Boston Marathon logo
BOSTON MARATHON 2023

Anders Gjerløv

Bib: 27960•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 (M50-54)
#0 / 2052
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
31:17
Rank: #23596
Start → 5K
10:04/mi
31:17 split
10K· 6.21 mi
1:00:52
Rank: #23152 (+444)
5K → 10K
9:31/mi
29:35 split
15K· 9.32 mi
1:31:20
Rank: #23149 (+3)
10K → 15K
9:48/mi
30:28 split
20K· 12.43 mi
2:01:53
Rank: #22965 (+184)
15K → 20K
9:50/mi
30:33 split
Half· 13.11 mi
2:09:21
Rank: #23093 (-128)
20K → Half
10:57/mi
7:28 split
25K· 15.53 mi
2:33:26
Rank: #22915 (+178)
Half → 25K
9:56/mi
24:05 split
30K· 18.64 mi
3:05:30
Rank: #22698 (+217)
25K → 30K
10:19/mi
32:04 split
20M
3:20:33
Rank: #22702 (-4)
30K → 20M
11:04/mi
15:03 split
21M
3:32:25
Rank: #22698 (+4)
20M → 21M
11:52/mi
11:52 split
35K· 21.75 mi
3:40:23
Rank: #22696 (+2)
21M → 35K
10:39/mi
7:58 split
23M
3:54:17
Rank: #22671 (+25)
35K → 23M
11:06/mi
13:54 split
24M
4:05:06
Rank: #22658 (+13)
23M → 24M
10:49/mi
10:49 split
40K· 24.85 mi
4:14:40
Rank: #22673 (-15)
24M → 40K
11:11/mi
9:34 split
25.2M
4:18:42
Rank: #22663 (+10)
40K → 25.2M
11:42/mi
4:02 split
Finish· 26.22 mi
4:29:31
Rank: #22698 (-35)
25.2M → Finish
10:37/mi
10:49 split

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
Time2:09:21
Pace9:52 /mi
2nd Half
Distance13.11 mi
Time2:20:10
Pace10:42 /mi
📊Positive Split: 8.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:4831:1710:0431:17
10:04
-
10K
6.21 mi12:18:231:00:529:4829:35
9:31
-0:33
15K
9.32 mi12:48:511:31:209:4830:28
9:48
+0:17
20K
12.43 mi13:19:242:01:539:4830:33
9:50
+0:02
Half
13.11 mi13:26:522:09:219:527:28
10:57
+1:07
25K
15.53 mi13:50:572:33:269:5324:05
9:56
-1:01
30K
18.64 mi14:23:013:05:309:5732:04
10:19
+0:23
20M
20.00 mi14:38:043:20:3310:0215:03
11:04
+0:45
21M
21.00 mi14:49:563:32:2510:0711:52
11:52
+0:48
35K
21.75 mi14:57:543:40:2310:087:58
10:39
-1:13
23M
23.00 mi15:11:483:54:1710:1113:54
11:06
+0:27
24M
24.00 mi15:22:374:05:0610:1310:49
10:49
-0:17
40K
24.85 mi15:32:114:14:4010:159:34
11:11
+0:22
25.2M
25.20 mi15:36:134:18:4210:164:02
11:42
+0:31
Finish
26.22 mi15:47:024:29:3110:1710:49
10:37
-1:05

