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BOSTON MARATHON 2023

Michael Liu

Bib: 12622•M

BC

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 42%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 46%
Division (M50-54)
#0 / 2052
Top 49%
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
7:28/mi
23:13
↑ 97↓ 3451.5%
10K· 6.21 mi
7:31/mi
46:33
↑ 79↓ 1380.4%
15K· 9.32 mi
7:29/mi
1:09:49
↑ 67↓ 78
20K· 12.43 mi
7:33/mi
1:33:17
↑ 106↓ 860.1%
Half· 13.11 mi
7:36/mi
1:38:28
↑ 19↓ 370.5%
25K· 15.53 mi
7:56/mi
1:57:42
↑ 66↓ 880.2%
30K· 18.64 mi
8:11/mi
2:23:09
↑ 181↓ 1480.2%
20M
8:15/mi
2:34:22
↑ 64↓ 500.2%
21M
9:02/mi
2:43:24
↑ 106↓ 241.6%
35K· 21.75 mi
8:00/mi
2:49:23
↑ 17↓ 861.7%
23M
8:26/mi
2:59:56
↑ 23↓ 630.6%
24M
8:11/mi
3:08:07
↓ 821.3%
40K· 24.85 mi
8:32/mi
3:15:25
↓ 200.3%
25.2M
9:11/mi
3:18:35
↑ 13↓ 160.2%
Finish· 26.22 mi
7:58/mi
3:26:42
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:28
Pace7:31 /mi
2nd Half
Distance13.11 mi
Time1:48:14
Pace8:15 /mi
📊Positive Split: 9.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:4823:137:2823:13
7:28
-
10K
6.21 mi11:14:0846:337:2923:20
7:31
+0:03
15K
9.32 mi11:37:241:09:497:2923:16
7:29
-0:02
20K
12.43 mi12:00:521:33:177:3023:28
7:33
+0:04
Half
13.11 mi12:06:031:38:287:315:11
7:36
+0:03
25K
15.53 mi12:25:171:57:427:3519:14
7:56
+0:20
30K
18.64 mi12:50:442:23:097:4125:27
8:11
+0:15
20M
20.00 mi13:01:572:34:227:4311:13
8:15
+0:04
21M
21.00 mi13:10:592:43:247:479:02
9:02
+0:47
35K
21.75 mi13:16:582:49:237:475:59
8:00
-1:02
23M
23.00 mi13:27:312:59:567:4910:33
8:26
+0:26
24M
24.00 mi13:35:423:08:077:508:11
8:11
-0:15
40K
24.85 mi13:43:003:15:257:527:18
8:32
+0:21
25.2M
25.20 mi13:46:103:18:357:533:10
9:11
+0:39
Finish
26.22 mi13:54:173:26:427:538:07
7:58
-1:13

