 /mi

Average Pace

8:28 /mi

Slowest Pace

9:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Segment Time Comparison

Time at Faster Pace

1:53:50

51% of race

Time at Steady Pace

36:16

16% of race

Time at Slower Pace

1:11:40

32% of race

Average Pace: 8:27 /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 mi10:53:0824:518:0024:51
8:00
#14637
10K
6.21 mi11:18:1149:548:0225:03
8:04
#14637
15K
9.32 mi11:43:051:14:488:0224:54
8:01
#14228
20K
12.43 mi12:08:281:40:118:0425:23
8:10
#13826
Half
13.11 mi12:14:011:45:448:045:33
8:08
#13797
25K
15.53 mi12:34:242:06:078:0720:23
8:24
#13545
30K
18.64 mi13:02:232:34:068:1627:59
9:00
#13406
20M
20.00 mi13:14:532:46:368:2012:30
9:12
#13325
21M
21.00 mi13:24:362:56:198:249:43
9:43
#13198
35K
21.75 mi13:31:313:03:148:266:55
9:15
#13230
23M
23.00 mi13:42:423:14:258:2711:11
8:56
#13038
24M
24.00 mi13:51:163:22:598:278:34
8:34
#12870
40K
24.85 mi13:58:353:30:188:287:19
8:33
#12631
25.2M
25.20 mi14:01:573:33:408:293:22
9:46
#12567
Finish
26.22 mi14:10:033:41:468:288:06
7:57
#12382
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi14637471447141355141104110
10K6.21 mi3.10 mi14637471447141465647164716
15K9.32 mi3.11 mi14228+4094471+2434471+2431355141104110
20K12.43 mi3.11 mi13826+4024258+2134258+2131296038263826
Half13.11 mi0.68 mi13797+294237+214237+211363942684268
25K15.53 mi2.42 mi13545+2524119+1184119+1181256838123812
30K18.64 mi3.11 mi13406+1394142-234142-231327544364436
20M20.00 mi1.36 mi13325+814170-284170-281314146414641
21M21.00 mi1.00 mi13198+1274154+164154+161179041514151
35K21.75 mi0.75 mi13230-324202-484202-481446055495549
23M23.00 mi1.25 mi13038+1924158+444158+441083438143814
24M24.00 mi1.00 mi12870+1684101+574101+57987733803380
40K24.85 mi0.85 mi12631+2394021+804021+80870129332933
25.2M25.20 mi0.35 mi12567+644001+204001+20996736113611
Finish26.22 mi1.02 mi12382+1853940+613940+61826127172717

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21story building
+97ft-345ft

Overall

13551

Females

4110

F45-49

4110

5K→10K

3.1 - 6.2 mi

Top 57%
×5story building
+79ft-138ft

Overall

14656

Females

4716

F45-49

4716

10K→15K

6.2 - 9.3 mi

Top 53%
×3story building
+67ft-78ft

Overall

13551

Females

4110

F45-49

4110

15K→20K

9.3 - 12.4 mi

Top 51%
×5story building
+106ft-86ft

Overall

12960

Females

3826

F45-49

3826

20K→Half

12.4 - 13.1 mi

Top 53%
×2story building
+19ft-37ft

Overall

13639

Females

4268

F45-49

4268

Half→25K

13.1 - 15.5 mi

Top 49%
×4story building
+66ft-88ft

Overall

12568

Females

3812

F45-49

3812

25K→30K

15.5 - 18.6 mi

Top 52%
×9story building
+181ft-148ft

Overall

13275

Females

4436

F45-49

4436

30K→20M

18.6 - 20.0 mi

Top 51%
×5story building
+64ft-50ft

Overall

13141

Females

4641

F45-49

4641

20M→21M

20.0 - 21.0 mi

Top 46%
×8story building
+106ft-24ft

Overall

11790

Females

4151

F45-49

4151

21M→35K

21.0 - 21.8 mi

Top 57%
×7story building
+17ft-86ft

Overall

14460

Females

5549

F45-49

5549

35K→23M

21.8 - 23.0 mi

Top 42%
×5story building
+23ft-63ft

Overall

10834

Females

3814

F45-49

3814

23M→24M

23.0 - 24.0 mi

Top 39%
×6story building
+12ft-82ft

Overall

9877

Females

3380

F45-49

3380

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

8701

Females

2933

F45-49

2933

40K→25.2M

24.9 - 25.2 mi

Top 39%
×1story
+13ft-16ft

Overall

9967

Females

3611

F45-49

3611

25.2M→Finish

25.2 - 26.2 mi

Top 32%
×2story building
+22ft-21ft

Overall

8261

Females

2717

F45-49

2717

Passing Analysis

Category:
Athletes Passed
3354
Passed By
1099
Net Change
+2255
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14637
5K → 10K2852850#14637#14637
10K → 15K48172+409#14637#14228
15K → 20K46866+402#14228#13826
20K → Half5122+29#13826#13797
Half → 25K33684+252#13797#13545
25K → 30K359220+139#13545#13406
30K → 20M17998+81#13406#13325
20M → 21M19063+127#13325#13198
21M → 35K6496-32#13198#13230
35K → 23M23745+192#13230#13038
23M → 24M18719+168#13038#12870
24M → 40K2434+239#12870#12631
40K → 25.2M8016+64#12631#12567
25.2M → Finish1949+185#12567#12382
TOTALS33541099+2255

Passing Charts

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