Boston Marathon logo
BOSTON MARATHON 2023

Tom Godfrey

Bib: 3825•M

NY

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 15%
Gender (Male)
#0 / 15176
Top 25%
Masters (Masters Men)
#0 / 9891
Top 12%
Division (M40-44)
#0 / 2241
Top 29%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:55
Rank: #3973
Start → 5K
20:55 | 6:44/mi
10K· 6.21 mi
41:41
Rank: #4075 (-102)
5K → 10K
20:46 | 6:41/mi
15K· 9.32 mi
1:02:55
Rank: #4522 (-447)
10K → 15K
21:14 | 6:50/mi
20K· 12.43 mi
1:24:08
Rank: #4557 (-35)
15K → 20K
21:13 | 6:50/mi
Half· 13.11 mi
1:28:47
Rank: #4589 (-32)
20K → Half
4:39 | 6:49/mi
25K· 15.53 mi
1:45:21
Rank: #4524 (+65)
Half → 25K
16:34 | 6:50/mi
30K· 18.64 mi
2:07:06
Rank: #4472 (+52)
25K → 30K
21:45 | 7:00/mi
20M
2:16:40
Rank: #4456 (+16)
30K → 20M
9:34 | 7:02/mi
21M
2:23:57
Rank: #4364 (+92)
20M → 21M
7:17 | 7:17/mi
35K· 21.75 mi
2:29:04
Rank: #4348 (+16)
21M → 35K
5:07 | 6:50/mi
23M
2:37:48
Rank: #4278 (+70)
35K → 23M
8:44 | 6:59/mi
24M
2:44:29
Rank: #4226 (+52)
23M → 24M
6:41 | 6:41/mi
40K· 24.85 mi
2:50:23
Rank: #4157 (+69)
24M → 40K
5:54 | 6:54/mi
25.2M
2:52:54
Rank: #4134 (+23)
40K → 25.2M
2:31 | 7:18/mi
Finish· 26.22 mi
2:59:28
Rank: #4018 (+116)
25.2M → Finish
6:34 | 6:27/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
Time1:28:47
Pace6:46 /mi
2nd Half
Distance13.11 mi
Time1:30:41
Pace6:55 /mi
📊Positive Split: 2.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:4120:556:4420:55
6:44
-
10K
6.21 mi10:43:2741:416:4220:46
6:41
-0:03
15K
9.32 mi11:04:411:02:556:4521:14
6:50
+0:09
20K
12.43 mi11:25:541:24:086:4621:13
6:50
0:00
Half
13.11 mi11:30:331:28:476:464:39
6:49
-0:01
25K
15.53 mi11:47:071:45:216:4716:34
6:50
+0:01
30K
18.64 mi12:08:522:07:066:4921:45
7:00
+0:10
20M
20.00 mi12:18:262:16:406:509:34
7:02
+0:02
21M
21.00 mi12:25:432:23:576:517:17
7:17
+0:15
35K
21.75 mi12:30:502:29:046:515:07
6:50
-0:27
23M
23.00 mi12:39:342:37:486:528:44
6:59
+0:09
24M
24.00 mi12:46:152:44:296:516:41
6:41
-0:18
40K
24.85 mi12:52:092:50:236:515:54
6:54
+0:13
25.2M
25.20 mi12:54:402:52:546:522:31
7:18
+0:24
Finish
26.22 mi13:01:142:59:286:516:34
6:27
-0:51

