Boston Marathon logo
BOSTON MARATHON 2023

Nigel Mcgregor

Bib: 4747•M

NY

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 14%
Gender (Male)
#0 / 15176
Top 24%
Masters (Masters Men)
#0 / 9891
Top 11%
Division (M40-44)
#0 / 2241
Top 27%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:03
Rank: #4410
Start → 5K
21:03 | 6:47/mi
10K· 6.21 mi
41:07
Rank: #3286 (+1124)
5K → 10K
20:04 | 6:28/mi
15K· 9.32 mi
1:01:40
Rank: #3319 (-33)
10K → 15K
20:33 | 6:37/mi
20K· 12.43 mi
1:22:29
Rank: #3354 (-35)
15K → 20K
20:49 | 6:42/mi
Half· 13.11 mi
1:27:03
Rank: #3394 (-40)
20K → Half
4:34 | 6:42/mi
25K· 15.53 mi
1:43:40
Rank: #3542 (-148)
Half → 25K
16:37 | 6:51/mi
30K· 18.64 mi
2:05:28
Rank: #3694 (-152)
25K → 30K
21:48 | 7:01/mi
20M
2:14:57
Rank: #3674 (+20)
30K → 20M
9:29 | 6:59/mi
21M
2:22:29
Rank: #3736 (-62)
20M → 21M
7:32 | 7:32/mi
35K· 21.75 mi
2:27:29
Rank: #3705 (+31)
21M → 35K
5:00 | 6:41/mi
23M
2:36:25
Rank: #3763 (-58)
35K → 23M
8:56 | 7:08/mi
24M
2:43:13
Rank: #3737 (+26)
23M → 24M
6:48 | 6:48/mi
40K· 24.85 mi
2:49:21
Rank: #3783 (-46)
24M → 40K
6:08 | 7:10/mi
25.2M
2:51:56
Rank: #3781 (+2)
40K → 25.2M
2:35 | 7:29/mi
Finish· 26.22 mi
2:58:54
Rank: #3817 (-36)
25.2M → Finish
6:58 | 6:50/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
Time1:27:03
Pace6:38 /mi
2nd Half
Distance13.11 mi
Time1:31:51
Pace7:00 /mi
📊Positive Split: 5.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:5921:036:4721:03
6:47
-
10K
6.21 mi10:43:0341:076:3720:04
6:28
-0:19
15K
9.32 mi11:03:361:01:406:3720:33
6:37
+0:09
20K
12.43 mi11:24:251:22:296:3820:49
6:42
+0:05
Half
13.11 mi11:28:591:27:036:384:34
6:42
0:00
25K
15.53 mi11:45:361:43:406:4016:37
6:51
+0:09
30K
18.64 mi12:07:242:05:286:4421:48
7:01
+0:10
20M
20.00 mi12:16:532:14:576:459:29
6:59
-0:02
21M
21.00 mi12:24:252:22:296:477:32
7:32
+0:33
35K
21.75 mi12:29:252:27:296:475:00
6:41
-0:51
23M
23.00 mi12:38:212:36:256:488:56
7:08
+0:27
24M
24.00 mi12:45:092:43:136:486:48
6:48
-0:20
40K
24.85 mi12:51:172:49:216:496:08
7:10
+0:22
25.2M
25.20 mi12:53:522:51:566:492:35
7:29
+0:19
Finish
26.22 mi13:00:502:58:546:506:58
6:50
-0:39

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

6:28 /mi

Average Pace

6:50 /mi

Slowest Pace

7:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:33:43

86% of race

Time at Steady Pace

25:11

14% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:49 /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 mi10:22:5921:036:4721:03
6:47
#4410
10K
6.21 mi10:43:0341:076:3720:04
6:28
#3286
15K
9.32 mi11:03:361:01:406:3720:33
6:37
#3319
20K
12.43 mi11:24:251:22:296:3820:49
6:42
#3354
Half
13.11 mi11:28:591:27:036:384:34
6:42
#3394
25K
15.53 mi11:45:361:43:406:4016:37
6:51
#3542
30K
18.64 mi12:07:242:05:286:4421:48
7:01
#3694
20M
20.00 mi12:16:532:14:576:459:29
6:59
#3674
21M
21.00 mi12:24:252:22:296:477:32
7:32
#3736
35K
21.75 mi12:29:252:27:296:475:00
6:41
#3705
23M
23.00 mi12:38:212:36:256:488:56
7:08
#3763
24M
24.00 mi12:45:092:43:136:486:48
6:48
#3737
40K
24.85 mi12:51:172:49:216:496:08
7:10
#3783
25.2M
25.20 mi12:53:522:51:566:492:35
7:29
#3781
Finish
26.22 mi13:00:502:58:546:506:58
6:50
#3817
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4410411841183415(Top 13%)3240(Top 21%)3240(Top 145%)
10K6.21 mi3.10 mi3286+11243115+10033115+10032561(Top 10%)2448(Top 16%)2448(Top 109%)
15K9.32 mi3.11 mi3319-333152-373152-373415(Top 13%)3240(Top 21%)3240(Top 145%)
20K12.43 mi3.11 mi3354-353184-323184-323588(Top 13%)3395(Top 22%)3395(Top 151%)
Half13.11 mi0.68 mi3394-403222-383222-384237(Top 16%)3961(Top 26%)3961(Top 177%)
25K15.53 mi2.42 mi3542-1483359-1373359-1374595(Top 17%)4274(Top 28%)4274(Top 191%)
30K18.64 mi3.11 mi3694-1523490-1313490-1314445(Top 17%)4122(Top 27%)4122(Top 184%)
20M20.00 mi1.36 mi3674+203470+203470+203895(Top 15%)3623(Top 24%)3623(Top 162%)
21M21.00 mi1.00 mi3736-623524-543524-544723(Top 18%)4264(Top 28%)4264(Top 190%)
35K21.75 mi0.75 mi3705+313496+283496+283471(Top 13%)3223(Top 21%)3223(Top 144%)
23M23.00 mi1.25 mi3763-583544-483544-484460(Top 17%)4046(Top 27%)4046(Top 181%)
24M24.00 mi1.00 mi3737+263516+283516+283649(Top 14%)3348(Top 22%)3348(Top 149%)
40K24.85 mi0.85 mi3783-463555-393555-394715(Top 18%)4142(Top 27%)4142(Top 185%)
25.2M25.20 mi0.35 mi3781+23554+13554+13823(Top 14%)3413(Top 22%)3413(Top 152%)
Finish26.22 mi1.02 mi3817-363583-293583-294265(Top 16%)3741(Top 25%)3741(Top 167%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 13%
×21stories
+97ft-345ft

Overall

3415

Males

3240

M40-44

3240

5K→10K

3.1 - 6.2 mi

Top 10%
×5stories
+79ft-138ft

Overall

2561

Males

2448

M40-44

2448

10K→15K

6.2 - 9.3 mi

Top 13%
×3stories
+67ft-78ft

Overall

3415

Males

3240

M40-44

3240

15K→20K

9.3 - 12.4 mi

Top 13%
×5stories
+106ft-86ft

Overall

3588

Males

3395

M40-44

3395

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4237

Males

3961

M40-44

3961

Half→25K

13.1 - 15.5 mi

Top 17%
×4stories
+66ft-88ft

Overall

4595

Males

4274

M40-44

4274

25K→30K

15.5 - 18.6 mi

Top 17%
×9stories
+181ft-148ft

Overall

4445

Males

4122

M40-44

4122

30K→20M

18.6 - 20.0 mi

Top 15%
×5stories
+64ft-50ft

Overall

3895

Males

3623

M40-44

3623

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

4723

Males

4264

M40-44

4264

21M→35K

21.0 - 21.8 mi

Top 13%
×7stories
+17ft-86ft

Overall

3471

Males

3223

M40-44

3223

35K→23M

21.8 - 23.0 mi

Top 17%
×5stories
+23ft-63ft

Overall

4460

Males

4046

M40-44

4046

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

3649

Males

3348

M40-44

3348

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

4715

Males

4142

M40-44

4142

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3823

Males

3413

M40-44

3413

25.2M→Finish

25.2 - 26.2 mi

Top 16%
×2stories
+22ft-21ft

Overall

4265

Males

3741

M40-44

3741

Passing Analysis

Category:
Athletes Passed
1727
Passed By
1134
Net Change
+593
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4410
5K → 10K11328+1124#4410#3286
10K → 15K79112-33#3286#3319
15K → 20K73108-35#3319#3354
20K → Half242-40#3354#3394
Half → 25K37185-148#3394#3542
25K → 30K53205-152#3542#3694
30K → 20M6646+20#3694#3674
20M → 21M39101-62#3674#3736
21M → 35K4514+31#3736#3705
35K → 23M46104-58#3705#3763
23M → 24M5630+26#3763#3737
24M → 40K4389-46#3737#3783
40K → 25.2M2220+2#3783#3781
25.2M → Finish3470-36#3781#3817
TOTALS17271134+593
📊

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