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SF MARATHON 1ST HALF 2026

Preston Chong

San Francisco, CA

Bib: 14223 M 25

0:00
0:00
/ mi
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Overall
#0 / 6575
Top 12%
Gender (Male)
#0 / 3619
Top 18%
Division (M25-29)
#0 / 796
Top 19%
Race Day Weather
59°/49°F
scattered clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
10 ft elev
2M
8:15/mi
16:30
→ flat
12 ft elev
4M
8:12/mi
32:54
↑ 67↓ 69
10 ft elev
6M
8:13/mi
49:21
↑ 1231.1%
126 ft elev
8M
8:06/mi
1:05:33
↑ 166↓ 531.1%
246 ft elev
9.6M
8:06/mi
1:18:30
↑ 68↓ 1931.5%
126 ft elev
10M
15:31/mi
1:24:42
↓ 241.1%
90 ft elev
10.5M
4:18/mi
1:26:51
↓ 732.7%
18 ft elev
12M
12:31/mi
1:45:37
↑ 2803.2%
272 ft elev
Finish· 13.11 mi
8:44/mi
1:55:18
↑ 14↓ 891.3%
205 ft elev
Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent

The Course

Half Splits

1st Half· via 6M
49:218:14 /mi⚡ faster
2nd Half
1:05:579:17 /mi+33.6%
Positive split — 33.6% slower in the second half
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Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi06:49:0316:308:1516:30
8:15
-
4M
4.00 mi07:05:2732:548:1416:24
8:12
-0:03
6M
6.00 mi07:21:5449:218:1416:27
8:13
+0:01
8M
8.00 mi07:38:061:05:338:1216:12
8:06
-0:07
9.6M
9.60 mi07:51:031:18:308:1112:57
8:06
0:00
10M
10.00 mi07:57:151:24:428:286:12
15:31
+7:25
10.5M
10.50 mi07:59:241:26:518:162:09
4:18
-11:13
12M
12.00 mi08:18:101:45:378:4818:46
12:31
+8:13
Finish
13.11 mi08:27:511:55:188:489:41
8:44
-3:47

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

4:18 /mi

Average Pace

8:48 /mi

Slowest Pace

15:31 /mi

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Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:09

2% of race

Time at Steady Pace

1:28:11

76% of race

Time at Slower Pace

24:58

22% of race

Average Pace: 8:48 /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.

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0mi3.3mi6.6mi9.8mi13.1mi
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
2M
2.00 mi06:49:0316:308:1516:30
8:15
#683
4M
4.00 mi07:05:2732:548:1416:24
8:12
#620
6M
6.00 mi07:21:5449:218:1416:27
8:13
#617
8M
8.00 mi07:38:061:05:338:1216:12
8:06
#545
9.6M
9.60 mi07:51:031:18:308:1112:57
8:06
#654
10M
10.00 mi07:57:151:24:428:286:12
15:31
#661
10.5M
10.50 mi07:59:241:26:518:162:09
4:18
#666
12M
12.00 mi08:18:101:45:378:4818:46
12:31
#773
Finish
13.11 mi08:27:511:55:188:489:41
8:44
#780
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior
Featured Segment

Garmin Challenge

Top 15%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

8:21

Segment Time

9:17/mi

Pace

0.90 mi

Distance

Overall

977

Men

776

Division

189

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM25-29Seg. OverallSeg. MalesSeg. M25-29
2M2.00 mi2.00 mi68356913515661147269
4M4.00 mi2.00 mi620+63521+48124+11597499120
6M6.00 mi2.00 mi617+3518+3122+2641533123
8M8.00 mi2.00 mi545+72462+56112+10517452119
9.6M9.60 mi1.60 mi654-109542-80127-1516371092266
10M10.00 mi0.40 mi661-7547-5129-2971752180
10.5M10.50 mi0.50 mi666-5550-31291270996241
12M12.00 mi1.50 mi773-107628-78153-2415661147269
Finish13.11 mi1.11 mi780-7640-12154-113371021247

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 24%
~flat
+5ft-3ft

Overall

1566

Males

1147

M25-29

269

2M→4M

2.0 - 4.0 mi

Top 9%
×4story building
+67ft-69ft

Overall

597

Males

499

M25-29

120

4M→6M

4.0 - 6.0 mi

Top 10%
×9story building
+123ft-9ft

Overall

641

Males

533

M25-29

123

6M→8M

6.0 - 8.0 mi

Top 8%
×12story building
+166ft-53ft

Overall

517

Males

452

M25-29

119

8M→9.6M

8.0 - 9.6 mi

Top 25%
×13story building
+68ft-193ft

Overall

1637

Males

1092

M25-29

266

9.6M→10M

9.6 - 10.0 mi

Top 15%
×2story building
+0ft-24ft

Overall

971

Males

752

M25-29

181

10M→10.5M

10.0 - 10.5 mi

Top 19%
×6story building
+1ft-73ft

Overall

1270

Males

996

M25-29

242

10.5M→12M

10.5 - 12.0 mi

Top 24%
×21story building
+280ft-26ft

Overall

1566

Males

1147

M25-29

269

12M→Finish

12.0 - 13.1 mi

Top 20%
×7story building
+14ft-89ft

Overall

1337

Males

1021

M25-29

247

Passing Analysis

Category:
Athletes Passed
261*
Passed By
358
Net Change
-97
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#683
2M → 4M8421+63#683#620
4M → 6M3431+3#620#617
6M → 8M9826+72#617#545
8M → 9.6M5114-109#545#654
9.6M → 10M916-7#654#661
10M → 10.5M16-5#661#666
10.5M → 12M5112-107#666#773
12M → Finish25*32-7#773#780
TOTALS261*358-97

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

Passing Charts

Category:
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Passing Circle

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Position Flow

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Race Lanes

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Official Timing Data

The San Francisco Marathon

The San Francisco Marathon

Race Place Events

Race Place Events