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BOSTON MARATHON 2023

Eric Tandy

Bib: 2229•M

UT

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 5%
Gender (Male)
#0 / 15176
Top 9%
Division (M18-39)
#0 / 5285
Top 20%
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
6:22/mi
19:48
↑ 97↓ 3451.5%
10K· 6.21 mi
6:11/mi
39:01
↑ 79↓ 1380.4%
15K· 9.32 mi
6:20/mi
58:41
↑ 67↓ 78
20K· 12.43 mi
7:08/mi
1:20:51
↑ 106↓ 860.1%
Half· 13.11 mi
5:58/mi
1:24:55
↑ 19↓ 370.5%
25K· 15.53 mi
6:11/mi
1:39:55
↑ 66↓ 880.2%
30K· 18.64 mi
6:16/mi
1:59:23
↑ 181↓ 1480.2%
20M
6:27/mi
2:08:10
↑ 64↓ 500.2%
21M
6:27/mi
2:14:37
↑ 106↓ 241.6%
35K· 21.75 mi
6:16/mi
2:19:18
↑ 17↓ 861.7%
23M
6:30/mi
2:27:26
↑ 23↓ 630.6%
24M
6:16/mi
2:33:42
↓ 821.3%
40K· 24.85 mi
6:13/mi
2:39:01
↓ 200.3%
25.2M
6:01/mi
2:41:05
↑ 13↓ 160.2%
Finish· 26.22 mi
6:01/mi
2:47:13
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:24:55
Pace6:29 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:22:18
Pace6:17 /mi
📊Negative Split: 3.1% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:4219:486:2219:48
6:22
-
10K
6.21 mi10:39:5539:016:1719:13
6:11
-0:11
15K
9.32 mi10:59:3558:416:1819:40
6:20
+0:09
20K
12.43 mi11:21:451:20:516:3022:10
7:08
+0:48
Half
13.11 mi11:25:491:24:556:294:04
5:58
-1:10
25K
15.53 mi11:40:491:39:556:2615:00
6:11
+0:13
30K
18.64 mi12:00:171:59:236:2419:28
6:16
+0:05
20M
20.00 mi12:09:042:08:106:248:47
6:27
+0:11
21M
21.00 mi12:15:312:14:376:256:27
6:27
0:00
35K
21.75 mi12:20:122:19:186:244:41
6:16
-0:11
23M
23.00 mi12:28:202:27:266:258:08
6:30
+0:14
24M
24.00 mi12:34:362:33:426:246:16
6:16
-0:14
40K
24.85 mi12:39:552:39:016:245:19
6:13
-0:03
25.2M
25.20 mi12:41:592:41:056:242:04
6:01
-0:12
Finish
26.22 mi12:48:072:47:136:236:08
6:01
0:00

