Boston Marathon logo
BOSTON MARATHON 2023

Erik Quarfordt

Bib: 10557•M

NY

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 25%
Gender (Male)
#0 / 15176
Top 39%
Masters (Masters Men)
#0 / 9891
Top 25%
Division (M45-49)
#0 / 2252
Top 33%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:14
Rank: #7218
Start → 5K
22:14 | 7:09/mi
10K· 6.21 mi
45:11
Rank: #8255 (-1037)
5K → 10K
22:57 | 7:23/mi
15K· 9.32 mi
1:07:55
Rank: #8344 (-89)
10K → 15K
22:44 | 7:19/mi
20K· 12.43 mi
1:30:33
Rank: #8144 (+200)
15K → 20K
22:38 | 7:17/mi
Half· 13.11 mi
1:35:21
Rank: #8070 (+74)
20K → Half
4:48 | 7:02/mi
25K· 15.53 mi
1:53:04
Rank: #7917 (+153)
Half → 25K
17:43 | 7:18/mi
30K· 18.64 mi
2:16:19
Rank: #7723 (+194)
25K → 30K
23:15 | 7:29/mi
20M
2:26:34
Rank: #7647 (+76)
30K → 20M
10:15 | 7:33/mi
21M
2:34:15
Rank: #7496 (+151)
20M → 21M
7:41 | 7:41/mi
35K· 21.75 mi
2:39:26
Rank: #7378 (+118)
21M → 35K
5:11 | 6:56/mi
23M
2:48:34
Rank: #7203 (+175)
35K → 23M
9:08 | 7:18/mi
24M
2:55:38
Rank: #7068 (+135)
23M → 24M
7:04 | 7:04/mi
40K· 24.85 mi
3:01:45
Rank: #6940 (+128)
24M → 40K
6:07 | 7:09/mi
25.2M
3:04:18
Rank: #6849 (+91)
40K → 25.2M
2:33 | 7:24/mi
Finish· 26.22 mi
3:11:20
Rank: #6715 (+134)
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
Time1:35:21
Pace7:16 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:35:59
Pace7:19 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:1722:147:0922:14
7:09
-
10K
6.21 mi11:11:1445:117:1622:57
7:23
+0:14
15K
9.32 mi11:33:581:07:557:1722:44
7:19
-0:04
20K
12.43 mi11:56:361:30:337:1722:38
7:17
-0:02
Half
13.11 mi12:01:241:35:217:164:48
7:02
-0:15
25K
15.53 mi12:19:071:53:047:1717:43
7:18
+0:16
30K
18.64 mi12:42:222:16:197:1923:15
7:29
+0:11
20M
20.00 mi12:52:372:26:347:2010:15
7:33
+0:04
21M
21.00 mi13:00:182:34:157:217:41
7:41
+0:08
35K
21.75 mi13:05:292:39:267:205:11
6:56
-0:45
23M
23.00 mi13:14:372:48:347:209:08
7:18
+0:22
24M
24.00 mi13:21:412:55:387:197:04
7:04
-0:14
40K
24.85 mi13:27:483:01:457:196:07
7:09
+0:05
25.2M
25.20 mi13:30:213:04:187:192:33
7:24
+0:15
Finish
26.22 mi13:37:233:11:207:187:02
6:54
-0:30

