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BOSTON MARATHON 2023

Greg Friesen

Bib: 12670•M

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 31%
Gender (Male)
#0 / 15176
Top 46%
Masters (Masters Men)
#0 / 9891
Top 33%
Division (M45-49)
#0 / 2252
Top 45%
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
7:33/mi
23:27
↑ 97↓ 3451.5%
10K· 6.21 mi
7:30/mi
46:46
↑ 79↓ 1380.4%
15K· 9.32 mi
7:29/mi
1:10:01
↑ 67↓ 78
20K· 12.43 mi
7:29/mi
1:33:15
↑ 106↓ 860.1%
Half· 13.11 mi
7:29/mi
1:38:21
↑ 19↓ 370.5%
25K· 15.53 mi
7:30/mi
1:56:31
↑ 66↓ 880.2%
30K· 18.64 mi
7:41/mi
2:20:24
↑ 181↓ 1480.2%
20M
7:34/mi
2:30:41
↑ 64↓ 500.2%
21M
7:51/mi
2:38:32
↑ 106↓ 241.6%
35K· 21.75 mi
7:24/mi
2:44:04
↑ 17↓ 861.7%
23M
7:31/mi
2:53:29
↑ 23↓ 630.6%
24M
7:28/mi
3:00:57
↓ 821.3%
40K· 24.85 mi
7:24/mi
3:07:17
↓ 200.3%
25.2M
7:58/mi
3:10:02
↑ 13↓ 160.2%
Finish· 26.22 mi
6:58/mi
3:17:08
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:38:21
Pace7:30 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:38:47
Pace7:32 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:0323:277:3323:27
7:33
-
10K
6.21 mi11:14:2246:467:3223:19
7:30
-0:03
15K
9.32 mi11:37:371:10:017:3123:15
7:29
-0:01
20K
12.43 mi12:00:511:33:157:3023:14
7:29
0:00
Half
13.11 mi12:05:571:38:217:305:06
7:29
0:00
25K
15.53 mi12:24:071:56:317:3018:10
7:30
+0:01
30K
18.64 mi12:48:002:20:247:3223:53
7:41
+0:11
20M
20.00 mi12:58:172:30:417:3210:17
7:34
-0:07
21M
21.00 mi13:06:082:38:327:337:51
7:51
+0:17
35K
21.75 mi13:11:402:44:047:335:32
7:24
-0:27
23M
23.00 mi13:21:052:53:297:339:25
7:31
+0:07
24M
24.00 mi13:28:333:00:577:327:28
7:28
-0:03
40K
24.85 mi13:34:533:07:177:326:20
7:24
-0:04
25.2M
25.20 mi13:37:383:10:027:322:45
7:58
+0:34
Finish
26.22 mi13:44:443:17:087:317:06
6:58
-1:00

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

6:58 /mi

Average Pace

7:31 /mi

Slowest Pace

7:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:42:39

83% of race

Time at Steady Pace

34:29

17% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:31 /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 mi10:51:0323:277:3323:27
7:33
#10042
10K
6.21 mi11:14:2246:467:3223:19
7:30
#10272
15K
9.32 mi11:37:371:10:017:3123:15
7:29
#10166
20K
12.43 mi12:00:511:33:157:3023:14
7:29
#9856
Half
13.11 mi12:05:571:38:217:305:06
7:29
#9863
25K
15.53 mi12:24:071:56:317:3018:10
7:30
#9652
30K
18.64 mi12:48:002:20:247:3223:53
7:41
#9413
20M
20.00 mi12:58:172:30:417:3210:17
7:34
#9226
21M
21.00 mi13:06:082:38:327:337:51
7:51
#9022
35K
21.75 mi13:11:402:44:047:335:32
7:24
#8971
23M
23.00 mi13:21:052:53:297:339:25
7:31
#8796
24M
24.00 mi13:28:333:00:577:327:28
7:28
#8714
40K
24.85 mi13:34:533:07:177:326:20
7:24
#8590
25.2M
25.20 mi13:37:383:10:027:322:45
7:58
#8536
Finish
26.22 mi13:44:443:17:087:317:06
6:58
#8339
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi100428146814610030(Top 38%)8156(Top 54%)8156(Top 362%)
10K6.21 mi3.10 mi10272-2308295-1498295-14910465(Top 39%)8411(Top 55%)8411(Top 373%)
15K9.32 mi3.11 mi10166+1068261+348261+3410030(Top 38%)8156(Top 54%)8156(Top 362%)
20K12.43 mi3.11 mi9856+3108068+1938068+1939130(Top 34%)7573(Top 50%)7573(Top 336%)
Half13.11 mi0.68 mi9863-78076-88076-89938(Top 37%)8048(Top 53%)8048(Top 357%)
25K15.53 mi2.42 mi9652+2117933+1437933+1438721(Top 33%)7275(Top 48%)7275(Top 323%)
30K18.64 mi3.11 mi9413+2397744+1897744+1898537(Top 32%)7005(Top 46%)7005(Top 311%)
20M20.00 mi1.36 mi9226+1877610+1347610+1347283(Top 27%)6148(Top 41%)6148(Top 273%)
21M21.00 mi1.00 mi9022+2047472+1387472+1386451(Top 24%)5523(Top 36%)5523(Top 245%)
35K21.75 mi0.75 mi8971+517432+407432+407756(Top 29%)6352(Top 42%)6352(Top 282%)
23M23.00 mi1.25 mi8796+1757297+1357297+1356543(Top 25%)5539(Top 36%)5539(Top 246%)
24M24.00 mi1.00 mi8714+827228+697228+697462(Top 28%)5987(Top 39%)5987(Top 266%)
40K24.85 mi0.85 mi8590+1247135+937135+936141(Top 23%)5115(Top 34%)5115(Top 227%)
25.2M25.20 mi0.35 mi8536+547096+397096+396347(Top 24%)5183(Top 34%)5183(Top 230%)
Finish26.22 mi1.02 mi8339+1976942+1546942+1545020(Top 19%)4291(Top 28%)4291(Top 191%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21story building
+97ft-345ft

Overall

10030

Males

8156

M45-49

8156

5K→10K

3.1 - 6.2 mi

Top 39%
×5story building
+79ft-138ft

Overall

10465

Males

8411

M45-49

8411

10K→15K

6.2 - 9.3 mi

Top 38%
×3story building
+67ft-78ft

Overall

10030

Males

8156

M45-49

8156

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

9130

Males

7573

M45-49

7573

20K→Half

12.4 - 13.1 mi

Top 37%
×2story building
+19ft-37ft

Overall

9938

Males

8048

M45-49

8048

Half→25K

13.1 - 15.5 mi

Top 33%
×4story building
+66ft-88ft

Overall

8721

Males

7275

M45-49

7275

25K→30K

15.5 - 18.6 mi

Top 32%
×9story building
+181ft-148ft

Overall

8537

Males

7005

M45-49

7005

30K→20M

18.6 - 20.0 mi

Top 27%
×5story building
+64ft-50ft

Overall

7283

Males

6148

M45-49

6148

20M→21M

20.0 - 21.0 mi

Top 24%
×8story building
+106ft-24ft

Overall

6451

Males

5523

M45-49

5523

21M→35K

21.0 - 21.8 mi

Top 29%
×7story building
+17ft-86ft

Overall

7756

Males

6352

M45-49

6352

35K→23M

21.8 - 23.0 mi

Top 25%
×5story building
+23ft-63ft

Overall

6543

Males

5539

M45-49

5539

23M→24M

23.0 - 24.0 mi

Top 28%
×6story building
+12ft-82ft

Overall

7462

Males

5987

M45-49

5987

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

6141

Males

5115

M45-49

5115

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6347

Males

5183

M45-49

5183

25.2M→Finish

25.2 - 26.2 mi

Top 19%
×2story building
+22ft-21ft

Overall

5020

Males

4291

M45-49

4291

Passing Analysis

Category:
Athletes Passed
2506*
Passed By
803
Net Change
+1703
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10042
5K → 10K212442-230#10042#10272
10K → 15K239133+106#10272#10166
15K → 20K351*41+310#10166#9856
20K → Half2229-7#9856#9863
Half → 25K23524+211#9863#9652
25K → 30K298*59+239#9652#9413
30K → 20M1947+187#9413#9226
20M → 21M2117+204#9226#9022
21M → 35K6514+51#9022#8971
35K → 23M1849+175#8971#8796
23M → 24M10018+82#8796#8714
24M → 40K1328+124#8714#8590
40K → 25.2M606+54#8590#8536
25.2M → Finish2036+197#8536#8339
TOTALS2506*803+1703

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

📊

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