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BOSTON MARATHON 2023

Mark Schaeffer

Bib: 12070•M

AR

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M50-54)
#0 / 2052
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
8:57/mi
27:47
↑ 97↓ 3451.5%
10K· 6.21 mi
8:30/mi
54:12
↑ 79↓ 1380.4%
15K· 9.32 mi
8:24/mi
1:20:17
↑ 67↓ 78
20K· 12.43 mi
8:15/mi
1:45:55
↑ 106↓ 860.1%
Half· 13.11 mi
8:02/mi
1:51:24
↑ 19↓ 370.5%
25K· 15.53 mi
8:04/mi
2:10:58
↑ 66↓ 880.2%
30K· 18.64 mi
8:35/mi
2:37:39
↑ 181↓ 1480.2%
20M
9:24/mi
2:50:25
↑ 64↓ 500.2%
21M
9:36/mi
3:00:01
↑ 106↓ 241.6%
35K· 21.75 mi
8:28/mi
3:06:21
↑ 17↓ 861.7%
23M
9:22/mi
3:18:05
↑ 23↓ 630.6%
24M
9:00/mi
3:27:05
↓ 821.3%
40K· 24.85 mi
9:02/mi
3:34:48
↓ 200.3%
25.2M
10:32/mi
3:38:26
↑ 13↓ 160.2%
Finish· 26.22 mi
8:33/mi
3:47:09
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:24
Pace8:30 /mi
2nd Half
Distance13.11 mi
Time1:55:45
Pace8:50 /mi
📊Positive Split: 3.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:0027:478:5727:47
8:57
-
10K
6.21 mi11:50:2554:128:4326:25
8:30
-0:27
15K
9.32 mi12:16:301:20:178:3726:05
8:24
-0:06
20K
12.43 mi12:42:081:45:558:3125:38
8:15
-0:09
Half
13.11 mi12:47:371:51:248:305:29
8:02
-0:13
25K
15.53 mi13:07:112:10:588:2619:34
8:04
+0:02
30K
18.64 mi13:33:522:37:398:2726:41
8:35
+0:31
20M
20.00 mi13:46:382:50:258:3112:46
9:24
+0:49
21M
21.00 mi13:56:143:00:018:349:36
9:36
+0:12
35K
21.75 mi14:02:343:06:218:346:20
8:28
-1:08
23M
23.00 mi14:14:183:18:058:3711:44
9:22
+0:54
24M
24.00 mi14:23:183:27:058:389:00
9:00
-0:22
40K
24.85 mi14:31:013:34:488:397:43
9:02
+0:02
25.2M
25.20 mi14:34:393:38:268:403:38
10:32
+1:30
Finish
26.22 mi14:43:223:47:098:408:43
8:33
-1:59

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

8:02 /mi

Average Pace

8:40 /mi

Slowest Pace

10:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

50:41

22% of race

Time at Steady Pace

1:34:14

41% of race

Time at Slower Pace

1:22:14

36% of race

Average Pace: 8:40 /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 mi11:24:0027:478:5727:47
8:57
#20170
10K
6.21 mi11:50:2554:128:4326:25
8:30
#19241
15K
9.32 mi12:16:301:20:178:3726:05
8:24
#18554
20K
12.43 mi12:42:081:45:558:3125:38
8:15
#17708
Half
13.11 mi12:47:371:51:248:305:29
8:02
#17548
25K
15.53 mi13:07:112:10:588:2619:34
8:04
#16924
30K
18.64 mi13:33:522:37:398:2726:41
8:35
#16503
20M
20.00 mi13:46:382:50:258:3112:46
9:24
#16667
21M
21.00 mi13:56:143:00:018:349:36
9:36
#16634
35K
21.75 mi14:02:343:06:218:346:20
8:28
#16575
23M
23.00 mi14:14:183:18:058:3711:44
9:22
#16650
24M
24.00 mi14:23:183:27:058:389:00
9:00
#16676
40K
24.85 mi14:31:013:34:488:397:43
9:02
#16662
25.2M
25.20 mi14:34:393:38:268:403:38
10:32
#16704
Finish
26.22 mi14:43:223:47:098:408:43
8:33
#16652
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi20170122231222317105(Top 64%)11095(Top 73%)11095(Top 541%)
10K6.21 mi3.10 mi19241+92911917+30611917+30618257(Top 69%)11606(Top 76%)11606(Top 566%)
15K9.32 mi3.11 mi18554+68711684+23311684+23317105(Top 64%)11095(Top 73%)11095(Top 541%)
20K12.43 mi3.11 mi17708+84611337+34711337+34715268(Top 57%)10375(Top 68%)10375(Top 506%)
Half13.11 mi0.68 mi17548+16011277+6011277+6014658(Top 55%)10178(Top 67%)10178(Top 496%)
25K15.53 mi2.42 mi16924+62410999+27810999+27813304(Top 50%)9484(Top 62%)9484(Top 462%)
30K18.64 mi3.11 mi16503+42110796+20310796+20314850(Top 56%)9991(Top 66%)9991(Top 487%)
20M20.00 mi1.36 mi16667-16410855-5910855-5918427(Top 69%)11418(Top 75%)11418(Top 556%)
21M21.00 mi1.00 mi16634+3310832+2310832+2316402(Top 62%)10527(Top 69%)10527(Top 513%)
35K21.75 mi0.75 mi16575+5910795+3710795+3715091(Top 57%)9917(Top 65%)9917(Top 483%)
23M23.00 mi1.25 mi16650-7510808-1310808-1317800(Top 67%)11028(Top 73%)11028(Top 537%)
24M24.00 mi1.00 mi16676-2610807+110807+117208(Top 65%)10713(Top 71%)10713(Top 522%)
40K24.85 mi0.85 mi16662+1410781+2610781+2616254(Top 61%)10235(Top 67%)10235(Top 499%)
25.2M25.20 mi0.35 mi16704-4210790-910790-919168(Top 72%)11540(Top 76%)11540(Top 562%)
Finish26.22 mi1.02 mi16652+5210759+3110759+3115717(Top 59%)10046(Top 66%)10046(Top 490%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21story building
+97ft-345ft

Overall

17105

Males

11095

M50-54

11095

5K→10K

3.1 - 6.2 mi

Top 69%
×5story building
+79ft-138ft

Overall

18257

Males

11606

M50-54

11606

10K→15K

6.2 - 9.3 mi

Top 64%
×3story building
+67ft-78ft

Overall

17105

Males

11095

M50-54

11095

15K→20K

9.3 - 12.4 mi

Top 57%
×5story building
+106ft-86ft

Overall

15268

Males

10375

M50-54

10375

20K→Half

12.4 - 13.1 mi

Top 55%
×2story building
+19ft-37ft

Overall

14658

Males

10178

M50-54

10178

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

13304

Males

9484

M50-54

9484

25K→30K

15.5 - 18.6 mi

Top 56%
×9story building
+181ft-148ft

Overall

14850

Males

9991

M50-54

9991

30K→20M

18.6 - 20.0 mi

Top 69%
×5story building
+64ft-50ft

Overall

18427

Males

11418

M50-54

11418

20M→21M

20.0 - 21.0 mi

Top 62%
×8story building
+106ft-24ft

Overall

16402

Males

10527

M50-54

10527

21M→35K

21.0 - 21.8 mi

Top 57%
×7story building
+17ft-86ft

Overall

15091

Males

9917

M50-54

9917

35K→23M

21.8 - 23.0 mi

Top 67%
×5story building
+23ft-63ft

Overall

17800

Males

11028

M50-54

11028

23M→24M

23.0 - 24.0 mi

Top 65%
×6story building
+12ft-82ft

Overall

17208

Males

10713

M50-54

10713

24M→40K

24.0 - 24.9 mi

Top 61%
×1story
+6ft-20ft

Overall

16254

Males

10235

M50-54

10235

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

19168

Males

11540

M50-54

11540

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2story building
+22ft-21ft

Overall

15717

Males

10046

M50-54

10046

Passing Analysis

Category:
Athletes Passed
4299
Passed By
781
Net Change
+3518
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20170
5K → 10K101081+929#20170#19241
10K → 15K71023+687#19241#18554
15K → 20K8493+846#18554#17708
20K → Half1611+160#17708#17548
Half → 25K6262+624#17548#16924
25K → 30K43918+421#16924#16503
30K → 20M35199-164#16503#16667
20M → 21M10370+33#16667#16634
21M → 35K8021+59#16634#16575
35K → 23M60135-75#16575#16650
23M → 24M5783-26#16650#16676
24M → 40K6349+14#16676#16662
40K → 25.2M1557-42#16662#16704
25.2M → Finish9139+52#16704#16652
TOTALS4299781+3518
📊

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