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BOSTON MARATHON 2025

Jonathan Frentzel

Bib: 8001•M

DE

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 5%
Gender (Male)
#0 / 16105
Top 9%
Masters (Masters Men)
#0 / 10463
Top 2%
Division (M40-44)
#0 / 2247
Top 7%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:25
Rank: #2132
Start → 5K
6:15/mi
19:25 split
10K· 6.21 mi
38:51
Rank: #2141 (-9)
5K → 10K
6:15/mi
19:26 split
15K· 9.32 mi
58:27
Rank: #2201 (-60)
10K → 15K
6:19/mi
19:36 split
20K· 12.43 mi
1:18:21
Rank: #2285 (-84)
15K → 20K
6:24/mi
19:54 split
Half· 13.11 mi
1:22:36
Rank: #2275 (+10)
20K → Half
6:14/mi
4:15 split
25K· 15.53 mi
1:37:49
Rank: #2158 (+117)
Half → 25K
6:17/mi
15:13 split
30K· 18.64 mi
1:57:53
Rank: #2063 (+95)
25K → 30K
6:28/mi
20:04 split
20M
2:06:34
Rank: #1965 (+98)
30K → 20M
6:23/mi
8:41 split
21M
2:13:16
Rank: #1887 (+78)
20M → 21M
6:42/mi
6:42 split
35K· 21.75 mi
2:17:55
Rank: #1835 (+52)
21M → 35K
6:13/mi
4:39 split
23M
2:25:56
Rank: #1754 (+81)
35K → 23M
6:24/mi
8:01 split
24M
2:32:16
Rank: #1709 (+45)
23M → 24M
6:20/mi
6:20 split
40K· 24.85 mi
2:37:38
Rank: #1640 (+69)
24M → 40K
6:17/mi
5:22 split
25.2M
2:40:00
Rank: #1617 (+23)
40K → 25.2M
6:52/mi
2:22 split
Finish· 26.22 mi
2:46:06
Rank: #1542 (+75)
25.2M → Finish
5:59/mi
6:06 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:22:36
Pace6:18 /mi
2nd Half
Distance13.11 mi
Time1:23:30
Pace6:22 /mi
📊Positive Split: 1.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:27:0419:256:1519:25
6:15
-
10K
6.21 mi10:46:3038:516:1519:26
6:15
0:00
15K
9.32 mi11:06:0658:276:1619:36
6:19
+0:04
20K
12.43 mi11:26:001:18:216:1819:54
6:24
+0:05
Half
13.11 mi11:30:151:22:366:184:15
6:14
-0:10
25K
15.53 mi11:45:281:37:496:1815:13
6:17
+0:03
30K
18.64 mi12:05:321:57:536:1920:04
6:28
+0:11
20M
20.00 mi12:14:132:06:346:208:41
6:23
-0:05
21M
21.00 mi12:20:552:13:166:216:42
6:42
+0:19
35K
21.75 mi12:25:342:17:556:204:39
6:13
-0:29
23M
23.00 mi12:33:352:25:566:218:01
6:24
+0:11
24M
24.00 mi12:39:552:32:166:216:20
6:20
-0:04
40K
24.85 mi12:45:172:37:386:215:22
6:17
-0:03
25.2M
25.20 mi12:47:392:40:006:212:22
6:52
+0:35
Finish
26.22 mi12:53:452:46:066:206:06
5:59
-0:53

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

5:59 /mi

Average Pace

6:20 /mi

Slowest Pace

6:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:37:02

95% of race

Time at Steady Pace

9:04

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:20 /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 mi10:27:0419:256:1519:25
6:15
#2132
10K
6.21 mi10:46:3038:516:1519:26
6:15
#2141
15K
9.32 mi11:06:0658:276:1619:36
6:19
#2201
20K
12.43 mi11:26:001:18:216:1819:54
6:24
#2285
Half
13.11 mi11:30:151:22:366:184:15
6:14
#2275
25K
15.53 mi11:45:281:37:496:1815:13
6:17
#2158
30K
18.64 mi12:05:321:57:536:1920:04
6:28
#2063
20M
20.00 mi12:14:132:06:346:208:41
6:23
#1965
21M
21.00 mi12:20:552:13:166:216:42
6:42
#1887
35K
21.75 mi12:25:342:17:556:204:39
6:13
#1835
23M
23.00 mi12:33:352:25:566:218:01
6:24
#1754
24M
24.00 mi12:39:552:32:166:216:20
6:20
#1709
40K
24.85 mi12:45:172:37:386:215:22
6:17
#1640
25.2M
25.20 mi12:47:392:40:006:212:22
6:52
#1617
Finish
26.22 mi12:53:452:46:066:206:06
5:59
#1542
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi2132203320332368(Top 8%)2258(Top 14%)2258(Top 100%)
10K6.21 mi3.10 mi2141-92043-102043-102164(Top 8%)2067(Top 13%)2067(Top 92%)
15K9.32 mi3.11 mi2201-602101-582101-582368(Top 8%)2258(Top 14%)2258(Top 100%)
20K12.43 mi3.11 mi2285-842182-812182-812533(Top 9%)2414(Top 15%)2414(Top 107%)
Half13.11 mi0.68 mi2275+102174+82174+82089(Top 7%)1993(Top 12%)1993(Top 89%)
25K15.53 mi2.42 mi2158+1172059+1152059+1151753(Top 6%)1665(Top 10%)1665(Top 74%)
30K18.64 mi3.11 mi2063+951967+921967+921802(Top 6%)1713(Top 11%)1713(Top 76%)
20M20.00 mi1.36 mi1965+981870+971870+971215(Top 4%)1146(Top 7%)1146(Top 51%)
21M21.00 mi1.00 mi1887+781794+761794+761197(Top 4%)1131(Top 7%)1131(Top 50%)
35K21.75 mi0.75 mi1835+521743+511743+511283(Top 5%)1213(Top 8%)1213(Top 54%)
23M23.00 mi1.25 mi1754+811663+801663+801149(Top 4%)1085(Top 7%)1085(Top 48%)
24M24.00 mi1.00 mi1709+451619+441619+441404(Top 5%)1315(Top 8%)1315(Top 59%)
40K24.85 mi0.85 mi1640+691552+671552+67922(Top 3%)864(Top 5%)864(Top 38%)
25.2M25.20 mi0.35 mi1617+231530+221530+221131(Top 4%)1041(Top 6%)1041(Top 46%)
Finish26.22 mi1.02 mi1542+751459+711459+71881(Top 3%)830(Top 5%)830(Top 37%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 8%
×21stories
+97ft-345ft

Overall

2368

Males

2258

M40-44

2258

5K→10K

3.1 - 6.2 mi

Top 8%
×5stories
+79ft-138ft

Overall

2164

Males

2067

M40-44

2067

10K→15K

6.2 - 9.3 mi

Top 8%
×3stories
+67ft-78ft

Overall

2368

Males

2258

M40-44

2258

15K→20K

9.3 - 12.4 mi

Top 9%
×5stories
+106ft-86ft

Overall

2533

Males

2414

M40-44

2414

20K→Half

12.4 - 13.1 mi

Top 7%
×2stories
+19ft-37ft

Overall

2089

Males

1993

M40-44

1993

Half→25K

13.1 - 15.5 mi

Top 6%
×4stories
+66ft-88ft

Overall

1753

Males

1665

M40-44

1665

25K→30K

15.5 - 18.6 mi

Top 6%
×9stories
+181ft-148ft

Overall

1802

Males

1713

M40-44

1713

30K→20M

18.6 - 20.0 mi

Top 4%
×5stories
+64ft-50ft

Overall

1215

Males

1146

M40-44

1146

20M→21M

20.0 - 21.0 mi

Top 4%
×8stories
+106ft-24ft

Overall

1197

Males

1131

M40-44

1131

21M→35K

21.0 - 21.8 mi

Top 5%
×7stories
+17ft-86ft

Overall

1283

Males

1213

M40-44

1213

35K→23M

21.8 - 23.0 mi

Top 4%
×5stories
+23ft-63ft

Overall

1149

Males

1085

M40-44

1085

23M→24M

23.0 - 24.0 mi

Top 5%
×6stories
+12ft-82ft

Overall

1404

Males

1315

M40-44

1315

24M→40K

24.0 - 24.9 mi

Top 3%
×1story
+6ft-20ft

Overall

922

Males

864

M40-44

864

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

1131

Males

1041

M40-44

1041

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2stories
+22ft-21ft

Overall

881

Males

830

M40-44

830

Passing Analysis

Category:
Athletes Passed
1016
Passed By
426
Net Change
+590
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2132
5K → 10K114123-9#2132#2141
10K → 15K50110-60#2141#2201
15K → 20K40124-84#2201#2285
20K → Half166+10#2285#2275
Half → 25K1236+117#2275#2158
25K → 30K11419+95#2158#2063
30K → 20M1057+98#2063#1965
20M → 21M835+78#1965#1887
21M → 35K597+52#1887#1835
35K → 23M832+81#1835#1754
23M → 24M549+45#1754#1709
24M → 40K701+69#1709#1640
40K → 25.2M263+23#1640#1617
25.2M → Finish794+75#1617#1542
TOTALS1016426+590
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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