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

7:28 /mi

Average Pace

7:53 /mi

Slowest Pace

9:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:38:28

48% of race

Time at Steady Pace

1:18:11

38% of race

Time at Slower Pace

30:03

15% of race

Average Pace: 7:53 /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 mi10:50:4823:137:2823:13
7:28
#9390
10K
6.21 mi11:14:0846:337:2923:20
7:31
#9940
15K
9.32 mi11:37:241:09:497:2923:16
7:29
#9947
20K
12.43 mi12:00:521:33:177:3023:28
7:33
#9882
Half
13.11 mi12:06:031:38:287:315:11
7:36
#9948
25K
15.53 mi12:25:171:57:427:3519:14
7:56
#10281
30K
18.64 mi12:50:442:23:097:4125:27
8:11
#10604
20M
20.00 mi13:01:572:34:227:4311:13
8:15
#10706
21M
21.00 mi13:10:592:43:247:479:02
9:02
#10857
35K
21.75 mi13:16:582:49:237:475:59
8:00
#10883
23M
23.00 mi13:27:312:59:567:4910:33
8:26
#10970
24M
24.00 mi13:35:423:08:077:508:11
8:11
#11049
40K
24.85 mi13:43:003:15:257:527:18
8:32
#11136
25.2M
25.20 mi13:46:103:18:357:533:10
9:11
#11175
Finish
26.22 mi13:54:173:26:427:538:07
7:58
#11193
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi93907807780710082(Top 38%)8191(Top 54%)8191(Top 399%)
10K6.21 mi3.10 mi9940-5508114-3078114-30710526(Top 40%)8444(Top 56%)8444(Top 412%)
15K9.32 mi3.11 mi9947-78131-178131-1710082(Top 38%)8191(Top 54%)8191(Top 399%)
20K12.43 mi3.11 mi9882+658082+498082+499725(Top 37%)7921(Top 52%)7921(Top 386%)
Half13.11 mi0.68 mi9948-668120-388120-3810958(Top 41%)8597(Top 57%)8597(Top 419%)
25K15.53 mi2.42 mi10281-3338281-1618281-16112140(Top 46%)8961(Top 59%)8961(Top 437%)
30K18.64 mi3.11 mi10604-3238381-1008381-10012277(Top 46%)8913(Top 59%)8913(Top 434%)
20M20.00 mi1.36 mi10706-1028406-258406-2512020(Top 45%)8710(Top 57%)8710(Top 424%)
21M21.00 mi1.00 mi10857-1518453-478453-4713573(Top 51%)9300(Top 61%)9300(Top 453%)
35K21.75 mi0.75 mi10883-268452+18452+112071(Top 45%)8580(Top 57%)8580(Top 418%)
23M23.00 mi1.25 mi10970-878475-238475-2312726(Top 48%)8784(Top 58%)8784(Top 428%)
24M24.00 mi1.00 mi11049-798482-78482-712459(Top 47%)8605(Top 57%)8605(Top 419%)
40K24.85 mi0.85 mi11136-878502-208502-2013553(Top 51%)9029(Top 59%)9029(Top 440%)
25.2M25.20 mi0.35 mi11175-398504-28504-213470(Top 51%)8963(Top 59%)8963(Top 437%)
Finish26.22 mi1.02 mi11193-188493+118493+1111833(Top 44%)8195(Top 54%)8195(Top 399%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21story building
+97ft-345ft

Overall

10082

Males

8191

M50-54

8191

5K→10K

3.1 - 6.2 mi

Top 40%
×5story building
+79ft-138ft

Overall

10526

Males

8444

M50-54

8444

10K→15K

6.2 - 9.3 mi

Top 38%
×3story building
+67ft-78ft

Overall

10082

Males

8191

M50-54

8191

15K→20K

9.3 - 12.4 mi

Top 37%
×5story building
+106ft-86ft

Overall

9725

Males

7921

M50-54

7921

20K→Half

12.4 - 13.1 mi

Top 41%
×2story building
+19ft-37ft

Overall

10958

Males

8597

M50-54

8597

Half→25K

13.1 - 15.5 mi

Top 46%
×4story building
+66ft-88ft

Overall

12140

Males

8961

M50-54

8961

25K→30K

15.5 - 18.6 mi

Top 46%
×9story building
+181ft-148ft

Overall

12277

Males

8913

M50-54

8913

30K→20M

18.6 - 20.0 mi

Top 45%
×5story building
+64ft-50ft

Overall

12020

Males

8710

M50-54

8710

20M→21M

20.0 - 21.0 mi

Top 51%
×8story building
+106ft-24ft

Overall

13573

Males

9300

M50-54

9300

21M→35K

21.0 - 21.8 mi

Top 45%
×7story building
+17ft-86ft

Overall

12071

Males

8580

M50-54

8580

35K→23M

21.8 - 23.0 mi

Top 48%
×5story building
+23ft-63ft

Overall

12726

Males

8784

M50-54

8784

23M→24M

23.0 - 24.0 mi

Top 47%
×6story building
+12ft-82ft

Overall

12459

Males

8605

M50-54

8605

24M→40K

24.0 - 24.9 mi

Top 51%
×1story
+6ft-20ft

Overall

13553

Males

9029

M50-54

9029

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

13470

Males

8963

M50-54

8963

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2story building
+22ft-21ft

Overall

11833

Males

8195

M50-54

8195

Passing Analysis

Category:
Athletes Passed
999*
Passed By
2800
Net Change
-1803
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9390
5K → 10K112662-550#9390#9940
10K → 15K180186-7#9940#9947
15K → 20K198*133+65#9947#9882
20K → Half1177-66#9882#9948
Half → 25K50382-333#9948#10281
25K → 30K88411-323#10281#10604
30K → 20M51*153-102#10604#10706
20M → 21M33184-151#10706#10857
21M → 35K3763-26#10857#10883
35K → 23M62149-87#10883#10970
23M → 24M48127-79#10970#11049
24M → 40K39126-87#11049#11136
40K → 25.2M2867-39#11136#11175
25.2M → Finish6280-18#11175#11193
TOTALS999*2800-1803

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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