Boston Marathon logo
BOSTON MARATHON 2023

Jens Godtfred Andersen

Bib: 27841•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M55-59)
#0 / 1422
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
30:20
Rank: #22815
Start → 5K
30:20 | 9:46/mi
10K· 6.21 mi
1:00:39
Rank: #23068 (-253)
5K → 10K
30:19 | 9:45/mi
15K· 9.32 mi
1:31:07
Rank: #23090 (-22)
10K → 15K
30:28 | 9:48/mi
20K· 12.43 mi
2:01:42
Rank: #22919 (+171)
15K → 20K
30:35 | 9:51/mi
Half· 13.11 mi
2:08:30
Rank: #22937 (-18)
20K → Half
6:48 | 9:58/mi
25K· 15.53 mi
2:33:40
Rank: #22936 (+1)
Half → 25K
25:10 | 10:23/mi
30K· 18.64 mi
3:07:26
Rank: #22919 (+17)
25K → 30K
33:46 | 10:52/mi
20M
3:22:52
Rank: #22965 (-46)
30K → 20M
15:26 | 11:21/mi
21M
3:34:50
Rank: #22947 (+18)
20M → 21M
11:58 | 11:58/mi
35K· 21.75 mi
3:43:10
Rank: #22964 (-17)
21M → 35K
8:20 | 11:08/mi
23M
3:57:26
Rank: #22960 (+4)
35K → 23M
14:16 | 11:24/mi
24M
4:08:38
Rank: #22984 (-24)
23M → 24M
11:12 | 11:12/mi
40K· 24.85 mi
4:18:28
Rank: #22976 (+8)
24M → 40K
9:50 | 11:30/mi
25.2M
4:22:49
Rank: #22997 (-21)
40K → 25.2M
4:21 | 12:37/mi
Finish· 26.22 mi
4:34:15
Rank: #23052 (-55)
25.2M → Finish
11:26 | 11:13/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:08:30
Pace9:48 /mi
2nd Half
Distance13.11 mi
Time2:25:45
Pace11:07 /mi
📊Positive Split: 13.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:0430:209:4630:20
9:46
-
10K
6.21 mi12:18:231:00:399:4630:19
9:45
-0:01
15K
9.32 mi12:48:511:31:079:4730:28
9:48
+0:03
20K
12.43 mi13:19:262:01:429:4830:35
9:51
+0:03
Half
13.11 mi13:26:142:08:309:486:48
9:58
+0:07
25K
15.53 mi13:51:242:33:409:5425:10
10:23
+0:25
30K
18.64 mi14:25:103:07:2610:0333:46
10:52
+0:29
20M
20.00 mi14:40:363:22:5210:0915:26
11:21
+0:29
21M
21.00 mi14:52:343:34:5010:1411:58
11:58
+0:37
35K
21.75 mi15:00:543:43:1010:168:20
11:08
-0:50
23M
23.00 mi15:15:103:57:2610:1914:16
11:24
+0:16
24M
24.00 mi15:26:224:08:3810:2211:12
11:12
-0:12
40K
24.85 mi15:36:124:18:2810:249:50
11:30
+0:18
25.2M
25.20 mi15:40:334:22:4910:264:21
12:37
+1:07
Finish
26.22 mi15:51:594:34:1510:2811:26
11:13
-1:24