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

7:18 /mi

Slowest Pace

7:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:03:39

96% of race

Time at Steady Pace

7:41

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:18 /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 mi10:48:1722:147:0922:14
7:09
#7218
10K
6.21 mi11:11:1445:117:1622:57
7:23
#8255
15K
9.32 mi11:33:581:07:557:1722:44
7:19
#8344
20K
12.43 mi11:56:361:30:337:1722:38
7:17
#8144
Half
13.11 mi12:01:241:35:217:164:48
7:02
#8070
25K
15.53 mi12:19:071:53:047:1717:43
7:18
#7917
30K
18.64 mi12:42:222:16:197:1923:15
7:29
#7723
20M
20.00 mi12:52:372:26:347:2010:15
7:33
#7647
21M
21.00 mi13:00:182:34:157:217:41
7:41
#7496
35K
21.75 mi13:05:292:39:267:205:11
6:56
#7378
23M
23.00 mi13:14:372:48:347:209:08
7:18
#7203
24M
24.00 mi13:21:412:55:387:197:04
7:04
#7068
40K
24.85 mi13:27:483:01:457:196:07
7:09
#6940
25.2M
25.20 mi13:30:213:04:187:192:33
7:24
#6849
Finish
26.22 mi13:37:233:11:207:187:02
6:54
#6715
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi7218643564358688(Top 33%)7358(Top 48%)7358(Top 327%)
10K6.21 mi3.10 mi8255-10377120-6857120-6859471(Top 36%)7843(Top 52%)7843(Top 348%)
15K9.32 mi3.11 mi8344-897171-517171-518688(Top 33%)7358(Top 48%)7358(Top 327%)
20K12.43 mi3.11 mi8144+2007036+1357036+1357656(Top 29%)6659(Top 44%)6659(Top 296%)
Half13.11 mi0.68 mi8070+746980+566980+566731(Top 25%)6038(Top 40%)6038(Top 268%)
25K15.53 mi2.42 mi7917+1536861+1196861+1197316(Top 27%)6360(Top 42%)6360(Top 282%)
30K18.64 mi3.11 mi7723+1946700+1616700+1617097(Top 27%)6132(Top 40%)6132(Top 272%)
20M20.00 mi1.36 mi7647+766631+696631+697056(Top 27%)6008(Top 40%)6008(Top 267%)
21M21.00 mi1.00 mi7496+1516512+1196512+1195532(Top 21%)4858(Top 32%)4858(Top 216%)
35K21.75 mi0.75 mi7378+1186427+856427+854970(Top 19%)4476(Top 29%)4476(Top 199%)
23M23.00 mi1.25 mi7203+1756291+1366291+1365293(Top 20%)4680(Top 31%)4680(Top 208%)
24M24.00 mi1.00 mi7068+1356181+1106181+1105029(Top 19%)4447(Top 29%)4447(Top 197%)
40K24.85 mi0.85 mi6940+1286074+1076074+1074655(Top 17%)4106(Top 27%)4106(Top 182%)
25.2M25.20 mi0.35 mi6849+916004+706004+703443(Top 13%)3126(Top 21%)3126(Top 139%)
Finish26.22 mi1.02 mi6715+1345896+1085896+1084643(Top 17%)4032(Top 27%)4032(Top 179%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21stories
+97ft-345ft

Overall

8688

Males

7358

M45-49

7358

5K→10K

3.1 - 6.2 mi

Top 36%
×5stories
+79ft-138ft

Overall

9471

Males

7843

M45-49

7843

10K→15K

6.2 - 9.3 mi

Top 33%
×3stories
+67ft-78ft

Overall

8688

Males

7358

M45-49

7358

15K→20K

9.3 - 12.4 mi

Top 29%
×5stories
+106ft-86ft

Overall

7656

Males

6659

M45-49

6659

20K→Half

12.4 - 13.1 mi

Top 25%
×2stories
+19ft-37ft

Overall

6731

Males

6038

M45-49

6038

Half→25K

13.1 - 15.5 mi

Top 27%
×4stories
+66ft-88ft

Overall

7316

Males

6360

M45-49

6360

25K→30K

15.5 - 18.6 mi

Top 27%
×9stories
+181ft-148ft

Overall

7097

Males

6132

M45-49

6132

30K→20M

18.6 - 20.0 mi

Top 27%
×5stories
+64ft-50ft

Overall

7056

Males

6008

M45-49

6008

20M→21M

20.0 - 21.0 mi

Top 21%
×8stories
+106ft-24ft

Overall

5532

Males

4858

M45-49

4858

21M→35K

21.0 - 21.8 mi

Top 19%
×7stories
+17ft-86ft

Overall

4970

Males

4476

M45-49

4476

35K→23M

21.8 - 23.0 mi

Top 20%
×5stories
+23ft-63ft

Overall

5293

Males

4680

M45-49

4680

23M→24M

23.0 - 24.0 mi

Top 19%
×6stories
+12ft-82ft

Overall

5029

Males

4447

M45-49

4447

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4655

Males

4106

M45-49

4106

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3443

Males

3126

M45-49

3126

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2stories
+22ft-21ft

Overall

4643

Males

4032

M45-49

4032

Passing Analysis

Category:
Athletes Passed
1937
Passed By
1434
Net Change
+503
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7218
5K → 10K221059-1037#7218#8255
10K → 15K107196-89#8255#8344
15K → 20K24040+200#8344#8144
20K → Half751+74#8144#8070
Half → 25K18027+153#8070#7917
25K → 30K24147+194#7917#7723
30K → 20M10933+76#7723#7647
20M → 21M1565+151#7647#7496
21M → 35K1224+118#7496#7378
35K → 23M1783+175#7378#7203
23M → 24M1394+135#7203#7068
24M → 40K1335+128#7068#6940
40K → 25.2M943+91#6940#6849
25.2M → Finish1417+134#6849#6715
TOTALS19371434+503
📊

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