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

6:27 /mi

Average Pace

6:51 /mi

Slowest Pace

7:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:49:40

95% of race

Time at Steady Pace

9:48

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:51 /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 mi10:22:4120:556:4420:55
6:44
#3973
10K
6.21 mi10:43:2741:416:4220:46
6:41
#4075
15K
9.32 mi11:04:411:02:556:4521:14
6:50
#4522
20K
12.43 mi11:25:541:24:086:4621:13
6:50
#4557
Half
13.11 mi11:30:331:28:476:464:39
6:49
#4589
25K
15.53 mi11:47:071:45:216:4716:34
6:50
#4524
30K
18.64 mi12:08:522:07:066:4921:45
7:00
#4472
20M
20.00 mi12:18:262:16:406:509:34
7:02
#4456
21M
21.00 mi12:25:432:23:576:517:17
7:17
#4364
35K
21.75 mi12:30:502:29:046:515:07
6:50
#4348
23M
23.00 mi12:39:342:37:486:528:44
6:59
#4278
24M
24.00 mi12:46:152:44:296:516:41
6:41
#4226
40K
24.85 mi12:52:092:50:236:515:54
6:54
#4157
25.2M
25.20 mi12:54:402:52:546:522:31
7:18
#4134
Finish
26.22 mi13:01:142:59:286:516:34
6:27
#4018
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi3973372737275450(Top 20%)5019(Top 33%)5019(Top 224%)
10K6.21 mi3.10 mi4075-1023830-1033830-1034214(Top 16%)3947(Top 26%)3947(Top 176%)
15K9.32 mi3.11 mi4522-4474224-3944224-3945450(Top 20%)5019(Top 33%)5019(Top 224%)
20K12.43 mi3.11 mi4557-354255-314255-314742(Top 18%)4404(Top 29%)4404(Top 197%)
Half13.11 mi0.68 mi4589-324280-254280-255488(Top 21%)5048(Top 33%)5048(Top 225%)
25K15.53 mi2.42 mi4524+654227+534227+534470(Top 17%)4162(Top 27%)4162(Top 186%)
30K18.64 mi3.11 mi4472+524179+484179+484359(Top 16%)4047(Top 27%)4047(Top 181%)
20M20.00 mi1.36 mi4456+164159+204159+204300(Top 16%)3960(Top 26%)3960(Top 177%)
21M21.00 mi1.00 mi4364+924077+824077+823559(Top 13%)3302(Top 22%)3302(Top 147%)
35K21.75 mi0.75 mi4348+164060+174060+174511(Top 17%)4102(Top 27%)4102(Top 183%)
23M23.00 mi1.25 mi4278+704003+574003+573687(Top 14%)3402(Top 22%)3402(Top 152%)
24M24.00 mi1.00 mi4226+523956+473956+473064(Top 12%)2839(Top 19%)2839(Top 127%)
40K24.85 mi0.85 mi4157+693891+653891+653375(Top 13%)3076(Top 20%)3076(Top 137%)
25.2M25.20 mi0.35 mi4134+233869+223869+223052(Top 11%)2777(Top 18%)2777(Top 124%)
Finish26.22 mi1.02 mi4018+1163759+1103759+1102261(Top 8%)2089(Top 14%)2089(Top 93%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21stories
+97ft-345ft

Overall

5450

Males

5019

M40-44

5019

5K→10K

3.1 - 6.2 mi

Top 16%
×5stories
+79ft-138ft

Overall

4214

Males

3947

M40-44

3947

10K→15K

6.2 - 9.3 mi

Top 20%
×3stories
+67ft-78ft

Overall

5450

Males

5019

M40-44

5019

15K→20K

9.3 - 12.4 mi

Top 18%
×5stories
+106ft-86ft

Overall

4742

Males

4404

M40-44

4404

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5488

Males

5048

M40-44

5048

Half→25K

13.1 - 15.5 mi

Top 17%
×4stories
+66ft-88ft

Overall

4470

Males

4162

M40-44

4162

25K→30K

15.5 - 18.6 mi

Top 16%
×9stories
+181ft-148ft

Overall

4359

Males

4047

M40-44

4047

30K→20M

18.6 - 20.0 mi

Top 16%
×5stories
+64ft-50ft

Overall

4300

Males

3960

M40-44

3960

20M→21M

20.0 - 21.0 mi

Top 13%
×8stories
+106ft-24ft

Overall

3559

Males

3302

M40-44

3302

21M→35K

21.0 - 21.8 mi

Top 17%
×7stories
+17ft-86ft

Overall

4511

Males

4102

M40-44

4102

35K→23M

21.8 - 23.0 mi

Top 14%
×5stories
+23ft-63ft

Overall

3687

Males

3402

M40-44

3402

23M→24M

23.0 - 24.0 mi

Top 12%
×6stories
+12ft-82ft

Overall

3064

Males

2839

M40-44

2839

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3375

Males

3076

M40-44

3076

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

3052

Males

2777

M40-44

2777

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2stories
+22ft-21ft

Overall

2261

Males

2089

M40-44

2089

Passing Analysis

Category:
Athletes Passed
1239
Passed By
1284
Net Change
-45
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3973
5K → 10K179281-102#3973#4075
10K → 15K42489-447#4075#4522
15K → 20K89124-35#4522#4557
20K → Half1042-32#4557#4589
Half → 25K11752+65#4589#4524
25K → 30K152100+52#4524#4472
30K → 20M6751+16#4472#4456
20M → 21M11119+92#4456#4364
21M → 35K4933+16#4364#4348
35K → 23M10737+70#4348#4278
23M → 24M7523+52#4278#4226
24M → 40K8516+69#4226#4157
40K → 25.2M3411+23#4157#4134
25.2M → Finish1226+116#4134#4018
TOTALS12391284-45
📊

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