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

9:45 /mi

Average Pace

10:28 /mi

Slowest Pace

12:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:33:40

56% of race

Time at Steady Pace

1:44:16

38% of race

Time at Slower Pace

16:19

6% of race

Average Pace: 10:28 /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 mi11:48:0430:209:4630:20
9:46
#22815
10K
6.21 mi12:18:231:00:399:4630:19
9:45
#23068
15K
9.32 mi12:48:511:31:079:4730:28
9:48
#23090
20K
12.43 mi13:19:262:01:429:4830:35
9:51
#22919
Half
13.11 mi13:26:142:08:309:486:48
9:58
#22937
25K
15.53 mi13:51:242:33:409:5425:10
10:23
#22936
30K
18.64 mi14:25:103:07:2610:0333:46
10:52
#22919
20M
20.00 mi14:40:363:22:5210:0915:26
11:21
#22965
21M
21.00 mi14:52:343:34:5010:1411:58
11:58
#22947
35K
21.75 mi15:00:543:43:1010:168:20
11:08
#22964
23M
23.00 mi15:15:103:57:2610:1914:16
11:24
#22960
24M
24.00 mi15:26:224:08:3810:2211:12
11:12
#22984
40K
24.85 mi15:36:124:18:2810:249:50
11:30
#22976
25.2M
25.20 mi15:40:334:22:4910:264:21
12:37
#22997
Finish
26.22 mi15:51:594:34:1510:2811:26
11:13
#23052
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi22815135091350923059(Top 87%)13660(Top 90%)13660(Top 961%)
10K6.21 mi3.10 mi23068-25313647-13813647-13823178(Top 87%)13724(Top 90%)13724(Top 965%)
15K9.32 mi3.11 mi23090-2213671-2413671-2423059(Top 87%)13660(Top 90%)13660(Top 961%)
20K12.43 mi3.11 mi22919+17113593+7813593+7822508(Top 85%)13401(Top 88%)13401(Top 942%)
Half13.11 mi0.68 mi22937-1813598-513598-523200(Top 87%)13711(Top 90%)13711(Top 964%)
25K15.53 mi2.42 mi22936+113590+813590+822966(Top 86%)13577(Top 89%)13577(Top 955%)
30K18.64 mi3.11 mi22919+1713560+3013560+3022901(Top 86%)13473(Top 89%)13473(Top 947%)
20M20.00 mi1.36 mi22965-4613564-413564-423273(Top 87%)13586(Top 90%)13586(Top 955%)
21M21.00 mi1.00 mi22947+1813541+2313541+2322702(Top 85%)13291(Top 88%)13291(Top 935%)
35K21.75 mi0.75 mi22964-1713549-813549-823540(Top 88%)13621(Top 90%)13621(Top 958%)
23M23.00 mi1.25 mi22960+413535+1413535+1423062(Top 87%)13422(Top 88%)13422(Top 944%)
24M24.00 mi1.00 mi22984-2413534+113534+123402(Top 88%)13532(Top 89%)13532(Top 952%)
40K24.85 mi0.85 mi22976+813522+1213522+1223201(Top 87%)13413(Top 88%)13413(Top 943%)
25.2M25.20 mi0.35 mi22997-2113535-1313535-1323436(Top 88%)13516(Top 89%)13516(Top 950%)
Finish26.22 mi1.02 mi23052-5513559-2413559-2424315(Top 91%)13981(Top 92%)13981(Top 983%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21stories
+97ft-345ft

Overall

23059

Males

13660

M55-59

13660

5K→10K

3.1 - 6.2 mi

Top 87%
×5stories
+79ft-138ft

Overall

23178

Males

13724

M55-59

13724

10K→15K

6.2 - 9.3 mi

Top 87%
×3stories
+67ft-78ft

Overall

23059

Males

13660

M55-59

13660

15K→20K

9.3 - 12.4 mi

Top 85%
×5stories
+106ft-86ft

Overall

22508

Males

13401

M55-59

13401

20K→Half

12.4 - 13.1 mi

Top 87%
×2stories
+19ft-37ft

Overall

23200

Males

13711

M55-59

13711

Half→25K

13.1 - 15.5 mi

Top 86%
×4stories
+66ft-88ft

Overall

22966

Males

13577

M55-59

13577

25K→30K

15.5 - 18.6 mi

Top 86%
×9stories
+181ft-148ft

Overall

22901

Males

13473

M55-59

13473

30K→20M

18.6 - 20.0 mi

Top 87%
×5stories
+64ft-50ft

Overall

23273

Males

13586

M55-59

13586

20M→21M

20.0 - 21.0 mi

Top 85%
×8stories
+106ft-24ft

Overall

22702

Males

13291

M55-59

13291

21M→35K

21.0 - 21.8 mi

Top 88%
×7stories
+17ft-86ft

Overall

23540

Males

13621

M55-59

13621

35K→23M

21.8 - 23.0 mi

Top 87%
×5stories
+23ft-63ft

Overall

23062

Males

13422

M55-59

13422

23M→24M

23.0 - 24.0 mi

Top 88%
×6stories
+12ft-82ft

Overall

23402

Males

13532

M55-59

13532

24M→40K

24.0 - 24.9 mi

Top 87%
×1story
+6ft-20ft

Overall

23201

Males

13413

M55-59

13413

40K→25.2M

24.9 - 25.2 mi

Top 88%
×1story
+13ft-16ft

Overall

23436

Males

13516

M55-59

13516

25.2M→Finish

25.2 - 26.2 mi

Top 91%
×2stories
+22ft-21ft

Overall

24315

Males

13981

M55-59

13981

Passing Analysis

Category:
Athletes Passed
1012
Passed By
1249
Net Change
-237
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22815
5K → 10K129382-253#22815#23068
10K → 15K131153-22#23068#23090
15K → 20K22352+171#23090#22919
20K → Half2139-18#22919#22937
Half → 25K9594+1#22937#22936
25K → 30K124107+17#22936#22919
30K → 20M5197-46#22919#22965
20M → 21M5638+18#22965#22947
21M → 35K2845-17#22947#22964
35K → 23M4844+4#22964#22960
23M → 24M3761-24#22960#22984
24M → 40K3931+8#22984#22976
40K → 25.2M627-21#22976#22997
25.2M → Finish2479-55#22997#23052
TOTALS10121249-237
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing