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BOSTON MARATHON 2024

Chi Lee

Bib: 4027•M

0:00
0:00
/ mi
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Overall
#0 / 25550
Top 24%
Gender (Male)
#0 / 14578
Top 35%
Division (M18-39)
#0 / 4849
Race Day Weather
55°/45°F
scattered clouds

⏱️ 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
6:34/mi
20:24
↑ 97↓ 3451.5%
10K· 6.21 mi
6:30/mi
40:37
↑ 79↓ 1380.4%
15K· 9.32 mi
6:34/mi
1:01:02
↑ 67↓ 78
20K· 12.43 mi
6:46/mi
1:22:03
↑ 106↓ 860.1%
Half· 13.11 mi
6:36/mi
1:26:33
↑ 19↓ 370.5%
25K· 15.53 mi
7:03/mi
1:43:39
↑ 66↓ 880.2%
30K· 18.64 mi
7:51/mi
2:08:03
↑ 181↓ 1480.2%
20M
8:20/mi
2:19:23
↑ 64↓ 500.2%
21M
9:08/mi
2:28:31
↑ 106↓ 241.6%
35K· 21.75 mi
7:52/mi
2:34:24
↑ 17↓ 861.7%
23M
10:38/mi
2:47:43
↑ 23↓ 630.6%
24M
8:51/mi
2:56:34
↓ 821.3%
40K· 24.85 mi
9:14/mi
3:04:28
↓ 200.3%
25.2M
11:16/mi
3:08:21
↑ 13↓ 160.2%
Finish· 26.22 mi
8:34/mi
3:17:05
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:33
Pace6:36 /mi
2nd Half
Distance13.11 mi
Time1:50:32
Pace8:26 /mi
📊Positive Split: 27.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:0320:246:3420:24
6:34
-
10K
6.21 mi10:44:1640:376:3220:13
6:30
-0:04
15K
9.32 mi11:04:411:01:026:3320:25
6:34
+0:04
20K
12.43 mi11:25:421:22:036:3621:01
6:46
+0:12
Half
13.11 mi11:30:121:26:336:364:30
6:36
-0:10
25K
15.53 mi11:47:181:43:396:4017:06
7:03
+0:27
30K
18.64 mi12:11:422:08:036:5224:24
7:51
+0:48
20M
20.00 mi12:23:022:19:236:5811:20
8:20
+0:29
21M
21.00 mi12:32:102:28:317:049:08
9:08
+0:48
35K
21.75 mi12:38:032:34:247:065:53
7:52
-1:16
23M
23.00 mi12:51:222:47:437:1813:19
10:38
+2:46
24M
24.00 mi13:00:132:56:347:218:51
8:51
-1:47
40K
24.85 mi13:08:073:04:287:257:54
9:14
+0:23
25.2M
25.20 mi13:12:003:08:217:283:53
11:16
+2:02
Finish
26.22 mi13:20:443:17:057:318:44
8:34
-2:42

