Boston Marathon logo
BOSTON MARATHON 2023

Jefferson Mixell

Bib: 27176•M

PA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 38%
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:35/mi
26:39
↑ 97↓ 3451.5%
10K· 6.21 mi
7:40/mi
50:29
↑ 79↓ 1380.4%
15K· 9.32 mi
7:44/mi
1:14:30
↑ 67↓ 78
20K· 12.43 mi
7:29/mi
1:37:46
↑ 106↓ 860.1%
Half· 13.11 mi
7:24/mi
1:42:49
↑ 19↓ 370.5%
25K· 15.53 mi
7:33/mi
2:01:07
↑ 66↓ 880.2%
30K· 18.64 mi
7:48/mi
2:25:20
↑ 181↓ 1480.2%
20M
7:46/mi
2:35:53
↑ 64↓ 500.2%
21M
8:16/mi
2:44:09
↑ 106↓ 241.6%
35K· 21.75 mi
7:26/mi
2:49:43
↑ 17↓ 861.7%
23M
7:50/mi
2:59:31
↑ 23↓ 630.6%
24M
7:41/mi
3:07:12
↓ 821.3%
40K· 24.85 mi
7:23/mi
3:13:31
↓ 200.3%
25.2M
7:44/mi
3:16:11
↑ 13↓ 160.2%
Finish· 26.22 mi
6:54/mi
3:23:13
↑ 22↓ 21

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
Distance13.11 mi
Time1:42:49
Pace7:51 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:40:24
Pace7:40 /mi
📊Negative Split: 2.4% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:3826:398:3526:39
8:35
-
10K
6.21 mi12:12:2850:298:0723:50
7:40
-0:55
15K
9.32 mi12:36:291:14:308:0024:01
7:44
+0:04
20K
12.43 mi12:59:451:37:467:5223:16
7:29
-0:15
Half
13.11 mi13:04:481:42:497:515:03
7:24
-0:05
25K
15.53 mi13:23:062:01:077:4818:18
7:33
+0:09
30K
18.64 mi13:47:192:25:207:4824:13
7:48
+0:15
20M
20.00 mi13:57:522:35:537:4810:33
7:46
-0:02
21M
21.00 mi14:06:082:44:097:498:16
8:16
+0:30
35K
21.75 mi14:11:422:49:437:485:34
7:26
-0:50
23M
23.00 mi14:21:302:59:317:489:48
7:50
+0:24
24M
24.00 mi14:29:113:07:127:487:41
7:41
-0:09
40K
24.85 mi14:35:303:13:317:476:19
7:23
-0:18
25.2M
25.20 mi14:38:103:16:117:472:40
7:44
+0:21
Finish
26.22 mi14:45:123:23:137:457:02
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

7:45 /mi

Slowest Pace

8:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

47:14

23% of race

Time at Steady Pace

2:01:04

60% of race

Time at Slower Pace

34:55

17% of race

Average Pace: 7:45 /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 mi11:48:3826:398:3526:39
8:35
#18073
10K
6.21 mi12:12:2850:298:0723:50
7:40
#15273
15K
9.32 mi12:36:291:14:308:0024:01
7:44
#14307
20K
12.43 mi12:59:451:37:467:5223:16
7:29
#13005
Half
13.11 mi13:04:481:42:497:515:03
7:24
#12794
25K
15.53 mi13:23:062:01:077:4818:18
7:33
#12149
30K
18.64 mi13:47:192:25:207:4824:13
7:48
#11578
20M
20.00 mi13:57:522:35:537:4810:33
7:46
#11308
21M
21.00 mi14:06:082:44:097:498:16
8:16
#11125
35K
21.75 mi14:11:422:49:437:485:34
7:26
#11004
23M
23.00 mi14:21:302:59:317:489:48
7:50
#10833
24M
24.00 mi14:29:113:07:127:487:41
7:41
#10735
40K
24.85 mi14:35:303:13:317:476:19
7:23
#10520
25.2M
25.20 mi14:38:103:16:117:472:40
7:44
#10402
Finish
26.22 mi14:45:123:23:137:457:02
6:54
#10109
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi18073114451144512081(Top 45%)9117(Top 60%)9117(Top 173%)
10K6.21 mi3.10 mi15273+280010435+101010435+101011977(Top 45%)9098(Top 60%)9098(Top 172%)
15K9.32 mi3.11 mi14307+96610047+38810047+38812081(Top 45%)9117(Top 60%)9117(Top 173%)
20K12.43 mi3.11 mi13005+13029499+5489499+5489225(Top 35%)7645(Top 50%)7645(Top 145%)
Half13.11 mi0.68 mi12794+2119415+849415+849427(Top 35%)7777(Top 51%)7777(Top 147%)
25K15.53 mi2.42 mi12149+6459110+3059110+3059131(Top 34%)7516(Top 50%)7516(Top 142%)
30K18.64 mi3.11 mi11578+5718827+2838827+2839316(Top 35%)7465(Top 49%)7465(Top 141%)
20M20.00 mi1.36 mi11308+2708689+1388689+1388585(Top 32%)6952(Top 46%)6952(Top 132%)
21M21.00 mi1.00 mi11125+1838587+1028587+1029012(Top 34%)7081(Top 47%)7081(Top 134%)
35K21.75 mi0.75 mi11004+1218510+778510+778094(Top 30%)6565(Top 43%)6565(Top 124%)
23M23.00 mi1.25 mi10833+1718401+1098401+1098601(Top 32%)6759(Top 45%)6759(Top 128%)
24M24.00 mi1.00 mi10735+988324+778324+778963(Top 34%)6877(Top 45%)6877(Top 130%)
40K24.85 mi0.85 mi10520+2158182+1428182+1426012(Top 23%)5036(Top 33%)5036(Top 95%)
25.2M25.20 mi0.35 mi10402+1188113+698113+695069(Top 19%)4346(Top 29%)4346(Top 82%)
Finish26.22 mi1.02 mi10109+2937944+1697944+1694655(Top 17%)4044(Top 27%)4044(Top 77%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 45%
×21story building
+97ft-345ft

Overall

12081

Males

9117

M18-39

9117

5K→10K

3.1 - 6.2 mi

Top 45%
×5story building
+79ft-138ft

Overall

11977

Males

9098

M18-39

9098

10K→15K

6.2 - 9.3 mi

Top 45%
×3story building
+67ft-78ft

Overall

12081

Males

9117

M18-39

9117

15K→20K

9.3 - 12.4 mi

Top 35%
×5story building
+106ft-86ft

Overall

9225

Males

7645

M18-39

7645

20K→Half

12.4 - 13.1 mi

Top 35%
×2story building
+19ft-37ft

Overall

9427

Males

7777

M18-39

7777

Half→25K

13.1 - 15.5 mi

Top 34%
×4story building
+66ft-88ft

Overall

9131

Males

7516

M18-39

7516

25K→30K

15.5 - 18.6 mi

Top 35%
×9story building
+181ft-148ft

Overall

9316

Males

7465

M18-39

7465

30K→20M

18.6 - 20.0 mi

Top 32%
×5story building
+64ft-50ft

Overall

8585

Males

6952

M18-39

6952

20M→21M

20.0 - 21.0 mi

Top 34%
×8story building
+106ft-24ft

Overall

9012

Males

7081

M18-39

7081

21M→35K

21.0 - 21.8 mi

Top 30%
×7story building
+17ft-86ft

Overall

8094

Males

6565

M18-39

6565

35K→23M

21.8 - 23.0 mi

Top 32%
×5story building
+23ft-63ft

Overall

8601

Males

6759

M18-39

6759

23M→24M

23.0 - 24.0 mi

Top 34%
×6story building
+12ft-82ft

Overall

8963

Males

6877

M18-39

6877

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

6012

Males

5036

M18-39

5036

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5069

Males

4346

M18-39

4346

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2story building
+22ft-21ft

Overall

4655

Males

4044

M18-39

4044

Passing Analysis

Category:
Athletes Passed
8048
Passed By
84
Net Change
+7964
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18073
5K → 10K28088+2800#18073#15273
10K → 15K9748+966#15273#14307
15K → 20K13031+1302#14307#13005
20K → Half2110+211#13005#12794
Half → 25K6461+645#12794#12149
25K → 30K5787+571#12149#11578
30K → 20M2744+270#11578#11308
20M → 21M19613+183#11308#11125
21M → 35K1276+121#11125#11004
35K → 23M1798+171#11004#10833
23M → 24M12224+98#10833#10735
24M → 40K2194+215#10735#10520
40K → 25.2M1180+118#10520#10402
25.2M → Finish2930+293#10402#10109
TOTALS804884+7964
📊

Passing Visuals

Category:
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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing