Boston Marathon logo
BOSTON MARATHON 2023

Nathaniel Lind

Bib: 8948•M

TX

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 27%
Gender (Male)
#0 / 15176
Top 41%
Masters (Masters Men)
#0 / 9891
Top 28%
Division (M40-44)
#0 / 2241
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:39
Rank: #10624
Start → 5K
23:39 | 7:37/mi
10K· 6.21 mi
46:03
Rank: #9251 (+1373)
5K → 10K
22:24 | 7:13/mi
15K· 9.32 mi
1:08:33
Rank: #8864 (+387)
10K → 15K
22:30 | 7:15/mi
20K· 12.43 mi
1:31:17
Rank: #8593 (+271)
15K → 20K
22:44 | 7:19/mi
Half· 13.11 mi
1:36:16
Rank: #8589 (+4)
20K → Half
4:59 | 7:18/mi
25K· 15.53 mi
1:54:15
Rank: #8470 (+119)
Half → 25K
17:59 | 7:25/mi
30K· 18.64 mi
2:17:27
Rank: #8176 (+294)
25K → 30K
23:12 | 7:28/mi
20M
2:27:46
Rank: #8081 (+95)
30K → 20M
10:19 | 7:36/mi
21M
2:35:32
Rank: #7912 (+169)
20M → 21M
7:46 | 7:46/mi
35K· 21.75 mi
2:40:53
Rank: #7826 (+86)
21M → 35K
5:21 | 7:09/mi
23M
2:50:06
Rank: #7654 (+172)
35K → 23M
9:13 | 7:22/mi
24M
2:57:17
Rank: #7525 (+129)
23M → 24M
7:11 | 7:11/mi
40K· 24.85 mi
3:03:32
Rank: #7423 (+102)
24M → 40K
6:15 | 7:19/mi
25.2M
3:06:12
Rank: #7378 (+45)
40K → 25.2M
2:40 | 7:44/mi
Finish· 26.22 mi
3:13:14
Rank: #7219 (+159)
25.2M → Finish
7:02 | 6:54/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 Half⚖️ Balanced
Distance13.11 mi
Time1:36:16
Pace7:21 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:36:58
Pace7:24 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:1923:397:3723:39
7:37
-
10K
6.21 mi11:12:4346:037:2522:24
7:13
-0:24
15K
9.32 mi11:35:131:08:337:2122:30
7:15
+0:02
20K
12.43 mi11:57:571:31:177:2122:44
7:19
+0:04
Half
13.11 mi12:02:561:36:167:214:59
7:18
-0:01
25K
15.53 mi12:20:551:54:157:2117:59
7:25
+0:07
30K
18.64 mi12:44:072:17:277:2223:12
7:28
+0:03
20M
20.00 mi12:54:262:27:467:2310:19
7:36
+0:08
21M
21.00 mi13:02:122:35:327:247:46
7:46
+0:10
35K
21.75 mi13:07:332:40:537:245:21
7:09
-0:37
23M
23.00 mi13:16:462:50:067:249:13
7:22
+0:13
24M
24.00 mi13:23:572:57:177:237:11
7:11
-0:11
40K
24.85 mi13:30:123:03:327:236:15
7:19
+0:08
25.2M
25.20 mi13:32:523:06:127:232:40
7:44
+0:25
Finish
26.22 mi13:39:543:13:147:237:02
6:54
-0:50

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

6:54 /mi

Average Pace

7:23 /mi

Slowest Pace

7:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:28:50

77% of race

Time at Steady Pace

44:24

23% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:22 /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 mi10:50:1923:397:3723:39
7:37
#10624
10K
6.21 mi11:12:4346:037:2522:24
7:13
#9251
15K
9.32 mi11:35:131:08:337:2122:30
7:15
#8864
20K
12.43 mi11:57:571:31:177:2122:44
7:19
#8593
Half
13.11 mi12:02:561:36:167:214:59
7:18
#8589
25K
15.53 mi12:20:551:54:157:2117:59
7:25
#8470
30K
18.64 mi12:44:072:17:277:2223:12
7:28
#8176
20M
20.00 mi12:54:262:27:467:2310:19
7:36
#8081
21M
21.00 mi13:02:122:35:327:247:46
7:46
#7912
35K
21.75 mi13:07:332:40:537:245:21
7:09
#7826
23M
23.00 mi13:16:462:50:067:249:13
7:22
#7654
24M
24.00 mi13:23:572:57:177:237:11
7:11
#7525
40K
24.85 mi13:30:123:03:327:236:15
7:19
#7423
25.2M
25.20 mi13:32:523:06:127:232:40
7:44
#7378
Finish
26.22 mi13:39:543:13:147:237:02
6:54
#7219
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi10624845784578088(Top 30%)6975(Top 46%)6975(Top 311%)
10K6.21 mi3.10 mi9251+13737722+7357722+7358155(Top 31%)7045(Top 46%)7045(Top 314%)
15K9.32 mi3.11 mi8864+3877480+2427480+2428088(Top 30%)6975(Top 46%)6975(Top 311%)
20K12.43 mi3.11 mi8593+2717308+1727308+1727902(Top 30%)6820(Top 45%)6820(Top 304%)
Half13.11 mi0.68 mi8589+4730873088562(Top 32%)7226(Top 48%)7226(Top 322%)
25K15.53 mi2.42 mi8470+1197213+957213+958139(Top 31%)6890(Top 45%)6890(Top 307%)
30K18.64 mi3.11 mi8176+2946982+2316982+2317002(Top 26%)6067(Top 40%)6067(Top 271%)
20M20.00 mi1.36 mi8081+956908+746908+747417(Top 28%)6222(Top 41%)6222(Top 278%)
21M21.00 mi1.00 mi7912+1696791+1176791+1176003(Top 23%)5201(Top 34%)5201(Top 232%)
35K21.75 mi0.75 mi7826+866723+686723+686216(Top 23%)5388(Top 36%)5388(Top 240%)
23M23.00 mi1.25 mi7654+1726592+1316592+1315647(Top 21%)4949(Top 33%)4949(Top 221%)
24M24.00 mi1.00 mi7525+1296480+1126480+1125661(Top 21%)4893(Top 32%)4893(Top 218%)
40K24.85 mi0.85 mi7423+1026388+926388+925515(Top 21%)4702(Top 31%)4702(Top 210%)
25.2M25.20 mi0.35 mi7378+456349+396349+395054(Top 19%)4331(Top 29%)4331(Top 193%)
Finish26.22 mi1.02 mi7219+1596222+1276222+1274647(Top 17%)4036(Top 27%)4036(Top 180%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 30%
×21stories
+97ft-345ft

Overall

8088

Males

6975

M40-44

6975

5K→10K

3.1 - 6.2 mi

Top 31%
×5stories
+79ft-138ft

Overall

8155

Males

7045

M40-44

7045

10K→15K

6.2 - 9.3 mi

Top 30%
×3stories
+67ft-78ft

Overall

8088

Males

6975

M40-44

6975

15K→20K

9.3 - 12.4 mi

Top 30%
×5stories
+106ft-86ft

Overall

7902

Males

6820

M40-44

6820

20K→Half

12.4 - 13.1 mi

Top 32%
×2stories
+19ft-37ft

Overall

8562

Males

7226

M40-44

7226

Half→25K

13.1 - 15.5 mi

Top 31%
×4stories
+66ft-88ft

Overall

8139

Males

6890

M40-44

6890

25K→30K

15.5 - 18.6 mi

Top 26%
×9stories
+181ft-148ft

Overall

7002

Males

6067

M40-44

6067

30K→20M

18.6 - 20.0 mi

Top 28%
×5stories
+64ft-50ft

Overall

7417

Males

6222

M40-44

6222

20M→21M

20.0 - 21.0 mi

Top 23%
×8stories
+106ft-24ft

Overall

6003

Males

5201

M40-44

5201

21M→35K

21.0 - 21.8 mi

Top 23%
×7stories
+17ft-86ft

Overall

6216

Males

5388

M40-44

5388

35K→23M

21.8 - 23.0 mi

Top 21%
×5stories
+23ft-63ft

Overall

5647

Males

4949

M40-44

4949

23M→24M

23.0 - 24.0 mi

Top 21%
×6stories
+12ft-82ft

Overall

5661

Males

4893

M40-44

4893

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

5515

Males

4702

M40-44

4702

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5054

Males

4331

M40-44

4331

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2stories
+22ft-21ft

Overall

4647

Males

4036

M40-44

4036

Passing Analysis

Category:
Athletes Passed
3673*
Passed By
268
Net Change
+3405
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10624
5K → 10K1396*23+1373#10624#9251
10K → 15K41629+387#9251#8864
15K → 20K30130+271#8864#8593
20K → Half3026+4#8593#8589
Half → 25K15536+119#8589#8470
25K → 30K31218+294#8470#8176
30K → 20M13035+95#8176#8081
20M → 21M18112+169#8081#7912
21M → 35K948+86#7912#7826
35K → 23M18311+172#7826#7654
23M → 24M14011+129#7654#7525
24M → 40K11513+102#7525#7423
40K → 25.2M538+45#7423#7378
25.2M → Finish1678+159#7378#7219
TOTALS3673*268+3405

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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