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

6:30 /mi

Average Pace

7:31 /mi

Slowest Pace

11:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:43:39

53% of race

Time at Steady Pace

50:21

26% of race

Time at Slower Pace

43:05

22% of race

Average Pace: 7:31 /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 mi10:24:0320:246:3420:24
6:34
#3766
10K
6.21 mi10:44:1640:376:3220:13
6:30
#3368
15K
9.32 mi11:04:411:01:026:3320:25
6:34
#3272
20K
12.43 mi11:25:421:22:036:3621:01
6:46
#3293
Half
13.11 mi11:30:121:26:336:364:30
6:36
#3265
25K
15.53 mi11:47:181:43:396:4017:06
7:03
#3462
30K
18.64 mi12:11:422:08:036:5224:24
7:51
#4214
20M
20.00 mi12:23:022:19:236:5811:20
8:20
#4514
21M
21.00 mi12:32:102:28:317:049:08
9:08
#4718
35K
21.75 mi12:38:032:34:247:065:53
7:52
#4737
23M
23.00 mi12:51:222:47:437:1813:19
10:38
#5459
24M
24.00 mi13:00:132:56:347:218:51
8:51
#5659
40K
24.85 mi13:08:073:04:287:257:54
9:14
#5823
25.2M
25.20 mi13:12:003:08:217:283:53
11:16
#5978
Finish
26.22 mi13:20:443:17:057:318:44
8:34
#6164
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3766357035703107(Top 12%)2961(Top 20%)2961(Top 61%)
10K6.21 mi3.10 mi3368+3983206+3643206+3643058(Top 12%)2917(Top 20%)2917(Top 60%)
15K9.32 mi3.11 mi3272+963113+933113+933107(Top 12%)2961(Top 20%)2961(Top 61%)
20K12.43 mi3.11 mi3293-213135-223135-223620(Top 14%)3414(Top 23%)3414(Top 70%)
Half13.11 mi0.68 mi3265+283107+283107+283205(Top 13%)3049(Top 21%)3049(Top 63%)
25K15.53 mi2.42 mi3462-1973281-1743281-1744599(Top 18%)4186(Top 29%)4186(Top 86%)
30K18.64 mi3.11 mi4214-7523924-6433924-6437017(Top 27%)5633(Top 39%)5633(Top 116%)
20M20.00 mi1.36 mi4514-3004153-2294153-2298575(Top 34%)6283(Top 43%)6283(Top 130%)
21M21.00 mi1.00 mi4718-2044299-1464299-1469161(Top 36%)6353(Top 44%)6353(Top 131%)
35K21.75 mi0.75 mi4737-194300-14300-16924(Top 27%)5185(Top 36%)5185(Top 107%)
23M23.00 mi1.25 mi5459-7224791-4914791-49117387(Top 68%)10246(Top 70%)10246(Top 211%)
24M24.00 mi1.00 mi5659-2004906-1154906-11511338(Top 44%)7227(Top 50%)7227(Top 149%)
40K24.85 mi0.85 mi5823-1644982-764982-7611938(Top 47%)7393(Top 51%)7393(Top 152%)
25.2M25.20 mi0.35 mi5978-1555075-935075-9315270(Top 60%)9052(Top 62%)9052(Top 187%)
Finish26.22 mi1.02 mi6164-1865158-835158-8311867(Top 46%)7430(Top 51%)7430(Top 153%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21story building
+97ft-345ft

Overall

3107

Males

2961

M18-39

2961

5K→10K

3.1 - 6.2 mi

Top 12%
×5story building
+79ft-138ft

Overall

3058

Males

2917

M18-39

2917

10K→15K

6.2 - 9.3 mi

Top 12%
×3story building
+67ft-78ft

Overall

3107

Males

2961

M18-39

2961

15K→20K

9.3 - 12.4 mi

Top 14%
×5story building
+106ft-86ft

Overall

3620

Males

3414

M18-39

3414

20K→Half

12.4 - 13.1 mi

Top 13%
×2story building
+19ft-37ft

Overall

3205

Males

3049

M18-39

3049

Half→25K

13.1 - 15.5 mi

Top 18%
×4story building
+66ft-88ft

Overall

4599

Males

4186

M18-39

4186

25K→30K

15.5 - 18.6 mi

Top 27%
×9story building
+181ft-148ft

Overall

7017

Males

5633

M18-39

5633

30K→20M

18.6 - 20.0 mi

Top 34%
×5story building
+64ft-50ft

Overall

8575

Males

6283

M18-39

6283

20M→21M

20.0 - 21.0 mi

Top 36%
×8story building
+106ft-24ft

Overall

9161

Males

6353

M18-39

6353

21M→35K

21.0 - 21.8 mi

Top 27%
×7story building
+17ft-86ft

Overall

6924

Males

5185

M18-39

5185

35K→23M

21.8 - 23.0 mi

Top 68%
×5story building
+23ft-63ft

Overall

17387

Males

10246

M18-39

10246

23M→24M

23.0 - 24.0 mi

Top 44%
×6story building
+12ft-82ft

Overall

11338

Males

7227

M18-39

7227

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

11938

Males

7393

M18-39

7393

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

15270

Males

9052

M18-39

9052

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2story building
+22ft-21ft

Overall

11867

Males

7430

M18-39

7430

Passing Analysis

Category:
Athletes Passed
1063
Passed By
3461
Net Change
-2398
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3766
5K → 10K42123+398#3766#3368
10K → 15K14549+96#3368#3272
15K → 20K97118-21#3272#3293
20K → Half4416+28#3293#3265
Half → 25K78275-197#3265#3462
25K → 30K42794-752#3462#4214
30K → 20M37337-300#4214#4514
20M → 21M35239-204#4514#4718
21M → 35K4564-19#4718#4737
35K → 23M14736-722#4737#5459
23M → 24M34234-200#5459#5659
24M → 40K39203-164#5659#5823
40K → 25.2M7162-155#5823#5978
25.2M → Finish25211-186#5978#6164
TOTALS10633461-2398
📊

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