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

5:58 /mi

Average Pace

6:23 /mi

Slowest Pace

7:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:25:03

87% of race

Time at Steady Pace

0:00

0% of race

Time at Slower Pace

22:10

13% of race

Average Pace: 6:23 /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 mi10:20:4219:486:2219:48
6:22
#1701
10K
6.21 mi10:39:5539:016:1719:13
6:11
#1487
15K
9.32 mi10:59:3558:416:1819:40
6:20
#1569
20K
12.43 mi11:21:451:20:516:3022:10
7:08
#2477
Half
13.11 mi11:25:491:24:556:294:04
5:58
#2343
25K
15.53 mi11:40:491:39:556:2615:00
6:11
#2054
30K
18.64 mi12:00:171:59:236:2419:28
6:16
#1745
20M
20.00 mi12:09:042:08:106:248:47
6:27
#1699
21M
21.00 mi12:15:312:14:376:256:27
6:27
#1608
35K
21.75 mi12:20:122:19:186:244:41
6:16
#1592
23M
23.00 mi12:28:202:27:266:258:08
6:30
#1557
24M
24.00 mi12:34:362:33:426:246:16
6:16
#1524
40K
24.85 mi12:39:552:39:016:245:19
6:13
#1467
25.2M
25.20 mi12:41:592:41:056:242:04
6:01
#1420
Finish
26.22 mi12:48:072:47:136:236:08
6:01
#1367
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1701162116211776(Top 7%)1700(Top 11%)1700(Top 32%)
10K6.21 mi3.10 mi1487+2141418+2031418+2031292(Top 5%)1229(Top 8%)1229(Top 23%)
15K9.32 mi3.11 mi1569-821499-811499-811776(Top 7%)1700(Top 11%)1700(Top 32%)
20K12.43 mi3.11 mi2477-9082372-8732372-8736724(Top 25%)6003(Top 40%)6003(Top 114%)
Half13.11 mi0.68 mi2343+1342246+1262246+126689(Top 3%)649(Top 4%)649(Top 12%)
25K15.53 mi2.42 mi2054+2891969+2771969+277973(Top 4%)924(Top 6%)924(Top 17%)
30K18.64 mi3.11 mi1745+3091669+3001669+300833(Top 3%)793(Top 5%)793(Top 15%)
20M20.00 mi1.36 mi1699+461625+441625+441301(Top 5%)1240(Top 8%)1240(Top 23%)
21M21.00 mi1.00 mi1608+911537+881537+88579(Top 2%)544(Top 4%)544(Top 10%)
35K21.75 mi0.75 mi1592+161522+151522+151427(Top 5%)1353(Top 9%)1353(Top 26%)
23M23.00 mi1.25 mi1557+351487+351487+351397(Top 5%)1325(Top 9%)1325(Top 25%)
24M24.00 mi1.00 mi1524+331455+321455+321246(Top 5%)1180(Top 8%)1180(Top 22%)
40K24.85 mi0.85 mi1467+571400+551400+55699(Top 3%)662(Top 4%)662(Top 13%)
25.2M25.20 mi0.35 mi1420+471354+461354+4681(Top 0.3%)71(Top 0.5%)71(Top 1%)
Finish26.22 mi1.02 mi1367+531302+521302+52746(Top 3%)713(Top 5%)713(Top 13%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 7%
×21story building
+97ft-345ft

Overall

1776

Males

1700

M18-39

1700

5K→10K

3.1 - 6.2 mi

Top 5%
×5story building
+79ft-138ft

Overall

1292

Males

1229

M18-39

1229

10K→15K

6.2 - 9.3 mi

Top 7%
×3story building
+67ft-78ft

Overall

1776

Males

1700

M18-39

1700

15K→20K

9.3 - 12.4 mi

Top 25%
×5story building
+106ft-86ft

Overall

6724

Males

6003

M18-39

6003

20K→Half

12.4 - 13.1 mi

Top 3%
×2story building
+19ft-37ft

Overall

689

Males

649

M18-39

649

Half→25K

13.1 - 15.5 mi

Top 4%
×4story building
+66ft-88ft

Overall

973

Males

924

M18-39

924

25K→30K

15.5 - 18.6 mi

Top 3%
×9story building
+181ft-148ft

Overall

833

Males

793

M18-39

793

30K→20M

18.6 - 20.0 mi

Top 5%
×5story building
+64ft-50ft

Overall

1301

Males

1240

M18-39

1240

20M→21M

20.0 - 21.0 mi

Top 2%
×8story building
+106ft-24ft

Overall

579

Males

544

M18-39

544

21M→35K

21.0 - 21.8 mi

Top 5%
×7story building
+17ft-86ft

Overall

1427

Males

1353

M18-39

1353

35K→23M

21.8 - 23.0 mi

Top 5%
×5story building
+23ft-63ft

Overall

1397

Males

1325

M18-39

1325

23M→24M

23.0 - 24.0 mi

Top 5%
×6story building
+12ft-82ft

Overall

1246

Males

1180

M18-39

1180

24M→40K

24.0 - 24.9 mi

Top 3%
×1story
+6ft-20ft

Overall

699

Males

662

M18-39

662

40K→25.2M

24.9 - 25.2 mi

Top 0.3%
×1story
+13ft-16ft

Overall

81

Males

71

M18-39

71

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2story building
+22ft-21ft

Overall

746

Males

713

M18-39

713

Passing Analysis

Category:
Athletes Passed
1418
Passed By
1084
Net Change
+334
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1701
5K → 10K23218+214#1701#1487
10K → 15K25107-82#1487#1569
15K → 20K4912-908#1569#2477
20K → Half1340+134#2477#2343
Half → 25K2890+289#2343#2054
25K → 30K3112+309#2054#1745
30K → 20M537+46#1745#1699
20M → 21M921+91#1699#1608
21M → 35K226+16#1608#1592
35K → 23M4914+35#1592#1557
23M → 24M429+33#1557#1524
24M → 40K603+57#1524#1467
40K → 25.2M470+47#1467#1420
25.2M → Finish585+53#1420#1367
TOTALS14181084+334
📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing