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BOSTON MARATHON 2024

Baisong Yan

Bib: 3969•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 29%
Gender (Male)
#0 / 14578
Top 40%
Masters (Masters Men)
#0 / 9729
Top 29%
Division (M40-44)
#0 / 2009
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:09
Rank: #3235
Start → 5K
20:09 | 6:29/mi
10K· 6.21 mi
40:34
Rank: #3329 (-94)
5K → 10K
20:25 | 6:34/mi
15K· 9.32 mi
1:01:56
Rank: #3891 (-562)
10K → 15K
21:22 | 6:53/mi
20K· 12.43 mi
1:24:20
Rank: #4636 (-745)
15K → 20K
22:24 | 7:13/mi
Half· 13.11 mi
1:29:23
Rank: #4879 (-243)
20K → Half
5:03 | 7:24/mi
25K· 15.53 mi
1:48:02
Rank: #5429 (-550)
Half → 25K
18:39 | 7:42/mi
30K· 18.64 mi
2:13:27
Rank: #5917 (-488)
25K → 30K
25:25 | 8:11/mi
20M
2:25:23
Rank: #6223 (-306)
30K → 20M
11:56 | 8:47/mi
21M
2:35:12
Rank: #6510 (-287)
20M → 21M
9:49 | 9:49/mi
35K· 21.75 mi
2:41:38
Rank: #6630 (-120)
21M → 35K
6:26 | 8:36/mi
23M
2:53:12
Rank: #6915 (-285)
35K → 23M
11:34 | 9:14/mi
24M
3:02:15
Rank: #7128 (-213)
23M → 24M
9:03 | 9:03/mi
40K· 24.85 mi
3:10:00
Rank: #7246 (-118)
24M → 40K
7:45 | 9:04/mi
25.2M
3:13:33
Rank: #7297 (-51)
40K → 25.2M
3:33 | 10:18/mi
Finish· 26.22 mi
3:21:54
Rank: #7360 (-63)
25.2M → Finish
8:21 | 8:12/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:23
Pace6:49 /mi
2nd Half
Distance13.11 mi
Time1:52:31
Pace8:35 /mi
📊Positive Split: 25.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:3920:096:2920:09
6:29
-
10K
6.21 mi10:43:0440:346:3220:25
6:34
+0:05
15K
9.32 mi11:04:261:01:566:3921:22
6:53
+0:19
20K
12.43 mi11:26:501:24:206:4722:24
7:13
+0:20
Half
13.11 mi11:31:531:29:236:495:03
7:24
+0:11
25K
15.53 mi11:50:321:48:026:5718:39
7:42
+0:18
30K
18.64 mi12:15:572:13:277:1025:25
8:11
+0:29
20M
20.00 mi12:27:532:25:237:1611:56
8:47
+0:36
21M
21.00 mi12:37:422:35:127:239:49
9:49
+1:02
35K
21.75 mi12:44:082:41:387:266:26
8:36
-1:13
23M
23.00 mi12:55:422:53:127:3211:34
9:14
+0:38
24M
24.00 mi13:04:453:02:157:369:03
9:03
-0:11
40K
24.85 mi13:12:303:10:007:397:45
9:04
+0:01
25.2M
25.20 mi13:16:033:13:337:413:33
10:18
+1:14
Finish
26.22 mi13:24:243:21:547:428:21
8:12
-2:06

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

6:29 /mi

Average Pace

7:42 /mi

Slowest Pace

10:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:29:23

44% of race

Time at Steady Pace

58:51

29% of race

Time at Slower Pace

53:40

27% of race

Average Pace: 7:42 /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 mi10:22:3920:096:2920:09
6:29
#3235
10K
6.21 mi10:43:0440:346:3220:25
6:34
#3329
15K
9.32 mi11:04:261:01:566:3921:22
6:53
#3891
20K
12.43 mi11:26:501:24:206:4722:24
7:13
#4636
Half
13.11 mi11:31:531:29:236:495:03
7:24
#4879
25K
15.53 mi11:50:321:48:026:5718:39
7:42
#5429
30K
18.64 mi12:15:572:13:277:1025:25
8:11
#5917
20M
20.00 mi12:27:532:25:237:1611:56
8:47
#6223
21M
21.00 mi12:37:422:35:127:239:49
9:49
#6510
35K
21.75 mi12:44:082:41:387:266:26
8:36
#6630
23M
23.00 mi12:55:422:53:127:3211:34
9:14
#6915
24M
24.00 mi13:04:453:02:157:369:03
9:03
#7128
40K
24.85 mi13:12:303:10:007:397:45
9:04
#7246
25.2M
25.20 mi13:16:033:13:337:413:33
10:18
#7297
Finish
26.22 mi13:24:243:21:547:428:21
8:12
#7360
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi3235308530855402(Top 21%)4936(Top 34%)4936(Top 246%)
10K6.21 mi3.10 mi3329-943173-883173-883440(Top 13%)3268(Top 22%)3268(Top 163%)
15K9.32 mi3.11 mi3891-5623677-5043677-5045402(Top 21%)4936(Top 34%)4936(Top 246%)
20K12.43 mi3.11 mi4636-7454310-6334310-6336454(Top 25%)5628(Top 39%)5628(Top 280%)
Half13.11 mi0.68 mi4879-2434522-2124522-2128350(Top 33%)6800(Top 47%)6800(Top 338%)
25K15.53 mi2.42 mi5429-5504942-4204942-4208207(Top 32%)6538(Top 45%)6538(Top 325%)
30K18.64 mi3.11 mi5917-4885232-2905232-2908887(Top 35%)6708(Top 46%)6708(Top 334%)
20M20.00 mi1.36 mi6223-3065420-1885420-18810966(Top 43%)7483(Top 51%)7483(Top 372%)
21M21.00 mi1.00 mi6510-2875585-1655585-16512174(Top 48%)7789(Top 53%)7789(Top 388%)
35K21.75 mi0.75 mi6630-1205638-535638-5311259(Top 44%)7325(Top 50%)7325(Top 365%)
23M23.00 mi1.25 mi6915-2855772-1345772-13412299(Top 48%)7708(Top 53%)7708(Top 384%)
24M24.00 mi1.00 mi7128-2135855-835855-8312381(Top 48%)7737(Top 53%)7737(Top 385%)
40K24.85 mi0.85 mi7246-1185882-275882-2711127(Top 44%)6980(Top 48%)6980(Top 347%)
25.2M25.20 mi0.35 mi7297-515888-65888-612000(Top 47%)7361(Top 50%)7361(Top 366%)
Finish26.22 mi1.02 mi7360-635886+25886+29713(Top 38%)6312(Top 43%)6312(Top 314%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 21%
×21stories
+97ft-345ft

Overall

5402

Males

4936

M40-44

4936

5K→10K

3.1 - 6.2 mi

Top 13%
×5stories
+79ft-138ft

Overall

3440

Males

3268

M40-44

3268

10K→15K

6.2 - 9.3 mi

Top 21%
×3stories
+67ft-78ft

Overall

5402

Males

4936

M40-44

4936

15K→20K

9.3 - 12.4 mi

Top 25%
×5stories
+106ft-86ft

Overall

6454

Males

5628

M40-44

5628

20K→Half

12.4 - 13.1 mi

Top 33%
×2stories
+19ft-37ft

Overall

8350

Males

6800

M40-44

6800

Half→25K

13.1 - 15.5 mi

Top 32%
×4stories
+66ft-88ft

Overall

8207

Males

6538

M40-44

6538

25K→30K

15.5 - 18.6 mi

Top 35%
×9stories
+181ft-148ft

Overall

8887

Males

6708

M40-44

6708

30K→20M

18.6 - 20.0 mi

Top 43%
×5stories
+64ft-50ft

Overall

10966

Males

7483

M40-44

7483

20M→21M

20.0 - 21.0 mi

Top 48%
×8stories
+106ft-24ft

Overall

12174

Males

7789

M40-44

7789

21M→35K

21.0 - 21.8 mi

Top 44%
×7stories
+17ft-86ft

Overall

11259

Males

7325

M40-44

7325

35K→23M

21.8 - 23.0 mi

Top 48%
×5stories
+23ft-63ft

Overall

12299

Males

7708

M40-44

7708

23M→24M

23.0 - 24.0 mi

Top 48%
×6stories
+12ft-82ft

Overall

12381

Males

7737

M40-44

7737

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

11127

Males

6980

M40-44

6980

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

12000

Males

7361

M40-44

7361

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2stories
+22ft-21ft

Overall

9713

Males

6312

M40-44

6312

Passing Analysis

Category:
Athletes Passed
664
Passed By
4789
Net Change
-4125
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3235
5K → 10K95189-94#3235#3329
10K → 15K15577-562#3329#3891
15K → 20K34779-745#3891#4636
20K → Half1244-243#4636#4879
Half → 25K67617-550#4879#5429
25K → 30K85573-488#5429#5917
30K → 20M36342-306#5917#6223
20M → 21M41328-287#6223#6510
21M → 35K42162-120#6510#6630
35K → 23M54339-285#6630#6915
23M → 24M49262-213#6915#7128
24M → 40K47165-118#7128#7246
40K → 25.2M3081-51#7246#7297
25.2M → Finish68131-63#7297#7360
TOTALS6644789-4125
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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