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

9:31 /mi

Average Pace

10:17 /mi

Slowest Pace

11:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:25:58

54% of race

Time at Steady Pace

1:09:08

26% of race

Time at Slower Pace

54:25

20% of race

Average Pace: 10:17 /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 mi11:48:4831:1710:0431:17
10:04
#23596
10K
6.21 mi12:18:231:00:529:4829:35
9:31
#23152
15K
9.32 mi12:48:511:31:209:4830:28
9:48
#23149
20K
12.43 mi13:19:242:01:539:4830:33
9:50
#22965
Half
13.11 mi13:26:522:09:219:527:28
10:57
#23093
25K
15.53 mi13:50:572:33:269:5324:05
9:56
#22915
30K
18.64 mi14:23:013:05:309:5732:04
10:19
#22698
20M
20.00 mi14:38:043:20:3310:0215:03
11:04
#22702
21M
21.00 mi14:49:563:32:2510:0711:52
11:52
#22698
35K
21.75 mi14:57:543:40:2310:087:58
10:39
#22696
23M
23.00 mi15:11:483:54:1710:1113:54
11:06
#22671
24M
24.00 mi15:22:374:05:0610:1310:49
10:49
#22658
40K
24.85 mi15:32:114:14:4010:159:34
11:11
#22673
25.2M
25.20 mi15:36:134:18:4210:164:02
11:42
#22663
Finish
26.22 mi15:47:024:29:3110:1710:49
10:37
#22698
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi23596138761387623058(Top 87%)13659(Top 90%)13659(Top 666%)
10K6.21 mi3.10 mi23152+44413684+19213684+19222574(Top 85%)13428(Top 88%)13428(Top 654%)
15K9.32 mi3.11 mi23149+313698-1413698-1423058(Top 87%)13659(Top 90%)13659(Top 666%)
20K12.43 mi3.11 mi22965+18413617+8113617+8122480(Top 84%)13386(Top 88%)13386(Top 652%)
Half13.11 mi0.68 mi23093-12813671-5413671-5424854(Top 93%)14414(Top 95%)14414(Top 702%)
25K15.53 mi2.42 mi22915+17813579+9213579+9222068(Top 83%)13173(Top 87%)13173(Top 642%)
30K18.64 mi3.11 mi22698+21713444+13513444+13521823(Top 82%)13000(Top 86%)13000(Top 634%)
20M20.00 mi1.36 mi22702-413436+813436+822830(Top 86%)13387(Top 88%)13387(Top 652%)
21M21.00 mi1.00 mi22698+413429+713429+722518(Top 85%)13208(Top 87%)13208(Top 644%)
35K21.75 mi0.75 mi22696+213414+1513414+1522663(Top 85%)13239(Top 87%)13239(Top 645%)
23M23.00 mi1.25 mi22671+2513404+1013404+1022533(Top 85%)13167(Top 87%)13167(Top 642%)
24M24.00 mi1.00 mi22658+1313388+1613388+1622683(Top 85%)13199(Top 87%)13199(Top 643%)
40K24.85 mi0.85 mi22673-1513382+613382+622714(Top 85%)13183(Top 87%)13183(Top 642%)
25.2M25.20 mi0.35 mi22663+1013373+913373+921946(Top 82%)12823(Top 84%)12823(Top 625%)
Finish26.22 mi1.02 mi22698-3513387-1413387-1423233(Top 87%)13447(Top 89%)13447(Top 655%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21stories
+97ft-345ft

Overall

23058

Males

13659

M50-54

13659

5K→10K

3.1 - 6.2 mi

Top 85%
×5stories
+79ft-138ft

Overall

22574

Males

13428

M50-54

13428

10K→15K

6.2 - 9.3 mi

Top 87%
×3stories
+67ft-78ft

Overall

23058

Males

13659

M50-54

13659

15K→20K

9.3 - 12.4 mi

Top 84%
×5stories
+106ft-86ft

Overall

22480

Males

13386

M50-54

13386

20K→Half

12.4 - 13.1 mi

Top 93%
×2stories
+19ft-37ft

Overall

24854

Males

14414

M50-54

14414

Half→25K

13.1 - 15.5 mi

Top 83%
×4stories
+66ft-88ft

Overall

22068

Males

13173

M50-54

13173

25K→30K

15.5 - 18.6 mi

Top 82%
×9stories
+181ft-148ft

Overall

21823

Males

13000

M50-54

13000

30K→20M

18.6 - 20.0 mi

Top 86%
×5stories
+64ft-50ft

Overall

22830

Males

13387

M50-54

13387

20M→21M

20.0 - 21.0 mi

Top 85%
×8stories
+106ft-24ft

Overall

22518

Males

13208

M50-54

13208

21M→35K

21.0 - 21.8 mi

Top 85%
×7stories
+17ft-86ft

Overall

22663

Males

13239

M50-54

13239

35K→23M

21.8 - 23.0 mi

Top 85%
×5stories
+23ft-63ft

Overall

22533

Males

13167

M50-54

13167

23M→24M

23.0 - 24.0 mi

Top 85%
×6stories
+12ft-82ft

Overall

22683

Males

13199

M50-54

13199

24M→40K

24.0 - 24.9 mi

Top 85%
×1story
+6ft-20ft

Overall

22714

Males

13183

M50-54

13183

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

21946

Males

12823

M50-54

12823

25.2M→Finish

25.2 - 26.2 mi

Top 87%
×2stories
+22ft-21ft

Overall

23233

Males

13447

M50-54

13447

Passing Analysis

Category:
Athletes Passed
1649
Passed By
751
Net Change
+898
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23596
5K → 10K50662+444#23596#23152
10K → 15K142139+3#23152#23149
15K → 20K23652+184#23149#22965
20K → Half6134-128#22965#23093
Half → 25K19921+178#23093#22915
25K → 30K24629+217#22915#22698
30K → 20M5963-4#22698#22702
20M → 21M5349+4#22702#22698
21M → 35K2826+2#22698#22696
35K → 23M6338+25#22696#22671
23M → 24M4431+13#22671#22658
24M → 40K2439-15#22658#22673
40K → 25.2M199+10#22673#22663
25.2M → Finish2459-35#22663#22698
TOTALS1649751+898
📊

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