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BOSTON MARATHON 2023

Stefan Andersson

Bib: 27568•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
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
8:44/mi
27:09
↑ 97↓ 3451.5%
10K· 6.21 mi
8:09/mi
52:27
↑ 79↓ 1380.4%
15K· 9.32 mi
8:07/mi
1:17:40
↑ 67↓ 78
20K· 12.43 mi
8:24/mi
1:43:45
↑ 106↓ 860.1%
Half· 13.11 mi
8:07/mi
1:49:17
↑ 19↓ 370.5%
25K· 15.53 mi
8:17/mi
2:09:23
↑ 66↓ 880.2%
30K· 18.64 mi
8:37/mi
2:36:10
↑ 181↓ 1480.2%
20M
8:38/mi
2:47:54
↑ 64↓ 500.2%
21M
9:03/mi
2:56:57
↑ 106↓ 241.6%
35K· 21.75 mi
8:39/mi
3:03:25
↑ 17↓ 861.7%
23M
8:46/mi
3:14:23
↑ 23↓ 630.6%
24M
8:37/mi
3:23:00
↓ 821.3%
40K· 24.85 mi
8:44/mi
3:30:28
↓ 200.3%
25.2M
9:23/mi
3:33:42
↑ 13↓ 160.2%
Finish· 26.22 mi
8:43/mi
3:42:35
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:17
Pace8:20 /mi
2nd Half
Distance13.11 mi
Time1:53:18
Pace8:39 /mi
📊Positive Split: 3.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:3127:098:4427:09
8:44
-
10K
6.21 mi12:09:4952:278:2625:18
8:09
-0:35
15K
9.32 mi12:35:021:17:408:2025:13
8:07
-0:02
20K
12.43 mi13:01:071:43:458:2126:05
8:24
+0:17
Half
13.11 mi13:06:391:49:178:205:32
8:07
-0:17
25K
15.53 mi13:26:452:09:238:2020:06
8:17
+0:10
30K
18.64 mi13:53:322:36:108:2326:47
8:37
+0:20
20M
20.00 mi14:05:162:47:548:2411:44
8:38
+0:01
21M
21.00 mi14:14:192:56:578:269:03
9:03
+0:25
35K
21.75 mi14:20:473:03:258:266:28
8:39
-0:24
23M
23.00 mi14:31:453:14:238:2710:58
8:46
+0:07
24M
24.00 mi14:40:223:23:008:288:37
8:37
-0:09
40K
24.85 mi14:47:503:30:288:287:28
8:44
+0:07
25.2M
25.20 mi14:51:043:33:428:293:14
9:23
+0:39
Finish
26.22 mi14:59:573:42:358:308:53
8:43
-0:40

