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BOSTON MARATHON 2023

Matthew Mason

Bib: 11393•M

CO

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 35%
Gender (Male)
#0 / 15176
Top 50%
Masters (Masters Men)
#0 / 9891
Top 38%
Division (M45-49)
#0 / 2252
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
7:44/mi
24:02
↑ 97↓ 3451.5%
10K· 6.21 mi
7:30/mi
47:19
↑ 79↓ 1380.4%
15K· 9.32 mi
7:27/mi
1:10:28
↑ 67↓ 78
20K· 12.43 mi
7:27/mi
1:33:36
↑ 106↓ 860.1%
Half· 13.11 mi
7:24/mi
1:38:39
↑ 19↓ 370.5%
25K· 15.53 mi
7:46/mi
1:57:28
↑ 66↓ 880.2%
30K· 18.64 mi
7:49/mi
2:21:44
↑ 181↓ 1480.2%
20M
7:59/mi
2:32:35
↑ 64↓ 500.2%
21M
8:46/mi
2:41:21
↑ 106↓ 241.6%
35K· 21.75 mi
7:55/mi
2:47:16
↑ 17↓ 861.7%
23M
7:46/mi
2:57:00
↑ 23↓ 630.6%
24M
7:34/mi
3:04:34
↓ 821.3%
40K· 24.85 mi
7:38/mi
3:11:06
↓ 200.3%
25.2M
7:50/mi
3:13:48
↑ 13↓ 160.2%
Finish· 26.22 mi
6:30/mi
3:20:25
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:39
Pace7:31 /mi
2nd Half
Distance13.11 mi
Time1:41:46
Pace7:46 /mi
📊Positive Split: 3.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:4224:027:4424:02
7:44
-
10K
6.21 mi11:13:5947:197:3723:17
7:30
-0:14
15K
9.32 mi11:37:081:10:287:3423:09
7:27
-0:03
20K
12.43 mi12:00:161:33:367:3223:08
7:27
0:00
Half
13.11 mi12:05:191:38:397:315:03
7:24
-0:03
25K
15.53 mi12:24:081:57:287:3418:49
7:46
+0:22
30K
18.64 mi12:48:242:21:447:3624:16
7:49
+0:03
20M
20.00 mi12:59:152:32:357:3810:51
7:59
+0:10
21M
21.00 mi13:08:012:41:217:418:46
8:46
+0:47
35K
21.75 mi13:13:562:47:167:415:55
7:55
-0:51
23M
23.00 mi13:23:402:57:007:429:44
7:46
-0:09
24M
24.00 mi13:31:143:04:347:417:34
7:34
-0:12
40K
24.85 mi13:37:463:11:067:416:32
7:38
+0:04
25.2M
25.20 mi13:40:283:13:487:412:42
7:50
+0:12
Finish
26.22 mi13:47:053:20:257:396:37
6:30
-1:20

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

7:39 /mi

Slowest Pace

8:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:21:14

41% of race

Time at Steady Pace

1:39:34

50% of race

Time at Slower Pace

19:37

10% of race

Average Pace: 7:39 /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 mi10:50:4224:027:4424:02
7:44
#11755
10K
6.21 mi11:13:5947:197:3723:17
7:30
#11039
15K
9.32 mi11:37:081:10:287:3423:09
7:27
#10584
20K
12.43 mi12:00:161:33:367:3223:08
7:27
#10099
Half
13.11 mi12:05:191:38:397:315:03
7:24
#10045
25K
15.53 mi12:24:081:57:287:3418:49
7:46
#10155
30K
18.64 mi12:48:242:21:447:3624:16
7:49
#9994
20M
20.00 mi12:59:152:32:357:3810:51
7:59
#9970
21M
21.00 mi13:08:012:41:217:418:46
8:46
#10075
35K
21.75 mi13:13:562:47:167:415:55
7:55
#10123
23M
23.00 mi13:23:402:57:007:429:44
7:46
#9965
24M
24.00 mi13:31:143:04:347:417:34
7:34
#9853
40K
24.85 mi13:37:463:11:067:416:32
7:38
#9746
25.2M
25.20 mi13:40:283:13:487:412:42
7:50
#9637
Finish
26.22 mi13:47:053:20:257:396:37
6:30
#9308
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi11755901190119768(Top 37%)8016(Top 53%)8016(Top 356%)
10K6.21 mi3.10 mi11039+7168676+3358676+33510387(Top 39%)8376(Top 55%)8376(Top 372%)
15K9.32 mi3.11 mi10584+4558457+2198457+2199768(Top 37%)8016(Top 53%)8016(Top 356%)
20K12.43 mi3.11 mi10099+4858206+2518206+2518873(Top 33%)7426(Top 49%)7426(Top 330%)
Half13.11 mi0.68 mi10045+548176+308176+309408(Top 35%)7758(Top 51%)7758(Top 344%)
25K15.53 mi2.42 mi10155-1108212-368212-3610768(Top 40%)8375(Top 55%)8375(Top 372%)
30K18.64 mi3.11 mi9994+1618091+1218091+1219432(Top 35%)7518(Top 50%)7518(Top 334%)
20M20.00 mi1.36 mi9970+248051+408051+4010130(Top 38%)7818(Top 52%)7818(Top 347%)
21M21.00 mi1.00 mi10075-1058079-288079-2812034(Top 45%)8592(Top 57%)8592(Top 382%)
35K21.75 mi0.75 mi10123-488087-88087-811406(Top 43%)8296(Top 55%)8296(Top 368%)
23M23.00 mi1.25 mi9965+1587983+1047983+1048219(Top 31%)6537(Top 43%)6537(Top 290%)
24M24.00 mi1.00 mi9853+1127878+1057878+1058152(Top 31%)6408(Top 42%)6408(Top 285%)
40K24.85 mi0.85 mi9746+1077794+847794+847565(Top 28%)5977(Top 39%)5977(Top 265%)
25.2M25.20 mi0.35 mi9637+1097719+757719+755575(Top 21%)4674(Top 31%)4674(Top 208%)
Finish26.22 mi1.02 mi9308+3297513+2067513+2062477(Top 9%)2285(Top 15%)2285(Top 101%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 37%
×21story building
+97ft-345ft

Overall

9768

Males

8016

M45-49

8016

5K→10K

3.1 - 6.2 mi

Top 39%
×5story building
+79ft-138ft

Overall

10387

Males

8376

M45-49

8376

10K→15K

6.2 - 9.3 mi

Top 37%
×3story building
+67ft-78ft

Overall

9768

Males

8016

M45-49

8016

15K→20K

9.3 - 12.4 mi

Top 33%
×5story building
+106ft-86ft

Overall

8873

Males

7426

M45-49

7426

20K→Half

12.4 - 13.1 mi

Top 35%
×2story building
+19ft-37ft

Overall

9408

Males

7758

M45-49

7758

Half→25K

13.1 - 15.5 mi

Top 40%
×4story building
+66ft-88ft

Overall

10768

Males

8375

M45-49

8375

25K→30K

15.5 - 18.6 mi

Top 35%
×9story building
+181ft-148ft

Overall

9432

Males

7518

M45-49

7518

30K→20M

18.6 - 20.0 mi

Top 38%
×5story building
+64ft-50ft

Overall

10130

Males

7818

M45-49

7818

20M→21M

20.0 - 21.0 mi

Top 45%
×8story building
+106ft-24ft

Overall

12034

Males

8592

M45-49

8592

21M→35K

21.0 - 21.8 mi

Top 43%
×7story building
+17ft-86ft

Overall

11406

Males

8296

M45-49

8296

35K→23M

21.8 - 23.0 mi

Top 31%
×5story building
+23ft-63ft

Overall

8219

Males

6537

M45-49

6537

23M→24M

23.0 - 24.0 mi

Top 31%
×6story building
+12ft-82ft

Overall

8152

Males

6408

M45-49

6408

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7565

Males

5977

M45-49

5977

40K→25.2M

24.9 - 25.2 mi

Top 21%
×1story
+13ft-16ft

Overall

5575

Males

4674

M45-49

4674

25.2M→Finish

25.2 - 26.2 mi

Top 9%
×2story building
+22ft-21ft

Overall

2477

Males

2285

M45-49

2285

Passing Analysis

Category:
Athletes Passed
3230*
Passed By
781
Net Change
+2447
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11755
5K → 10K78973+716#11755#11039
10K → 15K49136+455#11039#10584
15K → 20K492*7+485#10584#10099
20K → Half65*11+54#10099#10045
Half → 25K92202-110#10045#10155
25K → 30K243*82+161#10155#9994
30K → 20M10278+24#9994#9970
20M → 21M55158-105#9970#10075
21M → 35K3381-48#10075#10123
35K → 23M168*10+158#10123#9965
23M → 24M13119+112#9965#9853
24M → 40K128*21+107#9853#9746
40K → 25.2M1123+109#9746#9637
25.2M → Finish3290+329#9637#9308
TOTALS3230*781+2447

* 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