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BOSTON MARATHON 2023

Ralph Mathiessen

Bib: 2609 M DE

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 12%
Gender (Male)
#0 / 15176
Top 21%
Division (M18-39)
#0 / 5285
Top 43%
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
6:26/mi
19:58
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
6:21/mi
39:41
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
6:20/mi
59:23
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
6:37/mi
1:19:57
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
6:24/mi
1:24:19
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
6:31/mi
1:40:06
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
6:54/mi
2:01:31
↑ 181↓ 1480.2%
138 ft elev
20M
7:05/mi
2:11:08
↑ 64↓ 500.2%
148 ft elev
21M
7:40/mi
2:18:48
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:10/mi
2:24:10
↑ 17↓ 861.7%
156 ft elev
23M
7:26/mi
2:33:28
↑ 23↓ 630.6%
116 ft elev
24M
7:08/mi
2:40:36
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:31/mi
2:47:02
↓ 200.3%
20 ft elev
25.2M
8:07/mi
2:49:50
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:26/mi
2:57:24
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:24:196:26 /mi⚡ faster
2nd Half
1:33:057:06 /mi+10.4%
Positive split — 10.4% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
19:586:263.11 mi19:58
6:26
-
10K
39:416:233.10 mi19:43
6:21
-0:05
15K
59:236:223.11 mi19:42
6:20
-0:01
20K
1:19:576:263.11 mi20:34
6:37
+0:17
Half(13.11 mi)
1:24:196:260.68 mi4:22
6:24
-0:13
25K
1:40:066:272.42 mi15:47
6:31
+0:07
30K
2:01:316:313.11 mi21:25
6:54
+0:23
20M
2:11:086:331.36 mi9:37
7:05
+0:11
21M
2:18:486:371.00 mi7:40
7:40
+0:35
35K
2:24:106:380.75 mi5:22
7:10
-0:30
23M
2:33:286:401.25 mi9:18
7:26
+0:16
24M
2:40:366:421.00 mi7:08
7:08
-0:18
40K
2:47:026:430.85 mi6:26
7:31
+0:23
25.2M
2:49:506:440.35 mi2:48
8:07
+0:36
Finish(26.22 mi)
2:57:246:461.02 mi7:34
7:26
-0:41
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

6:20 /mi

Average Pace

6:46 /mi

Slowest Pace

8:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

1:40:06

56% of race

Time at Steady Pace

43:32

25% of race

Time at Slower Pace

33:46

19% of race

Average Pace: 6:46 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi192518361836183717601760
10K3.10 mi1930-51847-111847-11197118881888
15K3.11 mi1881+491800+471800+47183717601760
20K3.11 mi2106-2252017-2172017-217298428422842
Half(13.11 mi)0.68 mi2105+12016+12016+1226321732173
25K2.42 mi2117-122031-152031-15222321332133
30K3.11 mi2318-2012223-1922223-192360533853385
20M1.36 mi2415-972312-892312-89444840894089
21M1.00 mi2538-1232429-1172429-117540947624762
35K0.75 mi2615-772500-712500-71629554235423
23M1.25 mi2806-1912677-1772677-177599451725172
24M1.00 mi2919-1132775-982775-98534246674667
40K0.85 mi3049-1302889-1142889-114681855165516
25.2M0.35 mi3117-682952-632952-63707755915591
Finish(26.22 mi)1.02 mi3302-1853122-1703122-170790760996099

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 7%
×21story building
+97ft-345ft

Overall

1837

Males

1760

M18-39

1760

5K→10K

3.1 - 6.2 mi

Top 7%
×5story building
+79ft-138ft

Overall

1971

Males

1888

M18-39

1888

10K→15K

6.2 - 9.3 mi

Top 7%
×3story building
+67ft-78ft

Overall

1837

Males

1760

M18-39

1760

15K→20K

9.3 - 12.4 mi

Top 11%
×5story building
+106ft-86ft

Overall

2984

Males

2842

M18-39

2842

20K→Half

12.4 - 13.1 mi

Top 9%
×2story building
+19ft-37ft

Overall

2263

Males

2173

M18-39

2173

Half→25K

13.1 - 15.5 mi

Top 8%
×4story building
+66ft-88ft

Overall

2223

Males

2133

M18-39

2133

25K→30K

15.5 - 18.6 mi

Top 14%
×9story building
+181ft-148ft

Overall

3605

Males

3385

M18-39

3385

30K→20M

18.6 - 20.0 mi

Top 17%
×5story building
+64ft-50ft

Overall

4448

Males

4089

M18-39

4089

20M→21M

20.0 - 21.0 mi

Top 20%
×8story building
+106ft-24ft

Overall

5409

Males

4762

M18-39

4762

21M→35K

21.0 - 21.8 mi

Top 24%
×7story building
+17ft-86ft

Overall

6295

Males

5423

M18-39

5423

35K→23M

21.8 - 23.0 mi

Top 23%
×5story building
+23ft-63ft

Overall

5994

Males

5172

M18-39

5172

23M→24M

23.0 - 24.0 mi

Top 20%
×6story building
+12ft-82ft

Overall

5342

Males

4667

M18-39

4667

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

6818

Males

5516

M18-39

5516

40K→25.2M

24.9 - 25.2 mi

Top 27%
×1story
+13ft-16ft

Overall

7077

Males

5591

M18-39

5591

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2story building
+22ft-21ft

Overall

7907

Males

6099

M18-39

6099

Passing Analysis

Category:
Passed
369
Passed By
1746
Net Change
-1377
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1925
5K → 10K98103-5#1925#1930
10K → 15K9243+49#1930#1881
15K → 20K19244-225#1881#2106
20K → Half1615+1#2106#2105
Half → 25K3547-12#2105#2117
25K → 30K20221-201#2117#2318
30K → 20M15112-97#2318#2415
20M → 21M10133-123#2415#2538
21M → 35K582-77#2538#2615
35K → 23M13204-191#2615#2806
23M → 24M13126-113#2806#2919
24M → 40K19149-130#2919#3049
40K → 25.2M573-68#3049#3117
25.2M → Finish9194-185#3117#3302
TOTALS3691746-1377

Passing Charts

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