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

8:07 /mi

Average Pace

8:30 /mi

Slowest Pace

9:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:30:18

94% of race

Time at Steady Pace

12:17

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:29 /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 mi11:44:3127:098:4427:09
8:44
#19114
10K
6.21 mi12:09:4952:278:2625:18
8:09
#17470
15K
9.32 mi12:35:021:17:408:2025:13
8:07
#16737
20K
12.43 mi13:01:071:43:458:2126:05
8:24
#16616
Half
13.11 mi13:06:391:49:178:205:32
8:07
#16541
25K
15.53 mi13:26:452:09:238:2020:06
8:17
#16250
30K
18.64 mi13:53:322:36:108:2326:47
8:37
#15997
20M
20.00 mi14:05:162:47:548:2411:44
8:38
#15862
21M
21.00 mi14:14:192:56:578:269:03
9:03
#15703
35K
21.75 mi14:20:473:03:258:266:28
8:39
#15707
23M
23.00 mi14:31:453:14:238:2710:58
8:46
#15628
24M
24.00 mi14:40:223:23:008:288:37
8:37
#15590
40K
24.85 mi14:47:503:30:288:287:28
8:44
#15567
25.2M
25.20 mi14:51:043:33:428:293:14
9:23
#15562
Finish
26.22 mi14:59:573:42:358:308:53
8:43
#15588
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi19114118201182015271(Top 57%)10415(Top 69%)10415(Top 462%)
10K6.21 mi3.10 mi17470+164411239+58111239+58115829(Top 59%)10644(Top 70%)10644(Top 473%)
15K9.32 mi3.11 mi16737+73310962+27710962+27715271(Top 57%)10415(Top 69%)10415(Top 462%)
20K12.43 mi3.11 mi16616+12110911+5110911+5116206(Top 61%)10716(Top 71%)10716(Top 476%)
Half13.11 mi0.68 mi16541+7510881+3010881+3015175(Top 57%)10368(Top 68%)10368(Top 460%)
25K15.53 mi2.42 mi16250+29110746+13510746+13514881(Top 56%)10111(Top 67%)10111(Top 449%)
30K18.64 mi3.11 mi15997+25310603+14310603+14315035(Top 56%)10068(Top 66%)10068(Top 447%)
20M20.00 mi1.36 mi15862+13510522+8110522+8114473(Top 54%)9768(Top 64%)9768(Top 434%)
21M21.00 mi1.00 mi15703+15910436+8610436+8613673(Top 51%)9352(Top 62%)9352(Top 415%)
35K21.75 mi0.75 mi15707-410427+910427+916064(Top 60%)10314(Top 68%)10314(Top 458%)
23M23.00 mi1.25 mi15628+7910365+6210365+6214744(Top 55%)9695(Top 64%)9695(Top 431%)
24M24.00 mi1.00 mi15590+3810333+3210333+3215142(Top 57%)9814(Top 65%)9814(Top 436%)
40K24.85 mi0.85 mi15567+2310320+1310320+1314689(Top 55%)9539(Top 63%)9539(Top 424%)
25.2M25.20 mi0.35 mi15562+510315+510315+514522(Top 55%)9478(Top 62%)9478(Top 421%)
Finish26.22 mi1.02 mi15588-2610311+410311+416554(Top 62%)10406(Top 69%)10406(Top 462%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21story building
+97ft-345ft

Overall

15271

Males

10415

M45-49

10415

5K→10K

3.1 - 6.2 mi

Top 59%
×5story building
+79ft-138ft

Overall

15829

Males

10644

M45-49

10644

10K→15K

6.2 - 9.3 mi

Top 57%
×3story building
+67ft-78ft

Overall

15271

Males

10415

M45-49

10415

15K→20K

9.3 - 12.4 mi

Top 61%
×5story building
+106ft-86ft

Overall

16206

Males

10716

M45-49

10716

20K→Half

12.4 - 13.1 mi

Top 57%
×2story building
+19ft-37ft

Overall

15175

Males

10368

M45-49

10368

Half→25K

13.1 - 15.5 mi

Top 56%
×4story building
+66ft-88ft

Overall

14881

Males

10111

M45-49

10111

25K→30K

15.5 - 18.6 mi

Top 56%
×9story building
+181ft-148ft

Overall

15035

Males

10068

M45-49

10068

30K→20M

18.6 - 20.0 mi

Top 54%
×5story building
+64ft-50ft

Overall

14473

Males

9768

M45-49

9768

20M→21M

20.0 - 21.0 mi

Top 51%
×8story building
+106ft-24ft

Overall

13673

Males

9352

M45-49

9352

21M→35K

21.0 - 21.8 mi

Top 60%
×7story building
+17ft-86ft

Overall

16064

Males

10314

M45-49

10314

35K→23M

21.8 - 23.0 mi

Top 55%
×5story building
+23ft-63ft

Overall

14744

Males

9695

M45-49

9695

23M→24M

23.0 - 24.0 mi

Top 57%
×6story building
+12ft-82ft

Overall

15142

Males

9814

M45-49

9814

24M→40K

24.0 - 24.9 mi

Top 55%
×1story
+6ft-20ft

Overall

14689

Males

9539

M45-49

9539

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

14522

Males

9478

M45-49

9478

25.2M→Finish

25.2 - 26.2 mi

Top 62%
×2story building
+22ft-21ft

Overall

16554

Males

10406

M45-49

10406

Passing Analysis

Category:
Athletes Passed
4138
Passed By
612
Net Change
+3526
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19114
5K → 10K168945+1644#19114#17470
10K → 15K75825+733#17470#16737
15K → 20K234113+121#16737#16616
20K → Half8510+75#16616#16541
Half → 25K31625+291#16541#16250
25K → 30K31259+253#16250#15997
30K → 20M16732+135#15997#15862
20M → 21M18122+159#15862#15703
21M → 35K4347-4#15703#15707
35K → 23M11435+79#15707#15628
23M → 24M7941+38#15628#15590
24M → 40K7249+23#15590#15567
40K → 25.2M3227+5#15567#15562
25.2M → Finish5682-26#15562#15588
TOTALS4138612+3526
📊

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